: 1.21 $2024-03-29T14:18:52-7:0044.210.86.29searchRMRM642907 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.7933Robert D. Dorn1999529149U.S.A.WyomingNatrona-107.06666743.452195Rocky limestone ridge with Townsendia nuttallii and Astragalus. Phenology: flowering.RMRM353657 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.2605Robert W. Lichvar198053124U.S.A.WyomingJohnsonBud Love Big Game Winter Range.-106.79344.43971676Clacareous knoll with Cercocarpus and Lesquerella. Paratype. Phenology: flowering.RMRM645277 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.18776Walter Fertig1999714195U.S.A.WyomingJohnsonBig Horn Range: east side of Billy Creek Road (BLM Road 6207) at sharp southeast bend along divide between Billy Creek and Poison Creek, ca 5 mi ENE of Hazelton.-106.877844.112823472365Outcrops of dolomite bedrock with thin brown loamy-clay soil in openings on ridgetop in woods of Pinus flexilis; site dominated by Elymus spicatus, Koeleria macrantha, and Junieprus communis. Phenology: fruiting.RMRM579859 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12640Walter Fertig199269161U.S.A.WyomingNatronaSoutheastern Foothills Big Horn Mountains: Big Horn Mountains Road, ca 2.5 air mi NW of junction with Buffalo Creek Road, ca 13 air mi N of Arminto.-107.173843.364521342195Rocky limestone talus flats and gentle south-facing slopes; soil thin, sandy with abundant limestone fragments and slabs. Phenology: fruiting.RMRM579983 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12651Walter Fertig199269161U.S.A.WyomingNatronaSoutheastern Foothills of the Big Horn Range: west slope Black Rim from Lost Canyon Creek watershed N to Thirty-three Mile Road, ca 23 air mi NE of Arminto.-107.035243.435920122134Ridgetops and upper slopes of east-west running ridges between deep canyons; soils thin, sandy, with broken limestone slabs and gravel. Phenology: flowering & fruiting.RMRM579984 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12662Walter Fertig199269161U.S.A.WyomingNatronaSoutheastern Foothills of the Big Horn Range: Thirty-three Mile Road, adjacent to upper First Water Draw Creek, ca 21 air mi NNE of Arminto.-107.10143.47823412483Limestone outcrops on west facing slope and summit of hill on east side of road; higher grass cover and more mesic that most Cymopterus sites. Phenology: flowering & fruiting.RMRM579986 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12667Walter Fertig199269161U.S.A.WyomingNatronaSoutheastern Foothills of the Big Horn Range: adjacent to Thirty-three Mile Road, ca 21.5 air mi NNE of Arminto.-107.140843.47824142560Limestone outcrops and broken talus on summits, and west and south-facing slopes of ridges. Phenology: fruiting.RMRM579985 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12668Walter Fertig1992610162U.S.A.WyomingNatronaSoutheastern Foothills of the Big Horn Range: hill ca 0.5 mi E of Thirty-three Mile Road, ca 15.5 air mi N of Arminto.-107.213343.407425302621Southwest-facing slope, open summit, and northwest facing ridges; soil thin, exposed limestone bedrock and talus. Phenology: flowering & fruiting.RMRM579987 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12683Walter Fertig1992611163U.S.A.WyomingNatronaSoutheastern Foothills Big Horn Mountains: ca 6 air mi N of Arminto, c 2 air mi SW of Deadman Butte.-107.252943.264720422134Open, exposed limestone bedrock on summit and upper slopes of large ridge and in cracks in tilted bedrock on lower slopes of two adjacent ridges. Phenology: fruiting.RMRM579988 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12685Walter Fertig1992611163U.S.A.WyomingNatronaSoutheastern Foothills Big Horn Mountains: Baker Cabin Road, W of Three Buttes, ca 12 air mi NE of Arminto.-107.114443.321719391951Gypsum/sandy soil with abundant limestone gravel on surface on both sides of road; low vegetative cover. Phenology: fruiting.RMRM579989 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12687Walter Fertig1992612164U.S.A.WyomingJohnsonEastern slope Big Horn Mountains: south end of Government stock pond, adjacent to Mayoworth Slope Road, ca 7 air mi W of Mayoworth.-106.918443.83832243Exposed limestone talus outcrop southeast of stockpond; open site with Pinus ponderosa, Astragalus miser, and Antennaria. Phenology: fruiting.RMRM579990 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12690Walter Fertig1992612164U.S.A.WyomingJohnsonEastern slope Big Horn Mountains: Gardner Mountain, ca 8.5 air mi W of Mayoworth.-106.938543.823923292378Exposed limestone outcrops and adjacent grasslands on thin, limestone parent material extending to edge of pine forest on gentle east-facing slope. Phenology: flowering.RMRM579991 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12696Walter Fertig1992612164U.S.A.WyomingJohnsonEastern slope Big Horn Mountains: northeast slope of Gardner Mountain adjacent to Mayoworth Slope Road S of Snow Cave Ridge, ca 9.5 air mi WNW of Mayoworth.-106.956443.853125002560Bare, exposed limestone bedrock and flat talus slopes and adjacent grasslands and granite outcrops. Phenology: flowering.RMRM579993 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12701Walter Fertig1992613165U.S.A.WyomingJohnsonEastern slope Big Horn Mountains: south rim of Packsaddle Canyon, ca 9 air mi NW of Mayoworth, ca 36 air mi SSW of Buffalo.-106.938543.910220122195Limestone rock outcrops and sandy soil with limestone talus on open or semi-shady slopes in openings in Ponderosa pine and mountain mahogany shrublands. Phenology: flowering & fruiting.RMRM579992 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12702Walter Fertig1992613165U.S.A.WyomingJohnsonEastern slope Big Horn Mountains: Red Spring Hill, ca 11 air mi NW of Mayoworth.-106.978743.895924392469West-facing grassy slope with thin soil and exposed limestone bedrock and loose stones; with Eritrichium and Astragalus miser. Phenology: fruiting.RMRM579994 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12723Walter Fertig1992620172U.S.A.WyomingJohnsonEastern slope Big Horn Mountains: Barnum Slope; Box Elder, A, and Narrow Ridges, 1-2.5 air mi W of Barnum Road, ca 7.5 air mi NW of Barnum.-106.961843.75218532085Exposed limestone bedrock and open talus fields on gentle east-facing slope. Phenology: fruiting.RMRM579995 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12738Walter Fertig1992621173U.S.A.WyomingJohnsonEastern slope Big Horn Mountains: Poison Creek Canyon, ca 21.5 air mi SSW of Buffalow.-106.858244.082919512073Steep, south-facing limestone outcrop on open slope above creek in clearing in Engelmann spruce forest. Phenology: fruiting.RMRM579996 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12742Walter Fertig1992621173U.S.A.WyomingJohnsonEastern slope Big Horn Mountains: Billy Creek Access Road, ca 21 air mi SW of Buffalo.-106.838144.082922922329Exposed limestone bedrock and broken talus along roadcut and on small limestone outcrops among tall grasses in mixed Ponderosa pine/limber pine woods. Phenology: fruiting.RMRM579997 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.12743Walter Fertig1992621173U.S.A.WyomingJohnsonEastern slope Big Horn Mountains: adjacent to Billy Creek Access Road, ca 20 air mi SW of Buffalo.-106.878344.11172371Open canopy meadow and edge of limber pine woods with thin, limestone-derived soils and areas of exposed bedrock. Phenology: fruiting.RMRM363437 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.5240B. E. Nelson198069161U.S.A.WyomingJohnsonBig Horn Mountains: Arch Creek, ca 8.5 air mi WNW of Mayoworth, ca 19.5 air mi NW of Kaycee.-106.956443.86782439Ledges on limestone cliffs and flats above. Phenology: flowering.RMRM Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.5731B. E. Nelson1980618170U.S.A.WyomingWashakieBig Horn Mountains: ridge above the Middle Fork Powder River along the Powder River Trail-Hazelton Road, ca 19 air mi SSE of Big Trails, ca 30 air mi SSE of Ten Sleep.-107.139243.53442560Stony ridge top-limestone.RMRM Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.5732B. E. Nelson1980618170U.S.A.WyomingNatronaBig Horn Mountains: along Thirty Three Mile Road, ca 25 air mi NNE of Arminto, ca 43.5 air mi WNW of Midwest.-107.119443.49112530Stony ridge-limestone.RMRM363432 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.5733B. E. Nelson1980618170U.S.A.WyomingNatronaBig Horn Mountains: along Thirty Three Mile Road, ca 22 air mi NNE of Arminto, ca 42 air mi WNW of Midwest.-107.091443.4632317Stony ridge-limestone. Phenology: fruiting.RMRM363435 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.5734B. E. Nelson1980618170U.S.A.WyomingNatronaBig Horn Mountains: along Thirty Three Mile Road, ca 22.5 air mi NNE of Arminto, ca 39 air mi WNW of Midwest.-107.031643.44812073Stony meadow-limestone. Phenology: flowering & fruiting.RMRM363433 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.5735B. E. Nelson1980618170U.S.A.WyomingNatronaBig Horn Mountains: along Thirty Three Mile Road, ca 22.5 air mi NNE of Arminto, ca 36.5 air mi WNW of Midwest.-106.991743.43361951Stony meadow-limestone. Phenology: flowering & fruiting.RMRM363431 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.8139B. E. Nelson1981715196U.S.A.WyomingNatronaBig Horn Mountains: on Thirty Three Mile Road, ca 22 air mi NNE of Arminto, ca 40 air mi W of Midwest.-107.051443.44832195Thin soil over broken limestone in mountain mahogany thickets with Erigeron compositus, Machaeranthera grindelioides, and Potentilla. Phenology: vegetative only.RMRM363430 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.8140B. E. Nelson1981715196U.S.A.WyomingNatronaBig Horn Mountains: on Thirty Three Mile Road, ca 22 air mi NNE of Arminto, ca 41 air mi W of Midwest.-107.071443.46282286Thin soil over broken limestone in mountain mahogany thickets with Erigeron compositus, Machaeranthera grindelioides, Potentilla, and Astragalus miser. Phenology: fruiting.RMRM Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.5880bJune Haines1986519139U.S.A.WyomingNatronaCa 6 air mi N of Arminto.-107.252943.264720122036At base of small rock outcrop.RMRM363438 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.10429Ronald L. Hartman197981213U.S.A.WyomingNatronaBig Horn Mountains: ca 13.5 air mi NNE of Arminto.-107.190643.36391981Limestone outcrops on south-west exposure. Phenology: vegetative only.RMRM363429 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.10545Ronald L. Hartman197981213U.S.A.WyomingWashakieBig Horn Mountains: ca 17 air mi SSW of Big Trails.-107.139243.54892439Limestone outcrop on west exposure. Phenology: fruiting.RMRM363443 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.11248Ronald L. Hartman Keith H. Dueholm1980526147U.S.A.WyomingBig HornBig Horn Mountains: ca 12.5 air mi ESE of Hyattville.-107.3727844.2052621Limestone cap rock beneath Pinus ponderosa. Phenology: flowering.RMRM363441 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.9737Ronald L. Hartman1979628179U.S.A.WyomingJohnsonBig Horn Mountains: Arch Creek, ca 9 air mi WNW of Mayoworth.-106.956443.86782439Limestone outcrops, rocky slopes, and grassy hill tops. Phenology: flowering & fruiting.RMRM363439 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.9800Ronald L. Hartman1979628179U.S.A.WyomingJohnsonBig Horn Mountains: Mayoworth Stock Trail, ca 4 air mi W of Mayoworth.-106.875643.83971829Red beds, open slope and wooded stream bank. Phenology: fruiting.RMRM704282 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.30642B. E. Nelson1994523143U.S.A.WyomingNatronaSouthern Powder River Basin/Southeastern Plains: Southern Powder River Basin: along Baker Cabin or County Road 108 between North Fork Cottonwood Creek and Gray Wall, ca 12 air mi NE of Arminto; ca 51 air mi NW of Casper.-107.114443.321719321978Stony, calcareous knoll with cushion plants and mountain mahogany thickets. Phenology: flowering & fruiting.RMRM642907 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.7933Robert D. Dorn1999529149U.S.A.WyomingNatrona-107.05543.45022195Rocky limestone ridge with Townsendia nuttallii and Astragalus. Phenology: flowering.RMRM Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.8192Joy Handley201563154U.S.A.WyomingWashakieBig Horn Mountains: ridge at head of Roush Creek, ca 14 air mi SW of Barnum.25122613Limestone outcrops and calcareous stony ridgetop. Phenology: flowering.RMRM Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.8193Joy Handley201563154U.S.A.WyomingNatronaBig Horn Mountains: along Thirtythree Mile Road, head of First Water Draw, S of Eagle Creek, ca 16 air mi SW of Barnum.2521Rocky calcareous ridgetop. Phenology: flowering.RMRM Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.8199Joy Handley201566157U.S.A.WyomingBig HornBig Horn Mountains: head of Luman Creek, along BLM 1117 (Hyattville Road), ca 12 air mi E of Hyattville.2317Two small limestone outcrops. Occurs with Pinus ponderosa, Pseudotsuga, Mahonia, Poa secunda, Pseudoroegneria. Phenology: flowering.RMRM Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.8207Joy Handley201567158U.S.A.WyomingWashakieBig Horn Mountains: ridge between Deep and Lost creeks, north side of Cherry Creek Road, ca 16 air mi S of Big Trails, ca 23 air mi WSW of Barnum.2079Ridge with limestone caps. Occurs with Pseudoroegneria, Koeleria, Linum, Stenotus, Festuca idahoensis. Phenology: flowering.RMRM930122 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.4146Bonnie Heidel2015618169U.S.A.WyomingJohnsonBig Horn Mountains: North Fork Powder River Wilderness Study Area: east side of river, ca 30 mi NW of Kaycee.1264Southwest-facing rim with barren cushion plant community and mountain mahogany scrub; with Paronychia sessiliflora, Petrophyton caespitosum, Elymus spicatus, Penstemon lariciolius. Phenology: flowering & fruiting.RMRM930127 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.4099Bonnie Heidel2015616167U.S.A.WyomingJohnsonBig Horn Mountains: North Fork Powder River Wilderness Study Area: N of Packsaddle Canyon, ca 29 m NW of Kaycee.2408Ridgetop outcrops of limestone; at rim; finger ridges and in open forest; with Elymus spicatus, Eremogone congesta, Pseudotsuga menziesii, Juniperus communis, Pinus flexilis. Phenology: flowering & fruiting.RMRM930055 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.4135Bonnie Heidel2015617168U.S.A.WyomingJohnsonBig Horn Mountains: North Fork Powder River Wilderness Study Area: N of Pass Creek, ca 28 mi NW of Kaycee.2317Limestone outcrop rim, in mountain mahogany just above burned woodland; with Packera streptanthifolia, Elymus spicatus.RMTRM363437 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91, fig. 19855240B. E. Nelson198069161U.S.A.WyomingJohnsonBig Horn Mountains: Arch Creek, ca 8.5 air mi WNW of Mayoworth; ca 19.5 air mi NW of Kaycee.2439Ledges on limestone cliffs and flats above. Phenology: flowering. Type Specimen.RMTRM363432 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91, fig. 1985.5733B. E. Nelson1980618170U.S.A.WyomingNatronaBig Horn Mountains: along Thirty Three Mile Rd, ca 22 air mi NNE of Arminto; ca 42 air mi WNW of Midwest.2317Calcareous stony ridge. Phenology: flowering & fruiting. Type Specimen.RMTRM363435 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91, fig. 1985.5734B. E. Nelson1980618170U.S.A.WyomingNatronaBig Horn Mountains: along Thirty Three Mile Rd, ca 22.5 air mi NNE of Arminto; ca 39 air mi WNW of Midwest.2073Calcareous stony meadow. Phenology: flowering & fruiting. Type Specimen.RMTRM363433 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91, fig. 1985.5735B. E. Nelson1980618170U.S.A.WyomingNatronaBig Horn Mts.; along Thirty Three Mile Rd, ca 22.5air mi NNE of Arminto, ca 36.5 air mi WNW of Midwest.1951Calcareous stony meadow. Phenology: flowering & fruiting. Type Specimen.RMTRM363431 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91, fig. 1985.8139B. E. Nelson1981715196U.S.A.WyomingNatronaBig Horn Mountain: on Thirty Three Mile Rd, ca 22 air mi NNE of Arminto; ca 40 air mi W of Midwest.2195Thin soil over broken limestone in Cercocarpus ledifolius thickets with Erigeron compositus, Macheranthera grindeliodes and Potentilla. Phenology: vegetative only. Type Specimen.RMTRM363430 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91, fig. 1985.8140B. E. Nelson1981715196U.S.A.WyomingNatronaBig Horn Mountains: on Thirty Three Mile Rd, ca 22 air mi NNE of Arminto; ca 41 air mi W of Midwest.2286Thin soil over broken limestone in Cercocarpus ledifolius thickets with Erigeron compositus, Machaeranthera grindeloides, Potentilla, and Astragalus miser. Phenology: fruiting. Type Specimen.RMTRM363428 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37:91, fig. 19853534Robert D. Dorn1980716198U.S.A.WyomingNatrona-107.233143.32172286Rocky slope with Sphaeromeria capitata and Erigeron. Phenology: fruiting. Type Specimen.RMTRM363438 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91, fig. 1985.10429Ronald L. Hartman197981213U.S.A.WyomingNatronaBig Horn Mountains: ca 13.5 air mi NNE of Arminto.1981Limestone outcrops on SW exposure. Phenology: flowering. Type Specimen.RMTRM363429 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91, fig. 1985.10545Ronald L. Hartman197981213U.S.A.WyomingWashakieBig Horn Mountains: ca 17 air mi SSW of Big Trails.2439Limestone outcrops on W exposure. Phenology: fruiting. Type Specimen.RMTRM363443 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91, fig. 1985.11248Ronald L. Hartman Keith H. Dueholm1980526147U.S.A.WyomingBig HornBig Horn Mountains: ca 12.5 air mi ESE of Hyattville.2621Limestone caprock with Pinus ponderosa. Phenology: flowering. Type Specimen.RMTRM363424 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Holotype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91, fig. 1985.9200Ronald L. Hartman Ann Odasz1979621172U.S.A.WyomingBig HornBig Horn Mountains: ca 7.3 air mi WNW of Tyrrell Ranger Station.2134Sandstone ridge topped by limestone; with Pinus ponderosa. Flowers yellow. Phenology: flowering. Type Specimen.RMTRM363441 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91, fig. 1985.9737Ronald L. Hartman1979628179U.S.A.WyomingJohnsonBig Horn Mountains: Arch Creek, ca 9 air mi WNW of Mayoworth.2439Limestone outcrops, rocky slopes, and grassy hilltops. Phenology: flowering & fruiting. Type Specimen.RMTRM363439 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91, fig. 1985.9800Ronald L. Hartman1979628179U.S.A.WyomingJohnsonBig Horn Mountains: Mayoworth Stock Trail, ca 4 air mi W of Mayoworth.1829Redbeds, open slope and wooded stream bank. Phenology: fruiting. Type Specimen.RMTRM353657 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91, fig. 1985.2605Robert W. Lichvar198053124U.S.A.WyomingJohnsonBud Love Big Game Winter Range.-106.79344.43971676Calcareous knoll with Cercocarpus and Lesquerella. Phenology: flowering. Type Specimen.RMTRM363434 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91. 1985.5732B. E. Nelson1980618170U.S.A.WyomingNatronaBig Horn Mountains; along Thirty Three Mile Road, ca. 25 air mi NNE of Arminto, ca. 43.5 air mi WNW of Midwest.2530Calcareous stony ridge. Phenology: flowering. Type Specimen.RMTRM363442 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91. 1985.9663Ronald L. Hartman1979628179U.S.A.WyomingJohnsonBig Horn Mountains; north fork Crazy Woman Creek, ca. 13 air mi SW of Buffalo.20122134Limestone outcrops and rocky slopes, shaded streamside, and aspen woodlands with adjacent meadows. Phenology: fruiting. Type Specimen.RMTRM363436 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91. 1985.5731B. E. Nelson1980618170U.S.A.WyomingWashakieBig Horn Mountains; ridge above the middle fork Powder River along the Powder River Trail - Hazelton Road, ca. 19 air mi SSE of Big Trails, ca. 30 air mi SSE of Ten Sleep.2560Calcareous stony ridge top. Phenology: flowering. Type Specimen.RMTRM363440 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Paratype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37: 91. 1985.9788Ronald L. Hartman1979628179U.S.A.WyomingJohnsonBig Horn Mountains; Snow Cave Ridge, ca. 8 air mi WNW of Mayoworth.2439Limestone outcrops and grassy slopes. Phenology: flowering & fruiting. Type Specimen.RMTCOLO400331 Cymopterus williamsiiphysical specimenApiaceaeCymopteruswilliamsiiR. L. Hartm. and Constance.Isotype for <i>Cymopterus</i> <i>williamsii</i> R. L. Hartm. and Constance.. Brittonia 37:91. 1985.9200Ronald L. Hartman Ann Odasz1979621172U.S.A.WyomingBig HornBig Horn Mountains; ca 7.3 air mi WNW of Tyrrell Ranger Station.2134Sandstone ridge topped by limestone; with Pinus ponderosa. Flowers yellow. Phenology: flowering & fruiting. Type Specimen.36003,1,0true