3 species
4 subspecies and varieties
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Hydrophyllum capitatumwool breeches, ballhead waterleaf
Distribution: Mostly east of the Cascade summits in Washington; British Columbia south to California, east to Colorado.
Habitat: Somewhat moist open slopes and woodlands, foothills to mid-elevations in the mountains.
Origin: Native
Flowers: March-July
var. capitatum – wool breeches, ballhead waterleaf
var. thompsonii – wool breeches, ballhead waterleaf
Hydrophyllum fendleriFendler's waterleaf
Distribution: Widely distributed throughout much of Washington; British Columbia south to California, east to Utah.
Habitat: Thickets and moist open places, from lowlands to mid elevations in mountains.
Origin: Native
Flowers: May-August
var. albifrons – Fendler's waterleaf
var. fendleri – Fendler's waterleaf
Hydrophyllum tenuipesPacific waterleaf
Distribution: West of the Cascades in Washington; Vancouver Island, British Columbia south to California.
Habitat: Moist woods at lower elevations.
Origin: Native
Flowers: May-July