Perennial, aquatic herb from weak rhizomes; stems floating, 20-60 cm tall.
Alternate, limp, unkeeled, flat, floating, linear with sheathing bases, 40-60 cm long, 2-8 mm wide.
Inflorescence simple, of 1 to 3 female heads below and 1 male head above, the heads globe-shaped, the female heads 0.5-1.2 cm wide, axillary, sometimes borne above the leaf axils, usually unstalked or sometimes stalked below; perianth segments 6, attached near the top of the flower stalk; stigma 1; anthers less than 0.8 mm long.
Achenes, 2-4 mm long, barely or not constricted at the middle, beaked, the beaks 0.5-1.5 mm long, curved; seeds 1.
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
||Value / Class
Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
of field plots
species was recorded in:
BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in
|CDF(4), CWH(6), ICH(1), IDF(2), SBS(1)|
Source: Klinkenberg 2013
Synonyms and Alternate Names:
Sparganium minimum (L.) Fr., nom. illeg.
Sparganium minimum Wallr.
Sparganium natans var. minimum L.