Carex ebenea

Rydberg

Bull. Torrey Bot. Club 28: 266. 1901.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 353. Mentioned on page 343, 345, 350.

Plants densely cespitose. Culms 18–50 cm. Leaves: sheath adaxially white-hyaline, summits U-shaped to rounded, occasionally prolonged to 4 mm beyond collar; distal ligules 0.5–1.5 (–2) mm; blades 3–4 (–6) per fertile culm, 11–26 cm × 2.8–4 mm. Inflorescences dense, dark-brown, 1.5–3 cm × 14–20 mm; proximal internode 1.5–3 mm; 2d internode 1–3.5 mm; proximal bracts scalelike, usually bristlelike, shorter than inflorescences. Spikes (4–) 6–12, aggregated, individually indistinct, ovoid, 9–15 × 4.5–6.5 mm, base and apex acute to rounded. Pistillate scales dark-brown, redbrown, or red-gold, sometimes with green to gold midstripe, ovate, 3.6–4.7 mm, shorter than and narrower or as wide as perigynia, margin gold-hyaline, to 0.3 mm wide, apex acuminate or acute. Perigynia appressed to ascending, green, gold, or brown, conspicuously usually 7–9-veined abaxially, conspicuously 0–5-veined adaxially, veins shorter than achene, lanceolate to ovate, planoconvex, to 5.3–7.1 × 1.1–1.5 mm, 0.4–0.5 mm thick, margin flat, including wing 0.15–0.3 mm wide, ciliate-serrulate at least on distal body; beak dark-brown, sometimes gold-hyaline at tip, cylindric, unwinged, ± entire for 0.9–1.5 mm, dorsal suture inconspicuous or with conspicuous white margin, distance from beak tip to achene 2.9–4 mm. Achenes ovate to obovate, 1.5–1.9 × 0.8–1.1 mm, 0.4–0.5 mm thick. 2n = 84.


Phenology: Fruiting summer.
Habitat: Meadows
Elevation: 2700–3700 m

Distribution

V23 611-distribution-map.jpg

Ariz., Colo., N.Mex., Utah, Wyo.

Discussion

Selected References

None.

Lower Taxa

None.

"+timesaslongasinflorescences" is not declared as a valid unit of measurement for this property."not undefined" is not a number.

... more about "Carex ebenea"
ovate;obovate +
smaller +
0.4mm +  and 0.5mm +
bidentatate +
papillose +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
Rydberg +
shortened +
persistent +
acute +  and rounded +
not enlarged +
cylindric +
11 cm110 mm <br />0.11 m <br /> (26 cm260 mm <br />0.26 m <br />) +
3 (?) +  and 4 (?) +
v--shaped +
2.8mm;4mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
round +  and trigonous +
18 cm180 mm <br />0.18 m <br /> (50 cm500 mm <br />0.5 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Ariz. +, Colo. +, N.Mex. +, Utah +  and Wyo. +
with conspicuous white margin +  and inconspicuous +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
2700–3700 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Meadows +
0.1 cm1 mm <br />0.001 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
not prophyllate +, sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
white +  and gold-hyaline +
conspicuous +
0.15mm +  and 0.3mm +
green +  and gold +
with (1-)3-6(-30) bristles and/or scales +
0-5-veined +  and 7-9-veined +
brown +, gold +  and green +
appressed +  and ascending +
Fruiting summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Bull. Torrey Bot. Club +
adventitious +
red-gold +, redbrown +  and dark-brown +
basal +  and proximal +
0.36 cm3.6 mm <br />0.0036 m <br /> (0.47 cm4.7 mm <br />0.0047 m <br />) +
as-wide-as perigynia;narrower +
herbaceous +  and membranous +
not differentiated +
cylindric +
Illustrated +  and Endemic +
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +  and persistent +
2-3(-4)-fid +
prolonged +
u-shaped +  and rounded +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Carex ebenea +
Carex sect. Ovales +
species +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
plant +  and cespitose +