Polystichum munitum (1985)
DRYOPTERIDACEAE
Polystichum munitum (Kaulf.) C. Presl
U.S.A., Idaho, Idaho County: Clearwater Mountains: Just W of Rainy Day Creek and S of South Fork Clearwater River, ca 32 mi W of Grangeville.
Elev. 3200 ft.
In rich, mesic ravine under Abies grandis and Pseudotsuga menziesii.
Accession: (unaccessioned)

Polystichum munitum (2001)
DRYOPTERIDACEAE
Polystichum munitum (Kaulf.) C. Presl
U.S.A., Oregon, Umatilla County: Umatilla National Forest and Vicinity: 3 air mi S of Corporation Guard Station on South Fork Umatilla River Trail.
On moist rocky slope above spring, roots secured in rock crevices; soil heavy, dark brown, between rock crevices; slope 10-20; aspect ravine. Phenology: spores.
Accession: RM (unaccessioned)

Polystichum munitum (2001)
DRYOPTERIDACEAE
Polystichum munitum (Kaulf.) C. Presl
U.S.A., Oregon, Umatilla County: Umatilla National Forest and Vicinity: Camp Creek Trail, near Meacham Creek.
Trail under mixed conifer forest transitioning into grand fir forest with Lactuca serriola, Polystichum, Pteridium, Galium, Claytonia and grasses; area heavily grazed; soil deep, brown; slope 5-10; aspect westerly. Phenology: spores.
with Stuart Markow
Accession: RM (unaccessioned)

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: spores.
Accession: (unaccessioned)

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Little Roundtop Mountain: Middle Fork Mill Creek, ca 8 air mi NE of Colville along Irish Mountain Road from Aladdin Route.
East face of mountain with scattered large ponderosa pine and Douglas fir regeneration near top; ninebark and ocean spray; mixed forest, hemlock/cedar at base. Phenology: spores.
Accession: (unaccessioned)

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Little Pend Oreille Wildlife Refuge: Blacktail Mountain, ca 15 air mi ESE of Colville.
Mixed forest and bald outcrops with scattered granite boulders on southern exposure. Phenology: vegetative only.

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Black Canyon ridgetop, ca 6 air mi ESE of Northport.
Elev. 4000 ft.
Streamside. Phenology: spores.

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: vegetative only.

U.S.A., Washington, Stevens County: Western Colville National Forest and Vicinity: Deer Creek, ca 6 air mi SW of Ione.
Elev. 3600 ft.
Riparian zone in cedar-hemlock forest between clearcuts. Phenology: spores.

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: spores.
Accession: RM (unaccessioned)

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: vegetative only.

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

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: spores.

U.S.A., Oregon, Wallowa County: Umatilla National Forest and Vicinity: Elk Flats Trail, ca 30 air mi E of Milton-Freewater.
Dry mature mixed conifer woods; soil fine, deep; slope 0-20; aspect southeast. Phenology: spores.

U.S.A., Oregon, Union County: Umatilla National Forest and Vicinity: Bald Mountain W of and overlooking Looking Glass Creek, ca 2.5 air mi E of Tollgate.
Ridgetop dominated by forbs, with scattered shrubs and conifers; soil generally shallow to rock outcrops; slope 5-10; aspect southerly. Phenology: spores.
with Stuart Markow

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: spores.
Annotations:
1. Polystichum munitum (Kaulf.) C. Presl
Annotated by Heather Bradtke.
with Heather Bradtke

U.S.A., Oregon, Wallowa County: Umatilla National Forest and Vicinity: Wenaha Tucannon Willderness: along Hoodoo Trail above the Wenaha River, ca 35 mi E and 7 mi S of Walla Walla.
Copper slopes under ponderosa pine and Douglas fir; slope 20; aspect north. Phenology: vegetative only.

U.S.A., Oregon, Umatilla County: Umatilla National Forest and Vicinity: North Fork Umatilla Wilderness: Nine Mile Ridge, ca 7 mi S and 15-17 mi E of Athena.
Mixed conifer woodland with flowering shrubs, ferns, and herbs in fine and deep soil; slope 20; aspect west. Phenology: spores.

U.S.A., Oregon, Morrow County: Umatilla National Forest and Vicinity: Copple Butte Trail, ca 20 mi N of Monument.
Larix and Douglas fir dominate overstory (Douglas fir dying off) with Vaccinium scoparium, Shepherdia and Paxistima in fine, deep soil; slope 15; aspect northwest. Phenology: spores.

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: spores.

U.S.A., Washington, Columbia County: Umatilla National Forest and Vicinity: Wenaha-Tucannon Wilderness: Twin Spring area on Smooth Ridge Trail, ca 32 mi E and 2 mi S of Walla Walla.
Under spruce and grand fir and in spring. Phenology: spores.

U.S.A., Montana, Lincoln County: Ross Creek.
Cedar associated with Athyrium filix-femina. Rare. Phenology: spores.
Annotations:
2. Polystichum munitum (Kaulf.) C. Presl
Annotated by D. H. Wagner in 1976.
Accession: RM 288671

U.S.A., Montana, Lincoln County: Cabinet Mountains: Flower Creek Trail, ca 1/4 mi outside Wilderness area.
Under cedar-hemlock with Clintonia, Gymnocarpium, Acer. Rare. Phenology: spores.
Annotations:
2. Polystichum munitum (Kaulf.) C. Presl
Annotated by D. H. Wagner in 1976.
Accession: RM 290876

U.S.A., Idaho, Idaho County: Clearwater Mountains: Nez Perce National Forest: Castle Creek Campground along the South Fork Clearwater River, ca 15 mi SE of Grangeville.
Under Abies grandis along the river with Asarum caudatum, Rubus parviflorus, Disporum trachycarpum, Acer glabrum, and Cornus sericea. Phenology: spores.
Accession: RM 914186, Barcode: RM0069404

U.S.A., Idaho, Idaho County: Clearwater Mountains: Clearwater National Forest: Wild Goose Campground between the Middle Fork Clearwater River and U.S. Hwy 12, ca 16 mi E of Kooskia.
Under Thuja plicata and Abies grandis with Coptis occidentalis, Adenocaulon bicolor, and Disporum trachycarpum. Phenology: spores.
Accession: RM 914201, Barcode: RM0069375

U.S.A., Idaho, Idaho County: Clearwater Mountains: along Deadman Creek ca 1/4 mi N of U.S. Hwy 12 and the Lochsa River, ca 23 mi NE of Kooskia.
Under Thuja plicata and Abies grandis with Pteridium aquilinum, Actaea rubra, Adenocaulon bicolor, Athyrium filix-femina, and Boykinia major. Phenology: spores.
Accession: RM 914203, Barcode: RM0069377

U.S.A., Idaho, Shoshone County: Clearwater/Bitterroot Mountains: St. Joe National Forest: Hobo Cedar Grove Botanical Area: 11 mi NE of Clarkia.
T43N R3E S8
Under Thuja plicata with Clintonia uniflora, Tiarella unifoliata, Athyrium filix-femina, Asarum caudatum, Coptis occidentalis, and Trillium ovatum. Phenology: spores.

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.
1. Polystichum munitum (Kaulf.) C. Presl.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Selway River Drainage: ca 4 mi on Forest Trail 708, 100 ft up from Gedney Creek, ca 33 air mi E of Kooskia.
Steep bank of stream, mixed conifers, mixed shrubs, Thuja plicata, Douglas fir, ponderosa pine.
1. Polystichum munitum (Kaulf.) C. Presl.

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.
1. Polystichum munitum (Kaulf.) C. Presl.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Middle Fork Clearwater Wild and Scenic River: Selway River Drainage: CCC Camp Trail Head: ca 0.5 mi on Forest Trail 734, ca 22 air mi ESE of Kooskia.
Thuja plicata dominated mixed conifer forest.

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.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Middle Fork Clearwater Wild and Scenic River: Selway River Drainage: Race Creek Trail Head: ca 3/4 mi on Forest Trail 4 along Selway River, ca 20 mi on Forest Road 223, ca 34 air mi ESE of Kooskia.
Mixed conifer forest, Thuja plicata, grand fir, Douglas fir, ponderosa pine.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Middle Fork Clearwater Wild and Scenic River: Forest Road 443, ca 1.5 mi from Selway Falls.
Mixed conifer forest, ponderosa pine, Douglas fir, grand fir, spruce.

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.

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.
Eroded hillside.

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.

U.S.A., Idaho, Idaho County: Clearwater National Forest: Forest Road 5503 near Syringa, ca 12 air mi E of Kooskia.
Roadside seep.

U.S.A., Idaho, Idaho County: Clearwater National Forest: Lochsa River Drainage: across Split Creek Pack Bridge: ca 0.5 mi on Forest Trail 133 along the Lochsa River, ca 28 air mi ENE of Kooskia.
Riverside.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway River Drainage: Forest Road 317, Coolwater Road, ca 21 air mi E of Kooskia.
Roadside.

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

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.

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.

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

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway River Drainage: Forest Road 286 ca 1 mi from intersection of Forest Road 470 and Forest Road 286, ca 15 air mi E of Stites.
Open logged hillside.

U.S.A., Idaho, Idaho County: Bitterroot National Forest: Middle Flork Clearwater Wild and Scenic River: Paradise Guard Station: ca 2 mi on Forest Trail 4 along Selway River, ca 30 air mi WSW of Darby, MT.
Riverside grove of mixed conifers dominated by Thuja plicata.

U.S.A., Idaho, Idaho County: Bitterroot National Forest: Selway-Bitterroot Wilderness: Paradise Guard Station: ca 2 mi on Forest Trail 24 along White Cap Creek, ca 27 air mi WSW of Darby, MT.
Sunny steep hillside above river dominated by an open Pinus ponderosa forest.

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.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway River Drainage: Meadow Creek National Recreation Trail, between Reverse Creek and Pell Creek, ca 40 air mi SE of Kamiah.
Rocky, open, Pinus ponderosa dominated streamside slope; other conifers present; signs of approximatly 4 year old fire.

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.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Middle Fork Clearwater Wild and Scenic River: Moose Ridege, Forest Trail 562, near Tony Creek S of Moose Creek Ranger Station, ca 53 air mi ESE of Kamiah.
Dry slopes, mixed ponderosa pine, grand fir and Douglas fir.

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 1 mi on Shissler Lookout Trail, Forest Trail 693, ca 53 air mi E of Kamiah.
Drier hillside, mixed conifers, grand fir, ponderosa pine, Douglas fir; hillside.

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.

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.

U.S.A., Idaho, Idaho County: Bitterroot National Forest: Selway-Bitterroot Wilderness: Bad Luck Creek, ca 1 mi on Forest Trail 447, ca 29 air mi WSW of Darby, MT .
Streamside in mixed coniferous forest.

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.
Annotated by Ronald L. Hartman in 2017.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Shearer Guard Station: ca 1 mi on Forest Trail 520, ca 31.5 air mi ENE of Elk City.
Ponderosa pine dominated hillside.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway-Bitterroot Wilderness: Shearer Guard Station: E of Eagle Rock, ca 3 mi on Forest Trail 520, ca 32.5 air mi ENE of Elk City.
North slope, mixed fir.

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.

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.

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.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Selway River Drainage: Forest Road 464, ca 15 air mi ENE of Kooskia.
Logged area.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Clearwater River Drainage: Forest Road 445 near Polar Creek, ca 18 air mi ENE of Kooskia.
Roadside in a mixed coniferous forest.

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.

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.
Mixed coniferous forest.

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.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Middle Fork Clearwater Wild and Scenic River: Selway River Drainage: Rackliff Trail Head, ca 0.5 mi on Forest Trail 702, ca 9 mi on Forest Road 223 from Lochsa River, ca 18 air mi NNW of Elk City.

U.S.A., Idaho, Idaho County: Clearwater National Forest: Lochsa River Drainage: ca 1 mi on Pete King Road, Forest Road 5515, ca 18.5 air mi E of Kooskia.
Abandoned fruit tree grove, mixed conifers, fairly dry open slopes, roadside.

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Middle Fork Clearwater Wild and Scenic River: Race Creek ca 1.5 mi up the Selway River from Selway Falls, ca 19 air mi ESE of Lowell.
Phenology: spores.
Annotated by Georgia G. Thomas.
with Jack Hartman

U.S.A., Idaho, Idaho County: Clearwater National Forest: along Middle Fork Clearwater River on U.S. Hwy 12, ca 3 road mi SW of Syringa; ca 10 air mi E of Kooskia.
Roadside.
Annotated by Georgia G. Thomas.
with Jack Hartman

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.
Annotated by Georgia G. Thomas.
with Jack Hartman

U.S.A., Idaho, Idaho County: Clearwater National Forest: Selway Bitterroot Wilderness: along Split Creek Trail on Split Creek Ridge, ca 30 air mi E of Kamiah.
South exposed ridge on sparsely covered hillsides in shrubs.
with Georgia G. Thomas

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.
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.
with Georgia G. Thomas

U.S.A., Idaho, Idaho County: Nez Perce National Forest: Middle Fork Clearwater Wild and Scenic River: Moose Creek Ranger Station: ca 0.5 mi upstream along Selway River, Forest Trail 4, ca 54 air mi ESE of Kamiah.
Mixed coniferous forest. Phenology: spores.

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: vegetative only.
with B. E. Nelson

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: spores.
with B. E. Nelson

U.S.A., Idaho, Clearwater County: Clearwater Mountains: along and in vicinity of OHV Forest Trail 619, on the divide between Orogrande-Fuzzy creeks and Pine Creek, ca 1-1.5 air mi W of Cabin Point and 15 air mi NE of Pierce.
Along trail and in vicinity of mixed early- to mid-seral coniferous forest. Phenology: spores.
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: spores.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: Sheep Mountain Range: along Forest Road 5325, ca 2 air mi W of Sheep Mountain and 21.5 air mi NNE of Pierce.
Roadside collection; northerly aspect characterized by Tsuga mertensiana/Clintonia uniflora habitat type, with abundant towering Picea engelmannii and infrequent Abies lasiocapa. Phenology: spores.

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: spores.

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: spores.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: North Fork Clearwater River along Forest Road 247, ca 7.5 air mi SE of Black Mountain and ca 26.5 air mi NNE of Pierce.
Northwesterly-facing rock outcrop with seeps throughout; light ranges from low where Alnus rubra forms canopy, to moderate-heavy where lack of soil development precludes tree growth. Phenology: spores.

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: spores.

U.S.A., Idaho, Idaho County: Clearwater Mountains: ridge N of Middle Fork Clearwater River, along Forest Road 5515, ca 2 3/4 air mi SE of confluence of Lochsa and Selway rivers and ca 5 3/4 air mi S of Walde Mountain.
Shoulder-slope to ridgetop and along road in mixed coniferous forest, dominated by seral species such as Pinus ponderosa and Pseudotsuga menziesii with occasional mature Betula occidentalis. Phenology: spores.

U.S.A., Idaho, Idaho County: Clearwater Mountains: Lochsa River: southeasterly-facing toe slope N of river, along Forest Trail 2, ca 10.5 air mi NE of Lowell.
Mixed coniferous forest consisting largely of early to mid-seral species, transitioning to areas of shrub dominance on steeper slopes of southerly aspect with occasional rock outcrops. Phenology: spores.

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: spores.

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: spores.
with Joshua Miller

U.S.A., Idaho, Shoshone and Clearwater County: Mallard Larkins Pioneer Area: along Goat Ridge, from Larkins Peak to Grassy Point Trail Head, spanning ca 4-6 air mi NW of Black Mountain.
Along exposed, rocky ridgeline with well-developed cryptogamic crusts and steep shoulder slopes decadent with blooms of Lupinus, Phlox and Eriogonum. Phenology: spores.
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: spores.
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: spores.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: Mush Saddle and Pot Mountain Ridge, nearby Forest Road 711, ca 3-4 air mi SW of Cold Springs Peak.
60° slope with prominent rock outcrops, of southeasterly aspect. Phenology: spores.

U.S.A., Idaho, Clearwater County: Pot Mountain Ridge: Fly Hill and surrounding area, via Forest Road 720, ca 3.5 air mi NW of Hidden Creek Campground, along Fly Creek.
Riparian of creek and surrounding Engelmann spruce-rich, mountain hemlock forest. Phenology: vegetative only.

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: spores.

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: spores.
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: vegetative only.
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: spores.
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: spores.

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: spores.

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: spores.

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: spores.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: along North Fork Clearwater River and Forest Road 250 in Black Canyon, ca 1.5 air mi E of Flat Mountain, ca 32 air mi NE of Pierce
Brushy banks along the road. Phenology: spores.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: along Forest Road 711 above Cool Creek, ca 2 air mi W of Flat Mountain, ca 28.5 air mi NE of Pierce.
Steep roadcut bank with rock outcrops. Phenology: spores.

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.
Steep, open roadbank. Phenology: spores.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: Sheep Mountain Saddle, ca 20.5 air mi NNE of Pierce.
Mixed conifer forest with alder and maple. Phenology: spores.

U.S.A., Idaho, Clearwater County: Clearwater Mountains: above Beaver Creek ca 2/3 air mi N of the mouth of Steep Creek, ca 25 air mi NNE of Pierce.
Mature Thuja forest with fern understory. Phenology: spores.

U.S.A., Idaho, Idaho County: Clearwater Mountains: Lochsa River Corridor: above and W of Lochsa National Recreational Trail 2, ca 1 air mi SSW of Lochsa Historic Ranger Station.
Moist northeasterly-facing, shallow draw on shoulder slope with abundant Pseudotsuga menziesii in overstory and stands of Polystichum munitum and Pteridium aquilinum occupying understory; Adiantum pedatum locally abundant where moist microsites allow. Phenology: spores.

U.S.A., Idaho, Idaho County: Clearwater Mountains: Lochsa River Corridor: south side of river along Trail 133, ca 10 air mi NE of Lowell.
Lush riparian and toeslope of northerly aspect typified by Thuja plicata/ Athyrium filix-femina habitat type. Phenology: spores.
with Catherine Curtis

U.S.A., Idaho, Idaho County: Clearwater Mountains: Canyon Creek, at confluence with South Fork Canyon Creek, ca 4.5 air mi NNE of Lowell.
Lush creekside rock faces, boasting abundant bryophyte, lichen, and fern diversity; moderate shade. Phenology: spores.

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.
Along shoulder slope of southerly aspect in mixed conifer forest. Phenology: spores.

U.S.A., Idaho, Idaho County: Clearwater Mountains: Mocus Point Trail 469, ca 15 air mi NE of Lochsa Historical Ranger Station.
Draw of northeasterly aspect with Pseudotsuga menziesii and Abies grandis in the overstory and a largely depauperate understory. Phenology: spores.

U.S.A., Idaho, Clearwater County: Clearwater Mountain: Smith Ridge along Trail 240, ca 6 air mi NW Canyon Work Center.
North-facing shoulder slope in mature community of Tsuga mertensiana/Menziesia ferruginea. Phenology: spores.
with Gavin Gardner

U.S.A., Idaho, Clearwater County: Clearwater Mountains: Chateau Falls Research Natural Area: in Chateau Creek drainage, ca 18 air mi NNE of Pierce.
Seral community dominated by Pseudotsuga menziesii with strong understory shrub component. Phenology: spores.
with Gavin Gardner

Polystichum munitum ssp. curtum (1931)
Polystichum munitum (Kaulf.) Presl. ssp. curtum Ewan
U.S.A., California: San Bernardino Mountains: Sawpit Canyon.
Under oaks of shaded glen. Phenology: spores.
Type Specimen: Isotype for Polystichum munitum (Kaulf.) Presl. ssp. curtum Ewan. Amer. Fern J. 32: 99. 1942.
2. Polystichum munitum (Kaulf.) Presl. ssp. curtum Ewan
Annotated by D. H. Wagner in 1976.