Carex sect. Glaucescentes

Reznicek

Novon 11: 457. 2001.

Synonyms: Carex sect. Pendulinae Fries
Treatment appears in FNA Volume 23.
Revision as of 01:06, 30 July 2020 by imported>Volume Importer
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Plants densely cespitose, in large clumps, short-rhizomatous; rhizomes brown or black, without yellowbrown felty covering. Culms reddish purple at base. Leaves: basal sheaths sometimes fibrous; sheath fronts reddish or green, veined, herbaceous; blades with 2 lateral adaxial veins more prominent than midvein, M-shaped in cross-section when young, glabrous or scabrous, strongly glaucous. Inflorescences racemose, with 5–8 spikes; proximal bracts leaflike, long-sheathing, sheath shorter than diameter of stem; lateral spikes pistillate or some androgynous, pendent, pedunculate, prophyllate; terminal spikes usually staminate. Proximal pistillate scales with apex acute to acuminate or awned, awn to 3.5 mm; staminate scales awned. Perigynia divergent or ascending, weakly to strongly veined on faces, with 2 strong marginal veins, usually sessile, elliptic or ovate, trigonous in cross-section, base tapering, apex abruptly beaked, glabrous, papillose; beak less than 5 mm, erose-ciliate to very shortly bidentate. Stigmas 3. Achenes trigonous, smaller than bodies of perigynia; style deciduous.

Distribution

Southeastern coastal plain, interior low plateau, and Piedmont plateau provinces of North America

Discussion

Species 3 (3 in the flora).

Selected References

None.

Key

1 Perigynia prominently 6–8-veined; pistillate scale apex acute. Carex joorii
1 Perigynia indistinctly veined or veinless; pistillate scales retuse. > 2
2 Faces of perigynia weakly veined; achenes rhomboid, length and width equal; leaves glabrous or sparsely scabrous on margins and abaxial surface. Carex verrucosa
2 Faces of the perigynia veinless or indistinctly 3–4-veined on each face; achenes ellipsoid, longer than wide; leaves strongly scabrous on margins and abaxial surface. Carex glaucescens

"shortened" is not a number.

... more about "Carex sect. Glaucescentes"
trigonous +
smaller +
papillose +
acute;acuminate or awned +
Lisa A. Standley +
Reznicek +
0 cm0 mm <br />0 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
tapering +
bidentate +  and erose-ciliate to very +
0 cm0 mm <br />0 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
more prominent +
m--shaped +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
glaucous +, scabrous +  and glabrous +
reddish purple +
round +  and trigonous +
Southeastern coastal plain +, interior low plateau +  and and Piedmont plateau provinces of North America +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
prophyllate +, pedunculate +, some +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
with (1-)3-6(-30) bristles and/or scales +
sessile +  and veined +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
long-sheathing +  and leaflike +
black +  and brown +
adventitious +
basal +  and proximal +
2-keeled +
cylindric +
1 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex sect. Pendulinae +
Carex sect. Glaucescentes +
section +
plant +  and cespitose +