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Montana Field Guide

Montana Field Guides

Fringed Water-plantain - Damasonium californicum
Other Names:  Machaerocarpus californicus

Potential Species of Concern
Native Species

Global Rank: G4
State Rank: SH
* (see State Rank Reason below)

Agency Status
MNPS Threat Rank:

External Links

State Rank Reason (see State Rank above)
Collected once in Montana along the Kootenai river near Rexford prior to the creation of Lake Koocanusa.
  • Details on Status Ranking and Review
    Fringed Water-plantain (Damasonium californicum) Conservation Status Review
    Review Date =
General Description
Cormose. Scapes 20–40 cm. Leaf blades lanceolate to narrowly elliptic, 3–12 cm long. Inflorescence a raceme of 1 to 4 whorls; bracts ovate, 4–10 mm long. Flowers unisexual, female below the male; sepals oblong to ovate, reflexed, 4–5 mm long; petals rhombic, white with a yellow, clawed base, 7–10 mm long, erose-margined; stamens 6; pistils 6 to 10. Achenes compressed-obovoid 3–6 mm long with a beak 3–6 mm long, spreading at maturity, tightly packed in a wheel-like head (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
MT, OR, ID, NV, CA. Collected once in Lincoln County at a site inundated by Lake Koocanusa (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).


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Citation for data on this website:
Fringed Water-plantain — Damasonium californicum.  Montana Field Guide.  .  Retrieved on , from