Carex circinata

C. A. Meyer

Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans 1: 209, plate 6. 1831.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 528. Mentioned on page 529.

Plants cespitose, short-rhizomatous. Culms 5–25 cm. Leaves involute, curved, 0.5 mm wide. Spike androgynous. Pistillate scales shorter to longer than and as wide as to wider than perigynia, often covering all but beak, margins hyaline, apex obtuse to acute or, occasionally, cuspidate. Perigynia 4.5–6 mm, distal margins finely serrulate; beak tip hyaline.


Phenology: Fruiting Jun–Aug.
Habitat: Cliffs, talus slopes, rocky knolls
Elevation: 60–1000 m

Discussion

W. J. Cody (1996) mapped one locality for Carex circinata in Yukon and also stated that its occurrence is disputed. Carex circinata is unexpectedly absent from the adjacent Russian Far East, where a close relative, C. hakkodensis Franchet, occurs (T. V. Egorova 1999).

Selected References

None.

Lower Taxa

None.

"wider" is not a number.

... more about "Carex circinata"
trigonous +
smaller +
David F. Murray +
C. A. Meyer +
shortened +
tapering +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
v--shaped +  and thread-like +
0mm;20mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
pale-brown +
round +  and trigonous +
5 cm50 mm <br />0.05 m <br /> (25 cm250 mm <br />0.25 m <br />) +
B.C. +, Alaska +  and Wash. +
60–1000 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Cliffs, talus slopes, rocky knolls +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.5 cm5 mm <br />0.005 m <br /> (?) +
with (1-)3-6(-30) bristles and/or scales +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Fruiting Jun–Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans +
adventitious +
persistent +
basal +  and proximal +
2-keeled +
shorter to longer than and as-wide-as to wider than perigynia +
cylindric +
Illustrated +  and Endemic +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex circinata +
Carex sect. Circinatae +
species +
plant +  and cespitose +