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Montana Field Guide

Montana Field Guides

Dotted Watermeal - Wolffia borealis

Status Under Review
Undetermined Origin

Global Rank: G5
State Rank: SU

Agency Status
MNPS Threat Rank:

External Links

General Description
Thallus elliptic from above, often acute to obtuse at the end, the upper surface flattened and emersed, the pointed apical end raised, brown-punctate on both sides (when dry) and dark green above (Kaul, 1986, Flora of the Great Plains).

Range Comments
Across much of Canada and U.S., although mostly absent in southwest and southeast (Kartesz in prep. 2012).

Found in quiet waters.

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Citation for data on this website:
Dotted Watermeal — Wolffia borealis.  Montana Field Guide.  .  Retrieved on , from