3 species
1 subspecies and varieties
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Cicuta bulbiferabulblet-bearing water-hemlock, bulbous water-hemlock
Distribution: British Columbia to southern Oregon, east to Newfoundland and Virginia,
Habitat: Marshes, bogs, wet meadows and standing water, lowlands to mountain valleys; uncommon in the Pacific Northwest.
Origin: Native
Flowers: August - September
Cicuta douglasiiDouglas' water-hemlock, western water-hemlock
Distribution: Widely distributed throughout Washington; British Columbia south to Oregon, east to Montana.
Habitat: Marshes and wet areas, low to moderate elevations in the mountains.
Origin: Native
Flowers: June-August
Cicuta maculataspotted water-hemlock
Distribution: Known from historic collections in the Spokane area; widely distributed throughout much of North America.
Habitat: Marshes and wet areas.
Origin: Native
Flowers: June-August
var. angustifolia – spotted cowbane