Spartina patens (Aiton) Muhl.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Culms slender, stiff and wiry, 3–10 dm, on long slender rhizomes; lvs 4–30 cm, involute (or flat at base), mostly 1–4 mm wide (when flattened); spikes mostly 2–7, 1.5–5 cm, ascending, not appressed; spikelets closely imbricate, scabro-ciliate on the keels; first glume linear, mucronate, 2–6 mm; second glume narrowly lanceolate, long-acuminate or almost aristate, 7.5–13 mm; lemma obtuse, 5.5–8 mm; 2n=28, 42, 56. Salt-marshes and wet beaches; Que. to Fla. and Tex.; also in saline situations inland in c. N.Y., s. Ont., and e. Mich. (S. juncea) The principal source of eastern salt-hay.