Carex debilis var. rudgei
carex de rudge, white edge sedge
lance-ellipsoid, 5–6.2 mm, apex rather abruptly narrowed to beaked;
beak 5–6.2 mm.
spikes pistillate, perigynia only slightly overlapping, attached 2–9 mm apart.
scales with hyaline margins usually suffused or streaked with dark red or chestnut, acute to often cuspidate.
= 50, 52, 54, 56, 60.
Carex debilis var. rudgei
Most collections of the northern variety, Carex debilis var. rudgei, have glabrous perigynia, but those with pubescent perigynia can be found in the southeastern part of the range, especially in the mountains. The two forms often grow together in the same population. Hybrids with both C. virescens and C. swanii occur sporadically throughout their common range. A rare hybrid with C. castanea occurs in the northern part of its range.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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