Blooms: August
Habit: herb
Duration: perennial
Origin: Introduced
Distribution: Introduced across the northern United States from Idaho to Vermont
Habitat: Occasional in ponds and wetlands
Habit: herb
Duration: perennial
Origin: Introduced
Distribution: Introduced across the northern United States from Idaho to Vermont
Habitat: Occasional in ponds and wetlands
Species Description:
General: Plants of fresh water, the stems to 150 cm. long.
Leaves: Leaves linear, to 2.7 m. long, the blade triangular at the base, submersed, emersed or floating.
Flowers: Inflorescence an umbel with 20-25 flowers on a triangular scape up to 150 cm. long; bracts 3, subtending the umbel; pedicles 4-10 cm.; flowers 2-2.5 cm. wide; outer 3 tepals elliptic, 6-7.5 mm. long and 2-2.5 mm. wide; inner 3 tepals oblanceolate, 9-11.5 mm. long and 4.5-6 mm wide; tepals light purple with darker purple veins; stamens 3 pairs opposite outer tepals and 3 opposite inner tepals; pistils pink.
Fruits: Follicles leathery, 1 cm. long.
General: Plants of fresh water, the stems to 150 cm. long.
Leaves: Leaves linear, to 2.7 m. long, the blade triangular at the base, submersed, emersed or floating.
Flowers: Inflorescence an umbel with 20-25 flowers on a triangular scape up to 150 cm. long; bracts 3, subtending the umbel; pedicles 4-10 cm.; flowers 2-2.5 cm. wide; outer 3 tepals elliptic, 6-7.5 mm. long and 2-2.5 mm. wide; inner 3 tepals oblanceolate, 9-11.5 mm. long and 4.5-6 mm wide; tepals light purple with darker purple veins; stamens 3 pairs opposite outer tepals and 3 opposite inner tepals; pistils pink.
Fruits: Follicles leathery, 1 cm. long.
Accepted Name:
Butomus umbellatus L.Synonyms:
Butomus junceus Turcz.
Butomus umbellatus L. f. vallisneriifolius (Sagorski) Glnck
Treated in Flora of the PNW as:
Butomus umbellatus
Additional Resources:
PNW Herbaria Specimens: View list of Butomus umbellatus specimens in the Consortium of Pacific Northwest Herbaria database.
WTU Herbarium Specimens: View list of Butomus umbellatus specimens in the WTU Herbarium database.
Washington Flora Checklist: Butomus umbellatus treatment.
E-Flora BC: Butomus umbellatus atlas page.
CalPhotos: Butomus umbellatus images.
USDA Plants Database: Butomus umbellatus.
Ben Legler, 2004
Ben Legler, 2004
Ben Legler, 2004
Ben Legler, 2004
Ben Legler, 2004
Ben Legler, 2004
Ben Legler, 2004
Ben Legler, 2004
Ben Legler, 2004
Ben Legler, 2004
Ben Legler, 2004
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 WA Native Plant Society |
