Sagittaria brevirostra Mack. & Bush

  • Authority

    Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

  • Family

    Alismataceae

  • Scientific Name

    Sagittaria brevirostra Mack. & Bush

  • Description

    Species Description - Main portion of the lf-blade mostly lanceolate, sometimes broader, mostly 5–20 × 2–8 cm, 0.8–8 times as long as wide; petiole corrugated in x-section, at least in the lower half; infl often branched at the lowest whorl; fls in 5–12 whorls; bracts 1.5–4 cm, equaling or longer than the 1.3–2.5 cm pedicels, stramineous, papery-firm, broad-based and long-attenuate; fruiting head usually oblate-spheroidal; receptacle not markedly echinate; achenes 2–3 mm, lacking resin-ducts, with a short wing (not extending into the beak) on one or both faces, or the faces wingless; dorsal wing entire to crenulate, usually truncate at the top and not confluent with the beak; ventral wing narrower and confluent with the beak; beak 0.4–1.7 mm; 2n=22; otherwise much like no. 4 [Sagittaria engelmanniana J. G. Sm]. In circumneutral to somewhat alkaline shallow water of ponds and swamps; O. and Mich. to Minn. and S.D., s. to Tenn., Ala., and Tex. July–Oct. (S. engelmanniana var. b.)

  • Common Names

    midwestern arrow-head