Sagittaria graminea Michx.
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Authority
Bogin, Clifford. 1955. Revision of the genus Sagittaria (Alismataceae). Mem. New York Bot. Gard. 9 (2): 179-233.
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Family
Alismataceae
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Scientific Name
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Description
Species Description - Annual, or perennial with runners and corms and/or horizontal rhizomes. Leaves emersed or submerged, the emersed blades linear to ovate, 1.5 X 0.5-10 cm, rarely with basal lobes, the submerged leaves modified into strap-shaped or spongy terete phyllodia to 50 cm long and to 2.5 cm wide, the petioles 2-55 cm long. Scapes 5-120 cm long, simple, with 2-12 whorls of flowers, or rarely branching from the lower whorls. Bracts scarcely to fully connate, the free ends 0.2-1.5 cm long, occasionally obsolete. Pistillate flowers with ascending pedicels 0.5-6.5 cm long (in one variety the pedicels recurved and somewhat thickened); sepals 0.3-0.6(-0.8) cm long, reflexed at maturity; petals white or pink, ca. twice as long as the sepals. Staminate flowers with 12-°° stamens, the dilated pubescent filaments 0.4-1.5 mm long, the oblong anthers 0.6-1.7 mm long. Mature receptacle 0.5-1.5 cm in diameter; achenes oblong to obovate, 1.2-3 x 0.8-1.8 mm, the dorsal wings 0.15-0.6 mm wide, the ventral wings only half as wide, the faces adorned with 1-3 wings, these occasionally crenate or absent, the obliquely inserted beak 0.1-0.4 mm long, occasionally longer or obsolete.