Carex sect. Nardinae

(Tuckerman) Mackenzie in N. L. Britton et al.

in N. L. Britton et al., N. Amer. Fl. 18: 21. 1931.

Basionym: Nardinae Tuckerman Enum. Meth. Caric., 8. 1844
Treatment appears in FNA Volume 23.

Plants cespitose, short-rhizomatous. Culms yellowbrown at base. Leaves: basal sheaths not or slightly fibrous, long-persistent; sheath fronts membranous; blades filiform, glabrous. Inflorescence a single spike; bracts absent; spike androgynous. Pistillate scales less than 10 mm, apex obtuse to subacute. Perigynia erect or ascending, obscurely veined, substipitate, obovate or elliptic, planoconvex, 3–5 mm, 1.5–2.5 times as long as wide, base ± tapering, margins acutely angled, apex gradually or abruptly beaked, glabrous; beak 0.2–5 mm, with abaxial suture, emarginate. Stigmas 2 (–3). Achenes biconvex or, occasionally, trigonous, smaller than the bodies of perigynia; style deciduous.

Distribution

North America, Eurasia

Discussion

Species 2 (1 in the flora).

Selected References

None.

Lower Taxa

... more about "Carex sect. Nardinae"
trigonous;,;biconvex +
smaller +
David F. Murray +
(Tuckerman) Mackenzie in N. L. Britton et al. +
shortened +
long-persistent +
tapering +
Nardinae +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
filiform +
0mm;20mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
yellowbrown +
round +  and trigonous +
North America +  and Eurasia +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
with (1-)3-6(-30) bristles and/or scales +
substipitate +  and veined +
ascending +  and erect +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
in N. L. Britton et al., N. Amer. Fl. +
adventitious +
basal +  and proximal +
2-keeled +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
cylindric +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex sect. Nardinae +
section +
plant +  and cespitose +