Plant Survey of Steamboat Rock

This list is from a plant survey conducted by the Central Washington Chapter WNPS. This checklist compiled starting with the 1954 checklist of Engvall and Pierce and the 1977 checklist of E. Carlson

• Grimmiaceae - Mosses
  
• Grimea pulvinata
• Tortula princeps
  
• Selaginellaceae
  
• Selaginella densa
  
• Polypodiaceae
  
• Woodsia oregana
  
• Berberidaceae
  
• Berberis aquifolium
  
• Ranunculaceae
  
• Delphinium nuttallianum
• Ranunculus glaberrimus
  
• Chenopodiaceae
  
• Atriplex spinosa
• Salsola kali
• Sarcobatus vermiculatus
  
• Portulacaceae
  
• Lewisia rediviva
• Montia perfoliata
• Talinum spinescens
  
• Polygonaceae
  
• Eriogonum heraculoides
• Eriogonum niveum
• Eriogonum sphaerocephalum
• Eriogonum thymoides
  
• Violaceae
  
• Viola trinervata
  
• Cruciferae
  
• Arabis cusickii
• Arabis holboellii
• Draba verna
• Erysimum occidentale
• Halimolobos whitedii
• Sisymbrium altissimum
• Thelypodium laciniatum
  
• Primulaceae
  
• Dodecatheon conjugens
• Dodecatheon cusickii
• Dodecatheon pulchellum
  
• Saxifragaceae
  
• Heuchera cylindrica
• Lithophragma bulbifera
• Lithophragma parviflorum
• Saxifraga integrifolia
  
• Grossulariaceae
  
• Ribes aureum
• Ribes cereum
  
• Rosaceae
  
• Amelanchier alnifolia
• Geum triflorum
• Purshia tridentata
  
• Legum.-Papilionoid
  
• Astragalus purshii
• Astragalus spaldingii
• Lupinus sulphureus
  
• Anacardiaceae
  
• Rhus glabra
• Rhus radicans
  
• Geraniaceae
  
• Erodium cicutarium
• Geranium viscosissimum
  
• Onagraceae
  
• Clarkia pulchella
  
• Santalaceae
  
• Commandra pallida
  
• Hydrangeaceae
  
• Philadelphus lewisii
  
• Valerianaceae
  
• Plectriris macrocera
  
• Umbelliferae
  
• Lomatium dissectum
• Lomatium geyeri
• Lomatium hambleninae
• Lomatium macrocarpum
• Lomatium triternatum
  
• Hydrophyllaceae
  
• Hydrophyllum capitatum
• Phacelia linearis
  
• Boraginaceae
  
• Lithospermum ruderale
• Mertensia longiflora
  
• Polemoniaceae
  
• Leptodactylon pungens
• Microsteris gracilis
• Phlox caespitosa
• Phlox longifolia
• Polemonium micranthum
  
• Labiatae
  
• Salvia carnosa
  
• Plantaginaceae
  
• Plantago patagonica
  
• Scrophulariaceae
  
• Castilleja lutescens
• Collinsia parviflora
• Penstemon pruinosa
• Penstemon speciosus
• Verbascum thapsus
  
• Compositae
  
• Achillea millefolium
• Antennaria dimorpha
• Artemisia rigida
• Artemisia tridentata
• Balsamorhiza hookeri
• Balsamorhiza sagittata
• Chaenactis douglassi
• Chrysothamnus nauseosus
• Erigeron compositus
• Erigeron linearis
• Erigeron pumilus
• Haplopappus resinosus
• Haplopappus stenophyllus
• Microseris troximoides
• Senecio integerrimus
• Taraxacum officinale
• Wyethis amplexicaulis
  
• Iridaceae
  
• Iris missouriensis
  
• Liliaceae
  
• Allium geyeri
• Fritillaria pudica
• Zygadenus venenosus
  
• Poaceae
  
• Agropyron spicatum
• Bromus tectorum
• Elymus cinereus
• Oryzopsis hymenoides
• Poa sandbergii
• Sitanion hystrix
• Stipa comata