Scirpus torreyi Olney

• Authority

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

• Family

  Cyperaceae

• Scientific Name

  Scirpus torreyi Olney

• Description

  Species Description - Colonial perennial from soft rhizomes; stems erect, 5–10 dm, sharply 3-angled; lvs several, elongate, often surpassing the culm; bract erect, like a continuation of the culm, 6–15 cm, blunt; spikes 1–4 in a head, light brown, ovoid, 8–15 mm; scales ovate, the greenish midrib excurrent as a short (to 0.5 mm) mucro beyond the tapering or minutely notched body; bristles longer than the achene; style trifid; achene compressed-trigonous, obovoid, 3.2–4 mm including the prominent (0.5+ mm) apiculus; 2n=42, 70. Marshes, muddy shores, and quiet water; N.B. to Man., s. to N.J., Pa., Va. (mts.), Ind., Mo., and Nebr. Fr July–Sept. (Schoenoplectus t.)

• Common Names

  Torrey-threesquare