Carex stenoptila

F. J. Hermann

Leafl. W. Bot. 4: 194. 1945.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 351. Mentioned on page 343, 350.

Plants densely cespitose. Culms with angles smooth proximally, 17–70 cm. Leaves: sheaths adaxially white-hyaline, often tinged brown distally, summit usually U-shaped, sometimes prolonged to 1.5 mm beyond collar; distal ligules 0.5–1.5 (–3) mm; blades (2–) 3–4 per fertile culm, 8–20 cm × 2.2–3.8 mm. Inflorescences dense, dark or chestnut-brown or brown and green (gold), 1.2–2 (–2.5) cm × 8–15 mm; proximal internode 1–3 (–4) mm; 2d internode 0.5–3 mm; proximal bracts usually bristlelike, shorter than inflorescences. Spikes 5–9 (–12), densely aggregated, individually indistinct, ovoid or broadly ovoid, 7.5–11 × 3.5–6.5 mm, base rounded to attenuate, apex truncate to tapered. Pistillate scales gold to brown, with pale to gold midstripe, lanceolate to ovate, 3.1–3.8 mm, shorter than and narrower than or as wide as perigynia, margin usually not white, apex obtuse to long-acute. Perigynia appressed-ascending to ascending, green to straw colored, conspicuously 6–8-veined abaxially, conspicuously 3–4 (–6) -veined adaxially, at least 3 veins longer than achene, narrowly lanceolate to lanceolate, biconvex, 4–5.1 × 1–1.3 (–1.5) mm, (0.4–) 0.5–0.55 mm thick, margin flat, including wing 0.1–0.25 mm wide, ciliate-serrulate at least on distal body, pithlike tissue usually present in proximal perigynium walls; beak usually dark-brown at tip, cylindric, unwinged, ± entire for 0.5–0.9 mm, abaxial suture inconspicuous or with white margin, distance from beak tip to achene 2.2–3.1 mm. Achenes narrowly elliptic to oblong, (1.1–) 1.4–1.8 × 0.6–0.9 mm, 0.3–0.5 mm thick.


Phenology: Fruiting late summer.
Habitat: Open rocky places, coniferous woods
Elevation: 2400–2900 m

Discussion

Selected References

None.

Lower Taxa

None.

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

... more about "Carex stenoptila"
with white margin +  and inconspicuous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
narrowly elliptic;oblong +
smaller +
0.3mm +  and 0.5mm +
bidentatate +
papillose +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
F. J. Hermann +
shortened +
persistent +
rounded +  and attenuate +
not enlarged +
cylindric +
8 cm80 mm <br />0.08 m <br /> (20 cm200 mm <br />0.2 m <br />) +
3 (?) +  and 4 (?) +
v--shaped +
2.2mm;3.8mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
round +  and trigonous +
17 cm170 mm <br />0.17 m <br /> (70 cm700 mm <br />0.7 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Colo. +, Mont. +, Utah +  and Wyo. +
2400–2900 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Open rocky places, coniferous woods +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
brown and green +, chestnut-brown +  and dark +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
not prophyllate +, sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.1mm +  and 0.25mm +
pale +  and gold +
with (1-)3-6(-30) bristles and/or scales +
3-4(-6)-veined +  and 6-8-veined +
green +  and straw colored +
appressed-ascending +  and ascending +
Fruiting late summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Leafl. W. Bot. +
adventitious +
gold +  and brown +
basal +  and proximal +
lanceolate;ovate +
0.31 cm3.1 mm <br />0.0031 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
herbaceous +  and membranous +
not differentiated +
cylindric +
Illustrated +  and Endemic +
0.75 cm7.5 mm <br />0.0075 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
ovoid;ovoid +
0.35 cm3.5 mm <br />0.0035 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 +
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Carex stenoptila +
Carex sect. Ovales +
species +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.055 cm0.55 mm <br />5.5e-4 m <br />) +
plant +  and cespitose +