Najas marina L.

• Authority

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

• Family

  Hydrocharitaceae

• Scientific Name

  Najas marina L.

• Description

  Species Description - Dioecious; stems 0.5–4.5 dm, 0.5–4 mm thick, often prickly; lvs 0.5–4 cm × 0.5–4.5 mm, spreading or ascending, prickly along the midvein beneath, coarsely serrate with 8–13 multicellular teeth projecting 0.5–1 mm on each side; anthers dithecal, with 4 microsporangia; seeds 2.2–4.5 mm, reddish-brown, ovoid, pitted, with irregular areolae; 2n=12. Brackish or highly alkaline water of ponds and lakes; irregularly cosmop.; in our range from N.Y. and Pa. to Wis., Ill., and Minn.

• Common Names

  alkaline water-nymph