Flora of North America species comparison

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Carex debilis var. debilis
Photo is of parent taxon

white edge sedge
Perigynia

fusiform, 5.5–8.7 mm, apex tapering gradually to elongate beak, nearly 1/2 length of perigynium.
Lateral

spikes pistillate, perigynia overlapping, attached 3–6 mm apart.
Pistillate

scales with hyaline margins white or pale, apex usually blunt to acute, rarely cuspidate.
2n

= 52, 54, 55, 56.

Carex debilis var. debilis
Phenology Fruiting early–mid summer.
Habitat Edges, openings, paths and stream banks in mesic deciduous forest, floodplain forests, meadows, wet prairies, and roadsides, usually on soils with pH below 6
Elevation less tham 500 m (less thaft 1600 ft)
Distribution
from FNA
AL; AR; CT; DC; DE; FL; GA; IL; IN; KY; LA; MA; MD; MI; MO; MS; NC; NJ; NY; OH; OK; PA; SC; TN; TX; VA; WV
[BONAP county map]
Discussion

Most specimens of Carex debilis var. debilis have glabrous perigynia, but those with pubescent perigynia occur sporadically through the eastern part of its range, usually in mixed populations with the glabrous form. This southern variety extends north along the coastal plain to Nantucket Island, Massachusetts and occurs sporadically in Michigan and Ohio along with other coastal plain disjuncts. Occasional sterile hybrids with C. venusta have been confirmed in Florida, North Carolina, and New Jersey and observed in South Carolina and Virginia.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 23, p. 469.
Parent taxa Cyperaceae > Carex > sect. Hymenochlaenae > Carex debilis
Sibling taxa
C. debilis var. rudgei
Synonyms C. debilis var. intercursa, C. debilis var. puesa
Name authority unknown
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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