Carex sect. Rupestres

(Tuckerman) Meinschausen

Trudy Imp. S.-Peterburgsk. Bot. Sada 18: 283. 1901.

Basionym: Rupestres Tuckerman Enum. Meth. Caric., 8. 1843
Treatment appears in FNA Volume 23.

Plants loosely cespitose, long-rhizomatous. Culms red-purple at base. Leaves: basal sheaths not fibrous; sheath fronts, not red dotted, membranous; blades V-shaped in cross-section when young, glabrous, basal circinnate distally. Inflorescence a single spike; bractless; spike androgynous. Proximal pistillate scales less than 10 mm, apex acute or obtuse, sometimes mucronate. Perigynia ascending, pale yellowbrown with dark tip, veinless or obscurely veined with 2 prominent marginal veins, narrowly obovate, trigonous in cross-section, base tapering, apex to abrupt beak, glabrous; beak 0.2–0.6 mm, orifice truncate. Stigmas 3. Achenes trigonous, almost as large as bodies of perigynia; style deciduous.

Distribution

North America, Eurasia

Discussion

Species 2 (1 in the flora).

The circumscription followed here is that proposed by T. V. Egorova (1999).

Selected References

None.

Lower Taxa

"shortened" is not a number.

... more about "Carex sect. Rupestres"
trigonous +
mucronate;obtuse;acute +
Peter W. Ball +
(Tuckerman) Meinschausen +
tapering +
Rupestres +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
v--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 +
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 +
not red dotted +
basal +  and cauline +
membranous +
with (1-)3-6(-30) bristles and/or scales +
veined +  and veinless +
pale yellowbrown +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
Trudy Imp. S.-Peterburgsk. Bot. Sada +
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. Rupestres +
section +
plant +  and cespitose +