Carex cristatella Britton - Crested Oval Sedge


 

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Carex cristatella - (image 1 of 5)

 

Taxonomy

Family: Cyperaceae

 

Section Ovales

Habitat

Low open ground of  swamps, wet meadows, shores.

Associates

 

Distribution

NH and western Quebec to VA, west to ND, NE, and eastern KS.

Morphology

Tufted perennial to 90 cm; aphyllopodic. Leaves 3-7 mm wide, shorter than or equaling the stout stems, sheaths ventrally green-veins nearly to the summit. Spikes 6-12, gynaecandrous, to 8 mm, subglobose to ovoid, sessile in a crowded spike or head to 2-4 cm; lowest bract prolonged but shorter than the inflorescence. Pistillate scales lanceolate, shorter and narrower than perigynia, acute, hylaine with a green midvein; perigynia crowded, spreading or slightly recurved, oblong, finely nerved, to 3.9 mm long and 2-3 times as long as wide, the winged margin broadest above the achene and tapering to the base. Achene lenticular, 1.5 mm long and 0.5 mm wide; stigmas 2.

Notes

Flowers June to August

Wetland indicator: FACW

Carex cristatella has a perigynium that is not winged to the base and has a stiffly spreading to recurved beak. The perigynium of Carex bebbii is winged to the base and has a stiffly ascending beak.

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 2010