Sagittaria subulata (L.) Buchenau
-
Authority
Bogin, Clifford. 1955. Revision of the genus Sagittaria (Alismataceae). Mem. New York Bot. Gard. 9 (2): 179-233.
-
Family
Alismataceae
-
Scientific Name
-
Description
Species Description - Annual, or perennating by runners and corms. Submerged or tidal plant. Leaves reduced to phyllodia 5-90 cm or more long, 0.1-1.4 cm wide, the floating ends occasionally widened into more or less distinct lanceolate to ovate blades 2-6 x 0.5-2.5 cm, rarely cordate or sagittate. Scapes 5-90 cm long or longer, typically simple with 1-10 whorls of flowers, rarely branching from the lowest whorl. Bracts typically connate at the base, sheathing, 0.2-0.4 cm long, somewhat scarious margined, the caudate ends to 3 cm long, occasionally spathe-like, soon evanescent. Pistillate flowers with variously thickened recurved pedicels 1-15 cm long; sepals 0.2-0.5 cm long, widely spreading at maturity; petals white, ca. twice as long as the sepals. Staminate flowers with divaricate to ascending pedicels 1-3.5 cm long; stamens 7 or 9-15, the glabrous, subulate filaments 0.6-1.3 mm long, the oblong anthers 0.4-0.8 cm long. Mature pistillate heads 0.5-0.7 cm in diameter; achenes obovate, plump, 1.5-2 x 0.9-1.4 mm, the narrow wings slightly crenate dorsally, the faces adorned with 1-3 crenate wings, the subulate recurving beak 0.15-0.35 mm long, obliquely inserted.