Rare Plant Field Guide
   

This online guide is an adaptation of our Field Guide to the Rare Plants of Washington, which was published in 2011 with the intent to aid amateur and professional botanists in the identification of our state's rare plant species.  With the inclusion of descriptions from an earlier version of the guide, this online source now includes 341 vascular plants, 16 mosses and one lichen.  Each treatment includes information on identification, phenology, range, habitat, ecology, state status, inventory needs, threats, and references. Species and habitat photos, line drawings and distribution maps are also included. Android and iOS versions are available for mobile applications. 
 
The printed version of the guide is the culmination of a cooperative venture between the Washington State Department of Natural Resources' Natural Heritage Program (WNHP), the Spokane District of the U.S.D.I. Bureau of Land Management (BLM), the Washington Native Plant Society, the University of Washington Herbarium at Burke Museum, and the University of Washington Press. Funding for this online version was provided by the U.S. Fish and Wildlife Service.
 
 
To find a species, click on the first letter of its scientific name, then select the species name from the list.
 
A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z 
 

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Calochortus longebarbatus var. longebarbatus
Calochortus macrocarpus var. maculosus
Calochortus nitidus
Campanula lasiocarpa
Carex anthoxanthea
Carex capillaris
Carex chordorrhiza
Carex circinata
Carex comosa
Carex densa
Carex flava
Carex gynocrates
Carex heteroneura var. epapillosa
Carex macrochaeta
Carex magellanica ssp. irrigua
Carex media
Carex obtusata
Carex pallescens
Carex pauciflora
Carex pluriflora
Carex praeceptorum
Carex proposita
Carex rostrata
Carex scirpoidea ssp. scirpoidea
Carex stylosa
Carex sychnocephala
Carex tenera var. tenera
Carex tenuiflora
Carex vallicola
Cassiope lycopodioides
Castilleja cryptantha
Castilleja levisecta
Castilleja victoriae
Chaenactis thompsonii
Cheilanthes feei
Chrysolepis chrysophylla var. chrysophylla
Chrysosplenium tetrandrum
Chylismia scapoidea ssp. scapoidea
Cicuta bulbifera
Cimicifuga elata
Cistanthe rosea
Claytonia multiscapa ssp. pacifica
Cochlearia groenlandica
Coeloglossum viride
Collinsia sparsiflora var. bruceae
Collomia macrocalyx
Comastoma tenellum
Coptis aspleniifolia
Coptis trifolia
Corispermum pallidum
Corydalis aquae-gelidae
Crassula connata
Crataegus phippsii
Crepis bakeri ssp. idahoensis
Crumia latifolia
Cryptantha gracilis
Cryptantha leucophaea
Cryptantha rostellata
Cryptantha scoparia
Cryptantha spiculifera
Cryptogramma stelleri
Cuscuta denticulata
Cusickiella douglasii
Cypripedium parviflorum

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F

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H

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Packera porteri
Parnassia fimbriata var. hoodiana
Parnassia kotzebuei
Parnassia palustris var. neogaea
Pedicularis rainierensis
Pediocactus nigrispinus
Pellaea brachyptera
Pellaea breweri
Penstemon barrettiae
Penstemon deustus var. variabilis
Penstemon eriantherus var. whitedii
Penstemon wilcoxii
Perideridia oregana
Petrophytum caespitosum ssp. caespitosum
Petrophytum cinerascens
Phacelia lenta
Phacelia minutissima
Phacelia tetramera
Physaria didymocarpa ssp. didymocarpa
Physaria douglasii ssp. tuplashensis
Pilularia americana
Pityopus californicus
Plantago macrocarpa
Platanthera chorisiana
Platanthera obtusata ssp. obtusata
Poa laxiflora
Poa nervosa
Poa unilateralis ssp. pachypholis
Polemonium carneum
Polemonium pectinatum
Polemonium viscosum
Polyctenium fremontii
Polygonum austiniae
Polygonum parryi
Polystichum californicum
Potamogeton foliosus ssp. fibrillosus
Potamogeton obtusifolius
Potentilla breweri
Potentilla glaucophylla var. perdissecta
Potentilla jepsonii
Potentilla newberryi
Potentilla nivea
Pyrrocoma hirta var. sonchifolia
Pyrrocoma liatriformis

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S

Salix candida
Salix glauca var. villosa
Salix maccalliana
Salix pseudomonticola
Salix sessilifolia
Salix tweedyi
Salix vestita
Samolus parviflorus
Sandbergia perplexa
Sanguisorba menziesii
Sanicula arctopoides
Sanicula marilandica
Saxifraga cernua
Saxifraga hyperborea
Saxifraga tischii
Saxifragopsis fragarioides
Schistostega pennata
Schizachyrium scoparium var. scoparium
Schoenoplectus saximontanus
Sclerolinon digynum
Scouleria marginata
Scribneria bolanderi
Scutellaria angustifolia ssp. micrantha
Sericocarpus oregonensis ssp. oregonensis
Sericocarpus rigidus
Sidalcea hirtipes
Sidalcea nelsoniana
Sidalcea oregana var. calva
Sidalcea virgata
Silene sargentii
Silene seelyi
Silene spaldingii
Sisyrinchium montanum var. montanum
Sisyrinchium sarmentosum
Sisyrinchium septentrionale
Sparganium fluctuans
Spartina pectinata
Spiranthes diluvialis
Spiranthes porrifolia
Stuckenia filiformis ssp. occidentalis
Subularia aquatica var. americana
Sullivantia oregana
Swertia perennis
Symphyotrichum boreale
Symphyotrichum hallii
Symphyotrichum jessicae
Synthyris pinnatifida var. lanuginosa

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