Carex unilateralis

Mackenzie

Erythea 8: 43. 1922.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 347. Mentioned on page 332, 340.

Plants densely cespitose. Culms 35–75 cm. Leaves: sheath summits U-shaped, sometimes prolonged to 2 mm beyond collar; distal ligules 2.5–8 mm; blades 3–5 per fertile culm; 15–45 cm × 2–3 (–4) mm. Inflorescences ascending, dense, green to gold or brown, (1–) 1.4–2.5 cm × 9–17 mm; proximal internode 1.5–4 mm; 2d internode 1–4 mm; proximal 2–3 bracts erect to ascending, leaflike, the proximal longer than inflorescence, often more than 2 mm wide, base ± surrounding culm. Spikes 5–11, ± individually indistinct, ovoid to broadly ovoid, 7–13 × 5–9 mm, base rounded to acute, apex truncate to acute. Pistillate scales pale gold to redbrown, with pale to green midstripe, lanceolate to ovate, 3.3–4.8 mm, shorter and narrower than perigynia, margin sometimes white, 0.1–0.2 mm wide, apex acuminate to awned. Perigynia ascending to ascending-spreading, green, gold, or sometimes coppery, conspicuously 0–11-veined abaxially, conspicuously 0–8-veined adaxially, ovate to lanceolate, usually flat, 3.5–5 × 1.3–1.75 mm, 0.3–0.5 mm thick, margin flat, including wing 0.2–0.3 mm wide; beak usually gold or redbrown at tip, usually flat, winged, ± ciliate-serrulate or, sometimes, cylindric, unwinged, ± entire for 0.5–0.6 mm, (1.4–) 1.7–2.5 mm, abaxial suture inconspicuous or with white margin, distance from beak tip to achene. Achenes stipitate, ovate to obovate, (1.2–) 1.5–1.9 × 0.75–1 (–1.2) mm, 0.3–0.4 mm thick.


Phenology: Fruiting late spring–summer.
Habitat: Seasonally wet places, 0–1000 m

Distribution

V23 598-distribution-map.jpg

B.C., Calif., Oreg., Wash.

Discussion

Carex unilateralis intergrades with C. athrostachya.

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 unilateralis"
with white margin +  and inconspicuous +
ovate;obovate +
smaller +
0.3mm +  and 0.4mm +
bidentatate +
papillose +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
Mackenzie +
shortened +
persistent +
rounded +  and acute +
not enlarged +
unwinged +  and winged +
entire +, , +  and ciliate-serrulate +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
cylindric +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
3 (?) +  and 5 (?) +
v--shaped +
0mm;20mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
erect +  and ascending +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
round +  and trigonous +
35 cm350 mm <br />0.35 m <br /> (75 cm750 mm <br />0.75 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
B.C. +, Calif. +, Oreg. +  and Wash. +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Seasonally wet places, 0–1000 m +
1 cm10 mm <br />0.01 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
green +  and gold or brown +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
not prophyllate +, sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
15cm +  and 45cm +
basal +  and cauline +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.2mm +  and 0.3mm +
pale +  and green +
with (1-)3-6(-30) bristles and/or scales +
0-8-veined +  and 0-11-veined +
coppery +, gold +  and green +
ascending +  and ascending-spreading +
0.3mm +  and 0.5mm +
Fruiting late spring–summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
sheathless +  and bristlelike +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
adventitious +
pale gold +  and redbrown +
basal +  and proximal +
lanceolate;ovate +
0.33 cm3.3 mm <br />0.0033 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
shorter and narrower +
herbaceous +  and membranous +
not differentiated +
cylindric +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Illustrated +  and Endemic +
0.7 cm7 mm <br />0.007 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
ovoid;broadly ovoid +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +  and persistent +
2-3(-4)-fid +
Carex unilateralis +
Carex sect. Ovales +
species +
plant +  and cespitose +