Scirpus pedicellatus


Rhodora 2: 16. 1900.

Common names: Scirpe pédicellé
Synonyms: Scirpus cyperinus var. pedicellatus (Fernald) Schuyler
Treatment appears in FNA Volume 23. Treatment on page 20. Mentioned on page 10, 15, 19, 21.

Plants aggregated in dense tussocks; rhizomes branching, short, tough, fibrous. Culms: fertile ones upright or nearly so; nodes without axillary bulblets. Leaves ca. 8 per culm; sheaths of proximal leaves green or brownish; proximal sheaths and blades with septa few to many, consipuous or inconspicuous; blades 42–77 cm × 5–9 mm. Inflorescences terminal; rays ascending, scabrous throughout or main branches smooth proximally, rays rarely with axillary bulblets; bases of involucral bracts green, brown, or blackish, not glutinous. Spikelets in open cymes, central spikelet of each cyme sessile, others usually pedicellate, spikelets ovoid, 3–9 × 2–3 mm; scales usually pale brown, black pigment absent (or sometimes a little beside distal midrib), oblong-elliptic, 1.4–1.8 mm, rounded or weakly mucronate, mucro (if present) to 0.1 mm. Flowers: perianth bristles persistent, 6, slender, contorted, much longer than achene, smooth, projecting beyond scales, mature inflorescence appearing woolly; styles 3-fid. Achenes whitish, elliptic or obovate in outline, plumply trigonous or plano-convex, 0.7–0.9  0.4–0.5 mm. 2n = 68.

Phenology: Fruiting summer (mid or late Jul).
Habitat: Usually in lowland marshes in stream valleys, edges of bogs, boggy meadows, and wet sandy shorelines
Elevation: 0–500 m


V23 19-distribution-map.jpg

N.B., N.S., Ont., Que., Conn., Ill., Ind., Iowa, Maine, Mass., Mich., Minn., Mo., N.H., N.J., N.Y., Ohio, Pa., R.I., Vt., Wis.


Scirpus pedicellatus often hybridizes with S. cyperinus and forms hybrid swarms.

Selected References


Lower Taxa

... more about "Scirpus pedicellatus"
Alan T. Whittemore +  and Alfred E. Schuyler +
Fernald +
Scirpe pédicellé +
N.B. +, N.S. +, Ont. +, Que. +, Conn. +, Ill. +, Ind. +, Iowa +, Maine +, Mass. +, Mich. +, Minn. +, Mo. +, N.H. +, N.J. +, N.Y. +, Ohio +, Pa. +, R.I. +, Vt. +  and Wis. +
0–500 m +
Usually in lowland marshes in stream valleys, edges of bogs, boggy meadows, and wet sandy shorelines +
Fruiting summer (mid or late Jul). +
Illustrated +  and Endemic +
Scirpus cyperinus var. pedicellatus +
Scirpus pedicellatus +
species +