Carex chordorrhiza Ehrh. ex L.f. - Creeping Sedge


 

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Carex chordorrhiza - (image 1 of 6)

 

Taxonomy

Family: Cyperaceae

 

Section Chordorrhizae

Habitat

Bogs, poor fens, in sphagnum or shallow water.

Associates

 

Distribution

Circumboreal, south to MA, NY, IN, IA, and MT.

Morphology

Perennial mostly from stems of the prior season though rhizomes present and short, rarely collected; vegetative stems ascending to erect, much elongate (to 120 cm), becoming prostrate, with parts of old leaves persisting; fertile stems 10-30 cm, with 1-3 leaves near the base; blades of fertile stems 1-5 cm, those of the vegetative stems more numerous and much longer, both about 1-2 mm wide; inflorescence 5-12 cm, crowded; spikes 3-8, androgynous; scales broadly ovate, about equaling the perigynia; perigynia 1-5, plump, oblong-ovoid, 2.5-3.5 mm, nearly as thick as wide, strongly many-nerved, obscurely margined; beak emarginate, 1/4 as long as the body; achene thick-lenticular.

Notes

Fruiting June to August

Wetland indicator: OBL

A relatively easy species to identify, the vegetative stems elongate significantly late in the season, fall over, and form roots and shoots from the nodes the following season.

References

Ball, P.W. and A.A. Reznicek. 2002. Carex, In: Flora of North America Editorial Committee, Eds. Flora of North America North of Mexico. Volume 23. Oxford University Press, New York.

 

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