Tiarella trifoliata var. unifoliata (1985)
SAXIFRAGACEAE
Tiarella trifoliata L. var. unifoliata (Hook.) Kurtz
U.S.A., Idaho, Valley County: Salmon River Mountains: along Lick Creek, ca 20 mi NE of McCall, just S of Forest Road 48.
Elev. 4500 ft.
In rich, mesic Abies grandis forest.
Accession: (unaccessioned)

Tiarella trifoliata var. unifoliata (1986)
SAXIFRAGACEAE
Tiarella trifoliata L. var. unifoliata (Hook.) Kurtz
U.S.A., Washington, Pend Oreille County: Selkirk Range: ca 16 mi ESE of Metaline Falls.
Elev. 3000 ft.
Moist-wet forest floor under Thuja plicata and with Athyrium filix-femina and Gymnocarpium dryopteris.
Accession: (unaccessioned)

Tiarella trifoliata var. unifoliata (1999)
SAXIFRAGACEAE
Tiarella trifoliata L. var. unifoliata (Hook.) Kurtz
U.S.A., Idaho, Adams County: Payette National Forest and Vicinity: Cow Camp Trail (181) from Forest Road 074 to Pollock Creek, ca 14 air mi NNW of New Meadows; ca 18 air mi S of Riggins.
Moist mixed conifer forest; Abies grandis, Picea engelmannii, Pseudotsuga menziesii, Pinus contorta, and Larix occidentalis. Phenology: flowering.
Accession: RM (unaccessioned)

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: South Fork Mill Creek Drainage: Old Dominion Mountain Meadow, ca 9 air mi NE of Colville; off Hanson Springs Road on Forest Road 020.
Elev. 3250 ft.
Wooded access road. Phenology: flowering.
Accession: (unaccessioned)

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Mill Creek Drainage: along Middle Fork of Mill Creek and Bon Ayre Valley on Forest Road 4668, ca 10 air mi NE of Colville.
Old homestead meadows, heavily grazed; creekside and edges of lodgepole pine and cedar/spruce. Phenology: flowering.

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Lenhart Meadows in Little Pend Oreille National Wildlife Refuge, ca 13 air mi SE of Colville along Forest Road 3927.
Carex meadows and creek bottoms and seeps surrounded by Douglas fir forest and grand fir; larch and lodgepole pine; Clintonia and Vaccinium scopulorum; scattered spruce; alders along creek. Phenology: flowering.

U.S.A., Washington, Ferry County: Western Colville National Forest and Vicinity: Kettle Range: east end of Taylor Ridge, ca 8 air mi SW of Orient along Forest Road 6113.
Wet seepy area in spruce/subalpine fir forest; northeast aspect. Phenology: flowering.

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Little Pend Oreille National Wildlife Refuge: ca 15 air mi SE of Colville along Bear Creek.
Small flat areas with seeps; hemlock and cedar. Phenology: flowering & fruiting.

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Mount Rogers, ca 13 air mi NE of Colville; loop trail to summit from Forest Road 620.
Small seeps, springs and lakes; rocky balds and outcrops; mixed forest with subalpine fir, spruce, larch, and cedar. Phenology: flowering.

U.S.A., Washington, Ferry County: Western Colville National Forest and Vicinity: Sherman Peak on Kettle Crest, ca 12 air mi ESE of Republic; Sherman Peak Loop Trail from Wash Hwy 20 at Sherman Pass.
Open slopes with granite outcrops, rocky ridge with talus; small lake with boggy area; mixed forest with subalpine fir, lodgepole pine, and larch. Phenology: flowering.

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: North Fork Mill Creek Drainage: Rabbit Creek Pond along Forest Road 125, ca 16 air mi NE of Colville.
Old beaver pond with open waters; Carex marsh and forest edge with mixed forest; cedar/Clintonia; heavily grazed by cows. Phenology: flowering & fruiting.

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Nork Fork Chewelah Creek Drainage: Hidden Meadows, ca 18 air mi ESE of Colville along Forest Road 270.
Carex meadow; creekside; hemlock/cedar forest. Phenology: flowering & fruiting.

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Chewelah Mountain, ca 7 air mi E of Chewelah, along Tenmile Creek W of ski area road.
Mature cedar/hemlock forest, crossed by old road with conifer saplings and alders. Phenology: flowering & fruiting.

U.S.A., Washington, Ferry County: Western Colville National Forest and Vicinity: Kettle Crest Trail and Old Stage Road, ca 6 air mi N of Sherman Pass; from trailhead on Albion Hill Road.
South aspect sagebrush balds with scattered large Douglas fir; subalpine fir/lodgepole pine forest with large 1 year-old burn areas. Phenology: flowering & fruiting.

U.S.A., Washington, Ferry County: Western Colville National Forest and Vicinity: Kettle Crest: north end of Kettle Crest Trail, ca 9 air mi SE of Curlew.
Rock outcrops with small seeps, south facing open area; mixed forest with mature ponderosa pine/larch; lodgepole pine/subalpine fir at higher elevations. Phenology: flowering & fruiting.

U.S.A., Washington, Pend Oreille County: Western Colville National Forest and Vicinity: Little Pend Oreille Lakes, ca 20 air mi NE of Colville along south shore of Lake Leo, along Wash Hwy 20.
Lakeshore and forest edge; mixed subalpine fir/spruce/lodgepole pine. Phenology: flowering & fruiting.

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Abercrombie Mountain, ca 15 air mi E of Northport along Forest Road 300 from Silver Creek at Leadpoint.
Trailside through cool wet forest (hemlock, cedar, spruce and subalpine fir); open balds and talus with scattered subalpine fir and whitebark pine stumps; lodgepole pine and whitebark pine regeneration. Phenology: flowering & fruiting.

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Columbia River and Tom Bush Creek, ca 2.5 air mi S of Waneta border station on Wash Hwy 251.
Creekside. Phenology: flowering.

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Black Canyon ridgetop, ca 6 air mi ESE of Northport.
Streamside. Phenology: flowering.

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: East Fork Crown Creek, ca 8 air mi NW of Northport.
Mixed woods. Phenology: flowering.

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Trombetta Canyon, ca 2 air mi S of Northport on Fivemile Creek.
Canyon bottom: mixed forest; limestone cliffs and talus. Phenology: flowering.
with Linda Swartz

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Fifteenmile Creek, ca 17 air mi N of Kettle Falls.
Mixed conifer forest and small creek; balds and open ridges. Phenology: flowering & fruiting.

U.S.A., Oregon, Grant County: Umatilla National Forest and Vicinity: Glade Creek and vicinity in North Fork John Day Wilderness Area, ca 1 air mi W of North Fork John Day River.
Mixed conifer forest with Vaccinium, Chimaphila and Linnaea understory; soil fine, deep, ashy, pale; slope 5-10; aspect northeast. Phenology: flowering.
Accession: RM (unaccessioned)

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Smackout Swamp, ca 7 air mi NW of Ione; ca 1 air mi NW of Smackout Pass.
Mixed woods. Phenology: flowering.

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Little Twin Lakes, ca 11 air mi E of Colville.
Old creek bed. Phenology: fruiting.

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Deer Creek, ca 6 air mi SW of Ione.
Riparian zone in cedar-hemlock forest between clearcuts. Phenology: flowering & fruiting.

U.S.A., Washington, Ferry County: Western Colville National Forest and Vicinity: headwaters of Barnaby Creek, ca 6 air mi SE of Sherman Pass along Forest Road 2014.
Old beaver ponds on creek. Phenology: flowering & fruiting.
with Diane Pavek

U.S.A., Washington, Ferry County: Western Colville National Forest and Vicinity: Scalawag Wetland, ca 2.5 air mi SE of Sherman Pass on tributary of South Fork Sherman Creek.
Series of old beaver dams along small creek. Phenology: flowering & fruiting.

U.S.A., Washington, Ferry County: Western Colville National Forest and Vicinity: Davis Lake, ca 11 air mi NW of Kettle Falls.
Mixed forest surrounding lake. Phenology: flowering & fruiting.
with K. Ahlenslager, L. Swartz and J. Nisbet

U.S.A., Washington, Columbia County: Umatilla National Forest and Vicinity: Tucannon River off Forest Road 4712, ca 1 mi from Garfield County.
Douglas fir and grand fir stand, Linnaea dominant in the understory; soil fine, deep, rocky; slope 5-15; aspect southerly and ravine. Phenology: flowering.
Accession: RM (unaccessioned)

U.S.A., Washington, Columbia County: Umatilla National Forest and Vicinity: Tucannon River off Forest Road 4712, ca 1 mi from Garfield County.
Directly below rock face on upper slope; spruce and alder stand on river bank; Tiarella, Chimaphila, Linnaea, Actaea and fern in the understory; soil organic; slope 0-5; aspect southerly and ravine. Phenology: flowering & fruiting.

U.S.A., Washington, Columbia County: Umatilla National Forest and Vicinity: off Forest Road 4620, near Kendall Monument.
Under mixed conifer with Rubus, Linnaea, and Tiarella near roadside in partially shaded area. Phenology: flowering.

U.S.A., Oregon, Umatilla County: Umatilla National Forest and Vicinity: Black Mountain Circle, Forest Road 80 off Forest Road 3128, ca 10 air mi ENE of Emmigrant State Park.
Dry area of mixed conifer woods; soil fine, deep, pale; slope 0-15; aspect east. Phenology: flowering & fruiting.

U.S.A., Oregon, Union County: Umatilla National Forest and Vicinity: High Ridge Lookout, ca 6.5 mi S of Tollgate Work Center.
Woods area; soil fine, deep; slope 0-10; aspect ridgetop. Phenology: flowering.

U.S.A., Oregon, Union County: Umatilla National Forest and Vicinity: Jubilee Lake.
Dry woods with Douglas fir dominant and Vaccinium in the understory; soil fine, deep, ashy, pale; slope 0; aspect none. Phenology: flowering.

U.S.A., Oregon, Umatilla County: [location and coordinates withheld]
Riverbank. Phenology: flowering.

U.S.A., Oregon, Umatilla County: Umatilla National Forest and Vicinity: North Fork Walla Walla River Trail to ca 4 air mi from Forest Road 65, 5 mi E of Milton-Freeewater.
Humid area of grand fir woods; 40 feet above the river; soil fine, deep, brown; slope 0-20; aspect ravine. Phenology: flowering.

U.S.A., Oregon, Umatilla County: Umatilla National Forest and Vicinity: Forest Road 3102 near Rock Spring, ca 5 air mi ESE of U.S. weather station.
Mixed conifer woods; soil fine, deep, brown; slope 0-15. Phenology: flowering.

U.S.A., Oregon, Umatilla County: Umatilla National Forest and Vicinity: Forest roads 31 and 3128, ca 10 mi W of Elgin.
Spruce and grand fir woods with shrubs and forbs; soil fine, deep; slope 0-20; aspect southwest and northeast. Phenology: flowering.

U.S.A., Oregon, Umatilla County: Umatilla National Forest and Vicinity: area adjacent to intersection of Forest roads 3719 and 3718, ca 1 air mi S of intersection of Forest Road 3719 and Ore Hwy 204, ca 1.5 air mi SW of Tollgate.
Coniferous forest dominated by subalpine fir, Engelmann spruce, and grand fir, with understory of Vaccinium membranaceum and Alnus sinuata; soil fine, deep, dark brown; slope 0-5; aspect none. Phenology: flowering.
with Stuart Markow

U.S.A., Washington, Columbia County: Umatilla National Forest and Vicinity: Grizzly Bear Ridge, between Twin Buttes trailhead and Oregon-Washington state line.
Along small creek in spruce and grand fir woods with Alnus and forbs; soil organic; slope 5; aspect ridgetop and southwest. Phenology: flowering.

U.S.A., Oregon, Union County: Umatilla National Forest and Vicinity: near Big Sink & Mottet Creek, ca 15 mi N of Elqin.
Semi-dry woods with mature mixed conifer with understory of graminoids and forbs; soil fine, deep; slope 5; aspect southeast. Phenology: flowering.

U.S.A., Oregon, Union County: Umatilla National Forest and Vicinity: near Fry Meadow Creek off old ATV trail, off Forest Road 6231.
Dry woods; soil fine, deep; slope 0-10; aspect southeast. Phenology: flowering.

U.S.A., Oregon, Wallowa County: Umatilla National Forest and Vicinity: Elk Flats Trail, ca 30 air mi E of Milton-Freewater.
Humid area with mature mixture of spruce and grand fir with Vaccinium amd Tiarella in understory; soil fine, deep; slope 0-20; aspect southeast. Phenology: flowering & fruiting.

U.S.A., Oregon, Wallowa County: Umatilla National Forest and Vicinity: Timothy Spring Trail along South Fork Wenaha River to Milk Creek, ca 24 air mi E of Milton-Freewater.
In mixed conifer woods; soil fine, deep; slope 5-10; aspect northerly. Phenology: flowering & fruiting.

U.S.A., Oregon, Wallowa County: Umatilla National Forest and Vicinity: Timothy Spring Trail along South Fork Wenaha River to Milk Creek, ca 24 air mi E of Milton-Freewater.
In river canyon close to tributaries, very humid, mature mixed conifer overstory of spruce and grand fir; soil fine, deep; slope 5-10; aspect northerly. Phenology: flowering.

U.S.A., Oregon, Umatilla County: Umatilla National Forest and Vicinity: where Forest roads 3130 and 3128 meet, ca 2 air mi ENE of Goodman Lookout.
Mesic moderately old mixed conifer stand interspersed with sunny openings; soil fine, powdery, brown; slope 0-10; aspect ridgetop. Phenology: flowering.

U.S.A., Oregon, Union County: Umatilla National Forest and Vicinity: moving downslope from Forest Road 300, near Alder Lookout.
Open mixed conifer stand; soil fine, deep, brown; slope 0-20; aspect east. Phenology: flowering & fruiting.

U.S.A., Washington, Columbia County: Umatilla National Forest and Vicinity: east side of Chase Mountain from North Fork Touchet River, 0.5-1.5 air mi SW of Middle Point Ridge Trail.
Coniferous forest. Phenology: flowering.
Annotations:
1. Tiarella trifoliata L. var. unifoliata (Hook.) Kurtz
Annotated by Heather Bradtke.
with Heather Bradtke

U.S.A., Washington, Garfield County: Umatilla National Forest and Vicinity: Wenaha-Tucannon Wilderness: on Smooth Ridge Trail near Pistol Spring, ca 35 mi E and 4 mi S of Walla Walla.
Near springs. Phenology: flowering.

U.S.A., Oregon, Grant County: Umatilla National Forest and Vicinity: North Fork John Day Wilderness: from China Meadows to middle of Packsaddle Trail, ca 7 mi N and 5 mi W of Granite.
In Vaccinium scoparium area; slope 0-15; aspect southeast. Phenology: flowering.

U.S.A., Oregon, Grant County: Umatilla National Forest and Vicinity: Desolation Creek, ca 9 mi S and 8 mi E of Dale.
Riparian area, spruce, grand fir dominant in organic to fine, deep, and powdery soil; slope 0-15; aspect none. Phenology: flowering.

U.S.A., Washington, Columbia County: Umatilla National Forest and Vicinity: Tucannon River, to 1.5 mi off road on Tucannon River Trail, ca 3 mi N and 23 mi W of Anatone.
In woods of spruce, Taxus, grand fir with Tiarella and Chimaphila in fine, deep soil; slope 0, aspect none Phenology: flowering & fruiting.

U.S.A., Washington, Garfield County: Umatilla National Forest and Vicinity: Tumalum Creek, ca 3/4 mi W of Rose Springs, ca 3 mi S and 22 mi E of Dayton.
Headwaters of creek, spruce dominated overstory with Linnaea and Tiarella understory. Phenology: flowering.

U.S.A., Idaho, Idaho County: Clearwater Mountains: Nez Perce National Forest: Fish Creek Meadow Campground, ca 5 mi S of Grangeville.
Under Abies grandis with Veratrum viride, Vaccinium membranaceum, Xerophyllum tenax, and Clintonia uniflora. Phenology: flowering & fruiting.
Accession: RM 914197, Barcode: RM0069393

U.S.A., Idaho, Idaho County: Clearwater/Bitterroot Mountains: Clearwater National Forest: along east side of Squaw (Fishing?) Creek and Forest Road 108 opposite junction with Forest Road 5613, ca 3 mi N of U.S. Hwy 12, ca 22 mi SW of Lolo Pass.
Under Thuja plicata and Abies grandis in seepage with Boykinia major, Clintonia uniflora, Cornus canadensis, Adenocaulon bicolor, Adiantum aleuticum, Athyrium filix-femina, and Polystichum munitum. Phenology: flowering & fruiting.
Accession: RM 914211, Barcode: RM0069322

U.S.A., Montana, Missoula County: Clearwater/Bitterroot Mountains: Lolo National Forest: along Lee Creek just W of Forest Road 699, 1 mi S of Lee Creek Campground and U.S. Hwy 12.
T11N R23W S19
Spruce-fir forest with Trillium ovatum, Equisetum arvense, Rubus parviflorus, Coptis occidentalis, Linnaea borealis, and Athyrium filix-femina. Phenology: flowering & fruiting.
Accession: RM 914267, Barcode: RM0069463

U.S.A., Montana, Sanders County: East Fork Bull River: Cabinet Mountains Wilderness boundary.
Silt loam, 3% slope, west-northwest aspect; understory of mature Thuja plicata forest. Phenology: flowering & fruiting.
with Gloria R. B. Mooers
Accession: RM 907029

U.S.A., Montana, Ravalli County: Bitterroot Range: along Lost Horse Creek Road, ca 8 mi NW of Darby.
T4N R22W S12
Mixed conifer forest along creek. Phenology: flowering & fruiting.
Accession: RM 609525

U.S.A., Montana, Missoula County: Butler Creek.
Stream bank under spruce-fir with Tiarella, Mitella, Claytonia. Phenology: flowering.
Accession: RM 621866

U.S.A., Colorado, Lake County: Lolo Creek: Flathead Lake: ca 2 mi E of Yellow Bay.
moist canyon on rocky soil beneath Picea engelmannii. Common. Phenology: flowering.

U.S.A., Montana, Flathead County: Flathead National Forest: near Belton.
Flat ground; larch association. Phenology: fruiting.
Accession: USFS 464267

U.S.A., Montana: Flathead National Forest: Elk Park Ranger Station.
Level slope; shallow loam soil. Fairly plentiful. Phenology: flowering & fruiting.
Accession: USFS 464266

U.S.A., Montana, Ravalli County: Bitterroot National Forest: Kootenai Canyon.
T9N R21W S8
Slope 10%, SE exposure; spruce and fireweed vegetation with Arnica, twinflower, thimbleberry, Disporum, Menziesia; loam, duff topsoil; shaded. Phenology: flowering.
Accession: USFS 464277

U.S.A., Montana, Ravalli County: Bitterroot National Forest: near Kootenai Lakes.
30% slope, SE exposure; sandy loam soil; wet alpine slope with alumroot, stonecrop, sedge, moss. Phenology: flowering.

U.S.A., Montana, Ravalli County: Bitterroot National Forest: near Kootenai Lakes.
20% slope, SE exposure; sandy loam soil; open spruce vegetation with alumroot, saxifrage, moss, fern, Menziesia; alpine wet spots among rock. Patchy. Phenology: flowering.

U.S.A., Montana, Glacier County: Glacier National Park: Trail between Rainbow Falls and the Waterton Lake boat landing.
Along trail in the forest. Phenology: flowering & fruiting.
with Ruth A. Nelson

U.S.A., Montana: Glacier National Park: Lake Josephine toward Mount Gould.
Phenology: flowering.

U.S.A., Montana: Foot of Kootenai Mountains, near Big Fork.
Woods. Phenology: flowering & fruiting.

U.S.A., Montana, Glacier County: Midvale.
Woods. Phenology: flowering & fruiting.

U.S.A., Montana, Lake County: Mission Range: ca 6 mi SE of McDonald Lake.
High cliffs. Phenology: flowering & fruiting.

U.S.A., Montana, Flathead County: Belton.
Phenology: flowering & fruiting.

U.S.A., Montana, no county County: Glacier National Park.
Phenology: flowering.

U.S.A., Montana, Missoula County: Miller Canyon: ca 12 mi from mouth, near Miller Creek.
Deep shade, moist creek bank. Phenology: flowering.

U.S.A., Montana, Flathead County: Glacier National Park: Johns Lake, ca 1 mi NE of McDonald Lake.
Moist, shaded bank under hemlocks. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Trail from Big Sand Creek to Elk Summit.
T35N R15E S33
Phenology: fruiting.
with J. W. Severy

U.S.A., Montana, Glacier County: Glacier National Park: trail to Grinnell Glacier.
Woods. Phenology: flowering & fruiting.
with Ruth A. Nelson

U.S.A., Montana, Missoula County: Swan Range: overlooking Holland Creek, ca 80 mi NE of Missoula.
Moist, mossy places and leaf-mould in deep shade of conifers. Phenology: flowering.
Arthur Cronquist, 7899. 7/9/1955.

U.S.A., Idaho, Lemhi County: Northern Salmon River Mountains: valley bottom of upper West Horse Creek, 23.9 air mi WNW of Shoup.
T25N R14E S21
25-75 individuals estimated in mesic soil within spruce vegetation, 11 degree slope, WSW aspect, granodiorite geology. Phenology: flowering & fruiting.

U.S.A, Idaho, Lemhi County: Salmon National Forest: Northern Salmon River Mountains: confluence of Broomtail and Little Horse creeks, 14.6 air mi WNW of Shoup.
T24N R16E S11
75-150 plants estimated in mesic soil within a spruce vegetation, 9 degree slope, WNW aspect, gneiss geology. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Clearwater National Forest: Lochsa River Drainage: Eagle Mountain Pack Bridge Trail Head: ca 1 mi on Pack Trail 206, ca 45 air mi ENE of Kooskia.
Streamside in mixed coniferous forest including Thuja plicata. Phenology: flowering.
Annotations:
1. Tiarella trifoliata L. var. unifoliata (Hook.) Kurtz.

U.S.A., Idaho, Idaho County: Clearwater National Forest: Lochsa River Drainage: Wilderness Gateway Trail Head: ca 0.5 mi on Pack Trail 220, ca 34 air mi ENE of Kooskia.
Streamside in mixed coniferous forest including Thuja plicata. Phenology: flowering.
Annotations:
1. Tiarella trifoliata L. var. unifoliata (Hook.) Kurtz.

U.S.A., Idaho, Idaho County: Clearwater National Forest: Selway-Bitterroot Wilderness: Lochsa River Drainage: Wilderness Gateway Trail Head: ca 4 mi on Pack Trail 220 to wilderness boundary, ca 26 air mi SE of Pierce.
Thuja plicata dominated forest. Phenology: flowering.
1. Tiarella trifoliata L. var. unifoliata (Hook.) Kurtz.

U.S.A., Idaho, Idaho County: Clearwater National Forest: Lochsa River Drainage: Wilderness Gateway Campgrounds, ca 2 mi on Forest Road 198, ca 34.5 air mi of NE of Kooskia.
Old roadbed, mixed coniferous forest. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway River Drainage: Slims Campground/Trail Head: Meadow Creek National Recreation Trail, ca 32 air mi ESE of Kooskia.
Mixed coniferous forest including Thuja pliacta, streamside. Phenology: flowering.

U.S.A., Idaho, Idaho County: Clearwater National Forest: Selway-Bitterroot Wilderness: Lochsa River Drainage: Warm Springs Pack Bridge Trail Head: ca 5 mi on Pack Trail 49, near Wag Creek, ca 35 air mi WSE of Hamilton, MT.
Old burnt meadow, understory dominated by Xerophyllum tenax. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway River Drainage: O'Hara Road following O'Hara Creek, ca 3 mi on Forest Road 651, ca 23 air mi ESE of Kooskia.
Wet streamside along road. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Bitterrroot Mountains: Bear Creek Pass Trail Head: betwenn ca 2 and 3 mi on Forest Trail 613, between Upper Bear Lake and Lower Bear Lake, ca 18 air mi NE of Darby, MT.
Subalpine, mixed conifers, Xerophyllum tenax and Vaccinium understory. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Elk Summit Trail Head: Cedar Creek, ca 5 mi on Pack Trail 939, ca 27 air mi WNW of Hamilton, MT.
Streamside, mixed coniferous forest, Thuja plicata dominate. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Elk Summit Trail Head: Cedar Creek, ca 4 mi on Pack Trail 939, ca 26 air mi WNW of Hamilton, MT.
Streamside; mixed coniferous forest. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Bitterroot Mountains: Wahoo Creek, ca 3.5 mi on Pack Trail 430 from Twin Lakes Trail Head, 19 air mi SSW of Hamilton, MT.
Mixed coniferous forest. Phenology: flowering & fruiting.

U.S.A., Montana, Ravalli County: Bitterroot National Forest: Bailey Lake, ca 3/4 mi on Pack Trail 293 from Lost Horse Trail Head off Forest Road 429, ca 18 air mi WNW of Darby, MT.
Subalpine, creeks and seeps running through Salix dominated subalpine hillside. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Middle Fork Clearwater Wild and Scenic River: Selway River Drainage: Boyd Creek Campground, ca 12 mi on Forest Road 223, ca 26 air mi E of Kooskia.
Streamside, mixed conifers, Thuja plicata. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Middle Fork Clearwater Wild and Scenic River: Forest Road 443, mile marker 27, ca 1 mi from Selway Falls, ca 33 air mi ESE of Kooskia.
Roadside with water drainage; mixed conifer forest. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway River Drainage: O'Hara Road following O'Hara Creek, ca 3 mi on Forest Road 651, ca 23 air mi ESE of Kooskia.
Roadside seep. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Clearwater National Forest: Selway-Bitterroot Wilderness: Elk Summit Trail Head: ca 4 mi on Pack Trail 486 from Elk Summit, after intersection with Pack Trail 939, ca 26 air mi WNW of Hamilton, MT.
Mixed coniferous forest, grand fir. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Elk Summit Trail Head: ca 5 mi on Pack Trail 486 from Elk Summit, after intersection with Pack Trail 939, ca 26 air mi W of Hamilton, MT.
Fern dominated seep. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Clearwater National Forest: ca 2 mi on Pack Trail 18 leaving Elk Summit toward Diablo Mountain Lookout, ca 22 air mi WNW of Hamilton, MT.
One year after fire, patches that survived. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Bear Creek Pass Trail Head: ca 0-1 mi along Pack Trail 516 , ca 18 mi WNW of Darby, MT.
Subalpine streamside. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Twin Lakes Trail Head: ca 5 mi on Trail 421 along East Fork Moose Creek ca 3/4 mi above Moose Lake, ca 17 air mi WSW of Hamilton, MT.
Streamside seeps, Thuja plicata dominated. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Bear Creek Pass Trail Head: ca 4 mi along Pack Trail 516 along Bear Creek , ca 18 mi WNW of Darby, MT.
Wooded area by creek; mixed conifers including Thuja plicata. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Bear Creek Pass Trail Head: ca 3 mi on Pack Trail 559 toward Spruce Lake, ca 16 air mi WNW of Darby, MT.
Subalpine, streamside. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway River Drainage: Forest Road 470/286 to Kooskia, ca 20 air mi ESE of Kooskia.
Seep. Phenology: flowering.

U.S.A., Idaho, Idaho County: Clearwater National Forest: Lochsa River Drainage: Eagle Mountain Trail Head: along Lochsa River.
Riverside. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Clearwater Mountains: Middle Fork Clearwater Wild and Scenic River: Forest Road 223 along Selway River, Rackliff Campground, ca 24 air mi ESE of Kooskia.
Campground and streamside. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Middle Fork Clearwater Wild and Scenic River: Selway River Drainage: Forest Road 223 along Selway River, 0.5 mi on Glover Trail near camp ground.
Dry hillside. Phenology: fruiting.

U.S.A., Idaho, Idaho County: Clearwater National Forest: Lochsa River Drainage: Mocus Point Trail Head: along Lochsa River.
Marsh. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Clearwater National Forest: Selway-Bitterroot Wilderness: Lochsa River Drainage: Wilderness Gateway Trail Head: ca 4 mi on Pack Trail 211, 0.5 mi from Stanley Hot Springs, ca 37 air mi ENE of Kooskia.
Thuja plicata dominated forest. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Clearwater National Forest: Lochsa River Drainage: Mocus Point Pack Bridge: ca 1 mi on Forest Trail 469, approaching Mocus Point from Lochsa River, ca 50 air mi ENE of Kamiah.
Mixed coniferous forest including Pseudotsuga menziesii and Abies grandis. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Middle Fork Clearwater Wild and Scenic River: Selway River Drainage: CCC Camp: ca 2 mi on CCC Trail, Forest Trail 734, ca 26 air mi SE of Kamiah.
Mixed coniferous forest. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway River Drainage: O'Hara Campground: ca 1 mi on O'Hara Trail, ca 26.5 air mi SE of Kamiah.
Thuja plicata grove. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway River Drainage: Forest Road 470, ca 8 air mi from Selway River, ca 15 air mi E of Stites.
Roadside, mixed conifer. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Moose Ridge, Forest Trail 562, near Tony Creek S of Moose Creek Ranger Station, approaching ridgeline.
Approaching ridegline, trees burned, understory including beargrass. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Middle Fork Clearwater Wild and Scenic River: confluence of Moose Creek and Selway River: ca 3 mi on Shissler Lookout Trail, Forest Trail 693, ca 53 air mi E of Kamiah.
Stream crossing in a mixed conifers forest, grand fir, ponderosa pine, Douglas fir; hillside. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: along Moose Creek upstream from confluence with Selway River and North and East Fork Moose Creek, Forest Trail 421, ca 55 air mi E of Kamiah.
Previously burned; old grand fir stand. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Moose Creek Ranger Station: ca 1 mi on Forest Trail 430 to Freeman Peak, ca 54-55 air mi ESE of Kamiah.
Mixed coniferous forest. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Moose Creek Ranger Station: ca 1 mi on Forest Trail 430 to Freeman Peak, ca 54-55 air mi ESE of Kamiah.
Mixed coniferous forest, ridgeline. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Shearer Guard Station: Ditch Creek, ca 2 mi on Forest Trail 527, ca 29.5 air mi ENE of Elk City.
Streamside in mixed coniferous forest. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway River Drainage: Meadow Creek, Selway River Campground, ca 1/4 mi on Forest Road 443 from Selway River, ca 33 air mi ESE of Stites.
Western red cedar grove. Phenology: flowering.

U.S.A., Idaho, Idaho County: Clearwater National Forest: Kooskia Meadows, ca 25 air mi W of Kooskia.
Wet meadow. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterrroot Wilderness: Bear Creek Pass: ca 7 mi on Forest Trail 516, after Granite Creek, ca 24.5 air mi WNW of Darby, MT.
Western red cedar grove. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterrroot Wilderness: Bear Creek Pass: ca 6 mi on Forest Trail 516, between switchbacks and Granite Creek, ca 21 air mi WNW of Darby, MT.
Edge of western red cedar grove. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Nez Perce Trail Road, Forest Road 438, ca 18.5 air mi SW of Elk City.
Mixed coniferous forest, lodgepole pine, subalpine fir, spruce, Douglas fir. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway River Drainage: Limber Luke, Forest Road 464, ca 13.5 air mi ENE of Kooskia.
Mixed coniferous forest. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Clearwater River Drainage: Forest Road 418, ca 13. 5 air mi ENE of Kooskia.
Mixed coniferous forest including western red cedar. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Middle Fork Clearwater Wild and Scenic River: Selway River Drainage: ca 20 mi on Forest Road 223, ca 1/4 mi on Gedney Creek Trail, Forest Trail 708, ca 17 air mi NNE of Elk City.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Middle Fork Clearwater Wild and Scenic River: Selway River Drainage: ca 5 mi on Forest Road 223, behind the bunk houses, Fenn Ranger Station, ca 19 mi NNW of Elk City.
Mixed coniferous forest including western red cedar. Phenology: flowering.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: ca 0.5 air mi W of O'Hara Creek on Forest Road 651, ca 3.5 air mi S of Fenn Ranger Station; ca 22.5 air mi ESE of Kooskia.
Roadside.
1. Tiarella trifoliata L. var. unifoliata (Hook.) Kurtz
Annotated by Georgia G. Thomas.
with Jack Hartman

U.S.A., Idaho, Idaho County: Nez Perce National Forest: at the forest boundary on Forest Road 470 above the Selway River, ca 1.5 air mi S of Lowell; ca 19 air mi E of Kooskia.
Roadside through conifers.
1. Tiarella trifoliata L. var. unifoliata (Hook.) Kurtz
Annotated by Georgia G. Thomas.
with Georgia G. Thomas

U.S.A., Idaho, Idaho County: Clearwater National Forest: Middle Fork Clearwater Wild and Scenic River System: from Moscas Point Pack Bridge on Lochsa River ca 1 3/4 trail mi S on Forest Trail 469, ca 51 air mi ENE of Kamiah.
Mixed coniferous forest.
Annotated by Georgia G. Thomas.
with Georgia G. Thomas

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway River Drainage: ca 3 mi on Forest Road 470, Swiftwater Road, ca 19 air mi E of Kooskia.
Mixed conifer forest, roadside. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Elk Summit Trail Head: ridge above Cedar Creek, ca 4 mi on Pack Trail 939, ca 26 air mi WNW of Hamilton, MT.
Mixed coniferous, grand fir, Douglas fir, Engelmann spruce, hillside with some gaps of sun. Phenology: flowering & fruiting.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: North Fork Clearwater River, Black Canyon Forest Trail 445 toward Elizabeth Mountain, ca 34 air mi NE of Pierce.
Southeasterly-facing slopes characterized by an overstory rich in Thuja plicata and Abies grandis, with infrequent occurrences of Tsuga mertensiana. Phenology: flowering.
with B. E. Nelson

U.S.A., Idaho, Clearwater County: Clearwater Mountains: June Creek S of Forest Road 246, ca 1 air mi NW of Eagle Point and ca 27.5 mi NNE of Pierce.
Of northerly aspect, creek abundant with Thuja plicata of substantial size and occasional old growth Abies grandis with dbh of ca 5'; understory varied from largely depauperate with light gaps rich in Vaccinium membranaceum, to moisture-laden stands of Adiantum aleuticum and Oplopanax horridum. Phenology: flowering.
with B. E. Nelson

U.S.A., Idaho, Clearwater County: Upper Basin: Giant Red Cedar National Recreation Trail 748: headwaters of Elk Creek, ca 12.5 air mi ENE of Bovill and ca 3 air mi N of Elk Butte.
Exceptional old-growth climax community of Thuja plicata, characterized by Thuja plicata/Athyrium filix-femina habitat type of northerly aspect. Phenology: flowering.
with Joshua Miller

U.S.A., Idaho, Clearwater County: Clearwater Mountains: Aquarius Research Natural Area: Isabella Landing Trail 297 and vicinity adjacent to confluence of Isabella Creek and North Fork Clearwater River.
Mature and productive western red cedar forest upon riparian terrace, characterized by Thuja plicata/Athyrium filix-femina habitat type. Phenology: flowering & fruiting.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: Lost Hat Saddle: S of Orofino Creek and N of Dan Lee Ridge, ca 4 air mi WNW of Hemlock Butte and ca 5 air mi SE of Pierce.
Mixed seral coniferous forest dominated by Thuja plicata with a significant understory shrub-component occupied by Vaccinium membranaceum in areas of light gaps and Taxus brevifolia in dense shade. Phenology: flowering.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: within late successional reserve stand nearby Forest Road 5201, ca 3 air mi ENE of French Mountain and ca 7 air mi NE of Pierce.
Climax community of old-growth Thuja plicata paired with an understory densely blanketed by Athyrium filix-femina, Dryopteris expansa and Viola glabella. Along mid-slope to shoulder-slope and within creek-dwelling draws. Phenology: flowering.

U.S.A., Idaho, Latah County: Hoodoo Mountains: southern slope of range in Mountain Gulch drainage, from shoulder-slope to mid-slope along draw, ca 3 air mi E of Bald Mountain and 20 air mi NE of Potlatch.
Mixed coniferous forest dominated by sizeable seral (i.e., Larix occidentalis) and late-seral (i.e., Abies grandis) communities on shoulder slope, and Thuja plicata in moist draw. Phenology: flowering.

U.S.A., Idaho, Idaho County: Clearwater Mountains: S of Lochsa River in vicinity of Eagle Mountain Trail Head 206, ca 21 air mi SW of Powell and ca 4 air mi WNW of Flytrap Butte.
Riparian bench and toe slope inhabited by mixed coniferous forest dominated by Thuja plicata. Phenology: flowering.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: Isabella Creek drainage: Trail 95 along Isabella Creek and Trail 96 along Elmer Creek, ca 25 air mi NNE of Cardiff Spur and ca 2-4 air mi NW of Black Mountain.
Most areas within collection extent were dramatically reshaped by recent fire in the last ten years; fire-scarred towering Thuja plicata snags a testament to the former climax community. Disturbed areas with prolific stands of Chamerion angustifolium and, when moisture allows, Illiamna rivularis abounds. Phenology: flowering.
with Joshua Miller

U.S.A., Idaho, Clearwater County: Mallard Larkins Pioneer Area: north slope of Smith Ridge, along Forest Trail 240, ca 5-6 air mi NW of Black Mountain.
Mature, regal community of mountain hemlock characterized predominately by Tsuga mertensiana/Menziesia ferruginea habitat type. Phenology: flowering.
with Joshua Miller

U.S.A., Idaho, Clearwater County: Clearwater Mountains: Junction Creek Forest Trail 191 along Kelly Creek, ca 1.5 mi E of Kelly Forks and ca 2 1/4 air mi NE of Junction Mountain.
Along riparian and northerly-facing toeslope of creek in mixed coniferous forest. Phenology: flowering & fruiting.

U.S.A., Idaho, Clearwater County: Bitterroot Mountains: North Fork Clearwater River: North Fork Headwater Trail 373, spanning ca 6-9 air mi W of Montana. Collection extent includes from Trail Head to confluence of Meadow Creek, ca 3.5-4 mi.
Predominately southwesterly-facing slopes and draws with heterogeneous communities of Abies lasiocarpa, Picea engelmannii, Pinus contorta, Pseudotsuga menziesii and, to a lesser degree, Thuja plicata. Phenology: fruiting.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: Mush Saddle and Pot Mountain Ridge, along Forest Trail 169 via Forest Road 711, ca 3-4 air mi SW of Cold Springs Peak.
Mixed coniferous forest dominated by Tsuga mertensiana with common occurrences of Picea engelmannii and Abies lasiocarpa; community typified by Tsuga mertensiana/Clintonia uniflora habitat type. Phenology: flowering.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: Cayuse Creek, nearby Cayuse landing strip, along Forest Trail 534, ca 3.5 air mi SE of Scurvy Mountain.
Mesic-moist riparian bench with abundant Thuja plicata. Phenology: flowering.

U.S.A., Idaho, Latah County: Palouse Range: along Gold Creek between Forest Road 770 and Forest Road 4766, ca 6 air mi NE of Potlatch.
Stream bottom in disturbed Tsuga/Thuja forest. Phenology: flowering.
with Crista L O'Conner

U.S.A., Idaho, Latah County: Palouse Range: along Slate Creek at Forest Road 1433, ca 1 air mi WSW of Baby Grand Mountain, ca 18.5 air mi ENE of Potlatch.
Stream bottom and adjacent slopes in a mixed conifer forest. Phenology: flowering.
with Crista L O'Conner

U.S.A., Idaho, Clearwater County: Palouse Range: along Bull Run Creek, just S of Bull Run Creek Falls, ca 18 air mi ESE of Deary
Stream bottom and adjacent western red cedar forest. Phenology: flowering.
with Crista L O'Conner

U.S.A., Idaho, Clearwater County: Palouse Range: just S of Oviatt Creek on Forest Road 1447, ca 13 air mi E of Deary.
Edge of brushy mixed conifer forest-Sphagnum bog. Phenology: flowering.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: Aquarius Campground along the North Fork Clearwater River, ca 25 air mi NNE of Pierce.
Riparian Thuja forest. Phenology: flowering.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: slope and bench above Isabella Creek and Forest Road 700, just S of Dog Creek, ca 27 air mi NNE of Pierce.
Thuja forest with occasional Tsuga mertensiana. Phenology: flowering.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: along North Fork Clearwater River and Forest Road 250 in Black Canyon, at Elizabeth Mountain Trailhead, ca 33 air mi NE of Pierce.
Riparian Thuja forest. Phenology: flowering.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: Johnson Gulch, near confluence of French Creek on Forest Road 250, ca 7.5 air mi NE of Pierce.
Spruce-fir forest at the edge of a Labrador tea-Sphagnum bog. Phenology: flowering.

U.S.A., Idaho, Idaho County: Clearwater Mountains: Canyon Creek Trail 107, ca 5 1/4 mi NNE of Lowell.
Moist stream terrace characterized by Thuja plicata/Athyrium filix-femina habitat type, with high coverage of mature, relatively large Taxus brevifolia. Phenology: flowering.

U.S.A., Idaho, Latah County: Clearwater Mountains: Potlatch River drainage at Feather Creek Trail 767, ca 3/4 - 1 air mi E of Abes Knob.
Along riparian of creek and decommissioned road upon east bank. Canopy dominated by late successional Thuja plicata. Phenology: flowering.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: Weitas Creek, along and in vicinity of Trail 20, ca 3/4 air mi SE of Weitas Guard Station.
Gently sloped riparian bench of northerly aspect with regal, late successional Thuja plicata and co-dominant mature Abies grandis; community characterized by Thuja plicata/Adiantum aleuticum habitat type. Lobaria pulmonaria prolific upon bank, canopy, and strewn about forest floor. Phenology: flowering.

U.S.A., Idaho, Idaho County: Bitterroot Mountains: Colt Killed Creek and Trail 50, ca 4 air mi E of Powell Ranger Station.
Riparian terrace typified by Thuja plicata/Athyrium filix-femina habitat type. Phenology: flowering.

U.S.A., Idaho, Idaho County: Bitterroot Mountains: Colt Creek drainage, in vicinity of Forest Trail 79, ca 4.5 air mi SE of Powell Ranger Station.
Seep of southerly aspect in spruce-fir forest with common occurrences of Menziesia ferruginea and Alnus sinuata in moist microsites. Phenology: flowering & fruiting.

U.S.A., Idaho, Idaho County: Clearwater Mountains: Mocus Point Trail 469, ca 17 3/4 air mi NE of Lochsa Historical Ranger Station.
Northwesterly-facing draw of unnamed creek typified by Thuja plicata/Clintonia uniflora habitat type. Phenology: flowering & fruiting.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: along Forest Road 246 at June Creek crossing, ca 1 air mi NW of Eagle Point, ca 27.5 air mi NNE of Pierce.
Brushy ditch and roadside banks in mixed conifer forest and rocky banks. Phenology: flowering.