persius — eastern Persius duskywing Erynnis martialis - mottled duskywing Euphydryas editha taylori — Taylor's checkerspot Gomphus ventricosus - skillet clubtail Hemileuca sp. - bogbean buckmoth Hesperia ottoe — Ottoe skipper Papaipema aweme — Aweme borer Icaricia saepiolus insulanus — island blue Prodoxus quinquepunctellus — five-spotted bogus yucca moth Satyrium semiluna — half-moon hairstreak Schinia avemensis — gold-edged gem Schinia bimatris — white flower moth Somatochlora hineana - Hine's emerald Stylurus amnicola - riverine clubtail Stylurus laurae - Laura's clubtail Stylurus olivaceus - olive clubtail Tegeticula corruptrix — non-pollinating yucca moth Tegeticula yuccasella — yucca moth Threatened arthropods Apodemia mormo (prairie population) — Mormon metalmark Euphyes vestris (western population) — dun skipper Hesperia dacotae — Dakota skipper Oarisma poweshiek — Poweshiek skipperling Satyrium behrii columbia — Behr's hairstreak, columbia subspecies Arthropods of special concern Danaus plexippus — monarch Limenitis weidemeyerii — Weidemeyer's admiral Polites sonora — Sonora skipper Molluscs Extirpated molluscs Alasmidonta heterodon — dwarf wedgemussel Cryptomastix devia — Puget Oregonian snail Endangered molluscs Allogona townsendiana — Oregon forestsnail Epioblasma torulosa rangiana — northern riffleshell Epioblasma triquetra — snuffbox Haliotis kamtschatkana — northern abalone Lampsilis fasciola — wavy-rayed lampmussel Obovaria subrotunda — round hickorynut Physella johnsoni — Banff Springs snail Physella wrighti — hotwater physa Pleurobema sintoxia — round pigtoe Prophysaon coelureum — blue-grey taildropper slug Ptychobranchus fasciolaris — kidneyshell Simpsonaias ambigua — mudpuppy mussel Villosa fabalis — rayed bean Threatened molluscs Hemphillia dromedarius — dromedary jumping-slug Molluscs of special concern Gonidea angulata — Rocky Mountain ridged mussel Lampsilis cariosa — yellow lampmussel Nearctula sp. — threaded vertigo Ostrea conchaphila — Olympia oyster Vascular plants Extirpated vascular plants Collinsia verna — spring blue-eyed mary Desmodium illinoense — Illinois tick-trefoil Endangered vascular plants Abronia umbellata — pink sand-verbena Actaea elata — tall bugbane Adiantum capillus-veneris — southern maidenhair fern Agalinis aspera — rough agalinis Agalinis gattingeri — Gattinger's agalinis Agalinis skinneriana — Skinner's agalinis Ammannia robusta — scarlet ammannia Antennaria flagellaris — stoloniferous pussytoes Aristida basiramea — forked three-awned grass balsamorhiza deltoidea — deltoid balsamroot Betula lenta — cherry birch Braya longii — Long's braya Buchnera americana — bluehearts Camissonia contorta — contorted-pod evening-primrose Carex lupuliformis — false hop sedge Carex juniperorum — juniper sedge Castanea dentata — American chestnut Castilleja levisecta — golden paintbrush Chimaphila maculata — spotted wintergreen Cirsium pitcheri — Pitcher's thistle Collomia tenella — slender collomia Coreopsis rosea — pink coreopsis Cryptantha minima — tiny cryptanthe Cypripedium