NPWRC :: Rare Field Guide Page 1 of2

Northern Prairie Wildlife Research Center

Wyoming Rare Plant Field Guide

Yellowstone Sand Verbena -- Abronia ammophila American Trailplant -- Adenocaulon bicolor Pink Agoseris -- Agoseris lackschewitzii Ross' Bentgrass -- Agrostis rossiae Larimer Aletes -- Aletes humilis Round-leaved Orchid -- Amerorchis rotundifolia Sweet-flowered Rock Jasmine -- Androsace chamaejasme var. carinata Meadow Pussytoes -- Antennaria arcuata Laramie Columbine -- laramiensis Small Rock Cress -- Arabis pusilla Red Manzanita -- Arctostaphylos rubra Northern Arnica -- Arnica lonchophylla Mystery Wormwood -- Artemisia biennis var. diffusa Porter's Sagebrush -- Artemisia porteri Dwarf Milkweed -- Asclepias uncialis Soft Aster -- Aster mollis Meadow Milkvetch -- Astragalus diversifolius var. diversifolius Bastard Draba Milkvetch -- Astragalus drabelliformis Dubois Milkvetch -- Astragalus gilviflorus var. purpureus Hyattville Milkvetch -- Astragalus jejunus var. articulatus Starveling Milkvetch -- Astragalus jejunus var. jejunus Payson's Milkvetch -- Astragalus paysonii Precocious Milkvetch -- Astragalus proimanthus Upward-lobe Moonwort -- Botrychium ascendens Prairie Moonwort -- Botrychium campestre Foxtail Sedge -- Carex alopecoidea Seaside Sedge -- Carex incurviformis Livid Sedge -- Carex livida Black and Purple Sedge -- Carex luzulina var. atropurpurea Cedar Rim Thistle -- Cirsium aridum Ownbey's Thistle -- Cirsium ownbeyi Many-Stemmed Spider-Flower -- Cieome multicaulis Owl Creek Miner's Candle -- Cryptantha subcapitata Williams' Waferparsnip -- Cymopterus williamsii Clustered Lady's Slipper -- Cypripedium fasciculatum Mountain Lady's Slipper -- Cypripedium montanum Wyoming Tansymustard -- Descurainia torulosa Boreal Draba -- Draba borealis Rockcress Draba -- Draba densifolia var. apiculata Comb-Hair Whitlow-Grass -- Draba pectinipila Giant Helleborine -- Epipactis gigantea Dwarf Scouring Rush -- Equisetum scirpoides Wooly Fleabane -- Erigeron lanatus Rabbit Buckwheat -- Eriogonum brevicaule var. canum Hall's Fescue -- Festuca hallii

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Colorado Butterfly Plant -- Gaura neomexicana ssp. coloradensis Narrowleaf Goldenweed -- Haplopappus macronema var. linearis Weber's Scarlet-Gilia -- Jpomopsis aggregata spp. weberi Kirkpatrick's Ipomopsis -- Jpomopsis spicata ssp. robruthii Sidesaddle Bladderpod -- Lesquere/la arenosa var. argillosa Keeled Bladderpod -- Lesquerella carinata var. carinata Fremont Bladderpod -- Lesquerella fremontii Large-Friuted Bladderpod -- Lesquerella macrocarpa Payson's Bladderpod -- Lesquere/la paysonii Trailing Clubmoss -- Lycopodium complanatum Treelike Clubmoss -- Lycopodium dendroideum Tansy-Aster -- Machaeranthera coloradoensis Marsh Muhly -- Muhlenbergia glomerata Contracted Indian Ricegrass -- Oryzopsis contracta Naked-Stemmed Parrya -- Parrya nudicaulis Alpine Feverfew -- Stemless Beardtongue -- Penstemon acaulis var. acaulis Cary's Beardtongue -- Penstemon caryi Gibben's Beardtongue -- Penstemon gibbensii Opal Phlox -- Phlox opalensis Beaver Rim Phlox -- Phlox pungens Tufted Twinpod -- Physaria condensata Dorn's Twinpod -- Physaria dornii Devil's Gate Twinpod -- Physaria eburniflora Creeping Twinpod -- Physaria integrifolia var. monticola Rocky Mountain Twinpod -- Physaria saximontana var saximontana Greenland Primrose -- Primula egaliksensis Absaroka Goldenweed -- Pyrrocoma carthamoides var. subsquarrosus Persistent Yellowcress -- Rorippa calycina Northern Blackberry -- Rubus arcticus ssp. acaulis Myrtleleaf Willow -- Salix myrtillifolia var. myrtillifolia Autumn Willow -- Salix serissima Weber's Saw-Wort -- Saussurea weberi Cottongrass Bulrush -- Scirpus cyperinus Rolland's Bulrush -- Scirpus rollandii Shoshonea -- Shoshonea pulvinata Pale Blue-Eyed Grass -- Sisyrinchium pallidum Laramie False Sagebrush -- Sphaeromeria simplex Ute Lady's Tresses -- Spiranthes diluvialis Hapeman's Sullivantia -- Sullivantia hapemanii var. hapemanii Green River Greenthread -- Thelesperma caespitosum Uinta Greenthread -- Thelesperma pubescens North Fork Easter Daisy -- Townsendia condensata var. anomala Cedar Mountain Easter Daisy -- Townsendia microcephala Barneby's Clover -- Trifolium barnebyi Desert Yellowhead -- Yermo xanthocephalus

U.S. Department of the Interior I U.S. Geological Survey URL: http://www.npwrc.usgs.gov/resource/plants/wyplant/species.htm Page Contact Information: [email protected] Page Last Modified: August 3, 2006

http://www.npwrc.usgs.gov/resource/plants/wyplant/species.htm 3117/2011