Najas guadalupensis subsp. guadalupensis
Stems 11–75 cm × 0.1–0.8 mm. Leaves 0.3–2.8 mm; sheath 1–1.9 mm wide, apex rounded; blade 0.2–1.8 mm wide, teeth 50–100 per side, invisible to unaided eye, apex acute to mucronate. Flowers 1–3 per axil. Staminate flowers 1.5–2.5 mm; anther 4-loculed. Pistillate flowers 1.5–2 mm. Seeds 1.2–2.5 × 0.4–0.6 mm; aeroleareoles of testa in 20 longitudinal rows. 2n = 24.
Phenology: Flowering early summer–fall.
Habitat: Lakes, rivers, and canals
Elevation: 0–1500 m
Distribution
Alta., Ont., Que., Ala., Ariz., Ark., Calif., Colo., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., Nev., N.H., N.J., N.Y., N.C., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Mexico, West Indies, Central America, South America
Discussion
Selected References
None.
Lower Taxa
"elongating" is not a number.