Carex communis L.H. Bailey - Fibrous-rooted Sedge


 

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Carex communis - (image 1 of 4)

 

Taxonomy

Family: Cyperaceae

 

Section Acrocystis

Habitat

Dry to wet-mesic deciduous or mixed woods in well-drained, often sandy soils.

Associates

 

Distribution

Nova Scotia to MN, south to SC, KY, and AR.

Morphology

Tufted perennial, 20-50 cm, smooth and purplish at the base; stems equaling or surpassing the leaves; main leaves 3-6 mm wide; terminal spike staminate, 4-18 mm; pistillate spikes 2 or 3, more or less sessile, 5-10 mm, the lowest a little removed from the others, but none basal; middle and lower bracts mostly green, but tending to be scarious-lobed at the base; pistillate scales lance-ovate, about as long as the perigynia, obtuse to acuminate, reddish-purple with green, 3-nerved center and narrow hylaine margins; perigynia 3-10, 2.5-4 mm, the body subglobose above a stipe-like base, 2-keeled, finely hairy, abruptly prolonged into a slender beak 0.5-1 mm; achene rounded-trigonous.

Notes

Fruiting late April to June

Wetland indicator: NA

Differs from similar species, such as C. pensylvanica, by the absence elongate rhizomes (plants therefore cespitose) and the presence of wider leaves (typically more than 3 mm wide).

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

 


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Michael Hough 2018