Browse Plants by Type: 3 or 6 petals
Rumex venosus
winged dock
Sagittaria cuneata
arum-leaf arrowhead
Sagittaria latifolia
broadleaf arrowhead
Scoliopus hallii
Oregon fetid adder's tongue
Sisyrinchium bellum
blue-eyed grass
Sisyrinchium californicum
golden-eyed grass
Sisyrinchium idahoense
Idaho blue-eyed grass
Sparganium natans
small bur-reed
Spiranthes porrifolia
western ladies' tresses
Spiranthes romanzoffiana
hooded ladies' tresses
Stenanthium occidentale
mountainbells
Streptopus amplexifolius
clasping twisted stalk
Streptopus lanceolatus var. curvipes
rosy twisted stalk
Tofieldia glutinosa
western false asphodel
Trillium albidum
giant white wakerobin
Trillium kurabayashii
giant purple wakerobin
Trillium ovatum
western trillium
Trillium petiolatum
roundleaf trillium
Trillium rivale
brook wakerobin
Triteleia grandiflora var. grandiflora
large-flowered brodiaea