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Damasonium californicum

Damasonium californicum Torr. ex Benth.

California Damsonium, Fringed Water Plantain

Alismataceae (Water-Plantain Family)

Synonym(s): Machaerocarpus californicus

USDA Symbol: DACA12

USDA Native Status: L48 (N)

Several basal leaves and 1 or few flower stalks with white or pink, fringed flowers often in clusters on whorled branches. This was once considered the sole species in a small western American genus, Machaerocarpus. It has now been placed in a wide-ranging but still small genus, which also occurs in Eurasia and Australia.

Members of the Water-Plantain Family grow in water, in swamps, on muddy banks, or occasionally in wet sand. Each plant has long-petioled leaves in a clump with a flowering stem rising among them. The flowers have 3 green sepals, 3 white or pink-tinged petals, 6 or more stamens, and several pistils. Stamens and pistils may be in separate flowers.


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Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf: Green

Bloom Information

Bloom Color: White
Bloom Time: Apr , May , Jun , Jul , Aug


USA: CA , ID , NV , OR , WA
Native Distribution: Northern half of California and adjacent regions of Oregon and Nevada east to southwestern Idaho.
Native Habitat: Shallow water or mud in open areas.

Growing Conditions

Water Use: High
Light Requirement: Sun
CaCO3 Tolerance: Medium


Conspicuous Flowers: yes

National Wetland Indicator Status

Status: OBL OBL
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Additional resources

USDA: Find Damasonium californicum in USDA Plants
FNA: Find Damasonium californicum in the Flora of North America (if available)
Google: Search Google for Damasonium californicum


Record Modified: 2007-01-01
Research By: TWC Staff

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