Taxonomy
Family: Cyperaceae
Section Leptocephalae
Habitat
Bogs and calcareous fens, swamps, wet soil.
Associates
Distribution
Labrador to AK, south to FL, TX, and CA.
Morphology
Stems slender, to 60 cm, clustered on slender, branching rhizomes; leaves shorter than stems, more or less flat, to 1.2 mm wide; spikes 1 per stem, 0.5-1.5 cm long, terminal staminate part often short, rachilla lacking; pistillate scales obtuse to acute or short-awned, the lowest sometimes short-awned and exceeding its perigynium, otherwise shorter than the perigynia; perigynia not filled by the achene, 1-10, to 4.5 mm long, appressed-ascending, often remote, membranaceous, elliptic to lance-elliptic, often narrow and spongy at the base, beakless, with 2 marginal nerves and many finer nerves; achene trigonous, 1.3-1.8 mm long; stigmas 3.
Notes
Fruiting May to August
Wetland indicator: OBL
Also called Bristle-stalked Sedge.
References
Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of
Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY
Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.
© Michael Hough 2010 |