Cyperus filiculmis - (image 1 of 3)
Taxonomy
Family: Cyperaceae
Habitat
Dunes, pine barrens, disturbed sandy places.
Associates
Distribution
Southeast MD and southeast VA to FL and TX. Mostly on the coastal plain.
Morphology
Perennial to 50 cm from short, tuberous-knotty rhizomes. Leaves gray-green, 1-2.5 mm wide. Heads stramineous to yellowish-brown; spikelets 2-3 mm wide, dentate, radiating in spherical or hemispherical, usually solitary heads; scales free at the tips, not strongly overlapping; anthers 0.6-1 mm. Achene narrow, a third to nearly half as wide as long.
Notes
Flowers June to September
Wetland Indicator: Facultative Upland -
These plants were photographed in northeastern IL near Lake Michigan and may be better regarded as C. lupulinis (Spreng.) Marcks ssp. macilentus (Fern.) Marcks, which has scales that rarely exceed 2.5 mm long.
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.
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Michael Hough © 2009 |