Carex multicostata

Mackenzie

Bull. Torrey Bot. Club 43: 604. 1917.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 377. Mentioned on page 343, 375, 378.

Plants densely cespitose. Culms 14–110 cm. Leaves: sheaths adaxially white-hyaline, summits U-shaped to rounded, often prolonged to 3 mm beyond collar; distal ligules (1.5–) 2–3.5 (–5) mm; blades 3–4 (–5) per fertile culm, 8–25 cm × (2–) 3–5 mm. Inflorescences dense, brown or gold, usually ± triangular, 1.6–3 cm × 12–20 mm; proximal internode 3–5.5 mm; 2d internode 1.5–5 mm; proximal bracts scalelike or bristlelike, shorter than inflorescences. Spikes 4–6 (–10), densely aggregated or, sometimes, proximal 1 distant, narrowly to broadly ovoid, (8.5–) 10–12 × 6–11 mm, base rounded to attenuate, apex truncate to acute. Pistillate scales gold or light-redbrown, often with pale or green midstripe, ovate to lanceolate, (3.2–) 3.9–4.8 mm, longer and narrower than perignyia, margin white, 0.1–0.5 mm wide, apex acuminate. Perigynia ascending to ascending-spreading, green-and-white, gold, or light-brown, conspicuously (8–) 10–17-veined abaxially, conspicuously (0–) 4–12-veined adaxially, at least 3 adaxial veins longer than achene, usually ovate or broadly ovate, planoconvex, (3.8–) 4.4–5.5 (–6) × (1.4–) 1.8–2.5 mm, 0.5–0.8 mm thick, margin flat, including wing (0.2–) 0.3–0.4 (–0.5) mm wide, ciliate-serrulate distally; beak gold to dark-brown at tip, flat, ± ciliate-serrulate, abaxial suture inconspicuous or with conspicuous white margin, distance from beak tip to achene 2–2.8 (–3.3) mm. Achenes elliptic to broadly ovate, 1.7–2.4 × 1.1–1.7 mm, 0.4–0.6 mm thick.


Phenology: Fruiting late spring–mid summer.
Habitat: Dry soils
Elevation: 100–3500 m

Distribution

V23 670-distribution-map.jpg

Calif., Idaho, Mont., Nev., Oreg., Utah, Wash.

Discussion

While Carex multicostata and C. specifica are usually quite distinct, the perigynia of C. multicostata are sometimes lanceolate and strongly resemble those of C. specifica. The type specimen of C. multicostata has unusually elongate inflorescences resembling those of C. specifica, rather than ± short-triangular inflorescences usually present in C. multicostata.

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 multicostata"
with conspicuous white margin +  and inconspicuous +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
elliptic;broadly ovate +
smaller +
0.4mm +  and 0.6mm +
planoconvex;ovate;ovate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
bidentatate +
papillose +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
Mackenzie +
shortened +
persistent +
rounded +  and attenuate +
not enlarged +
ciliate-serrulate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
8 cm80 mm <br />0.08 m <br /> (25 cm250 mm <br />0.25 m <br />) +
3 (?) +  and 4 (?) +
v--shaped +
3mm;5mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
round +  and trigonous +
14 cm140 mm <br />0.14 m <br /> (110 cm1,100 mm <br />1.1 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Calif. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +  and Wash. +
100–3500 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Dry soils +
gold +  and brown +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
not prophyllate +, sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
conspicuous +
0.3mm +  and 0.4mm +
green +  and pale +
with (1-)3-6(-30) bristles and/or scales +
(0-)4-12-veined +  and (8-)10-17-veined +
light-brown +, gold +  and green-and-white +
ascending +  and ascending-spreading +
Fruiting late spring–mid summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
0.3 cm3 mm <br />0.003 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
0.85 cm8.5 mm <br />0.0085 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Bull. Torrey Bot. Club +
adventitious +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.39 cm3.9 mm <br />0.0039 m <br />) +
light-redbrown +  and gold +
basal +  and proximal +
ovate;lanceolate +
0.39 cm3.9 mm <br />0.0039 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
longer and narrower +
herbaceous +  and membranous +
not differentiated +
cylindric +
Illustrated +  and Endemic +
, +  and aggregated +
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 /> (0.3 cm3 mm <br />0.003 m <br />) +
Carex multicostata +
Carex sect. Ovales +
species +
plant +  and cespitose +