Carex preslii

Steudel

Syn. Pl. Glumac. 2: 242. 1855.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 350. Mentioned on page 344, 345, 346.

Plants densely cespitose. Culms 23–56 cm. Leaves: sheath adaxially white-hyaline, summits U-shaped to rounded, often prolonged to 6 mm beyond collar; distal ligules 0.8–2.5 (–4) mm; blades (2–) 3–4 per fertile culm, 6–30 cm × 1.7–3.6 mm. Inflorescences dense or open, green and brown, gold, or brown, 1.4–3 cm × (5–) 8–15 mm, stiff, appearing coarse-textured; proximal internode 3–7 mm; 2d internode 1–4 mm; proximal bracts usually aristate, shorter than inflorescences. Spikes 3–7, distant to loosely aggregated, usually individually distinct, narrowly to broadly ovoid, 7–10 × (3–) 4.5–7.5 mm, base rounded or attenuate, apex usually acute. Pistillate scales white, gold, redbrown, or chestnut-brown, usually with pale to green midstripe, ovate to broadly ovate, 2.8–3.7 mm, shorter or longer and narrower than perigynia, margin occasionally white, 0.1–0.2 (–0.5) mm wide, apex usually acute to acuminate. Perigynia appressed-ascending to ascending-spreading, green or gold, usually green toward beak, contrasting in color with pistillate scales, conspicuously 0–7-veined abaxially, conspicuously 0 (–5) -veined adaxially, thin, ovate to broadly ovate, planoconvex or, more often, biconvex, (3.3–) 3.5–4.3 × (1.3–) 1.5–2 mm, 0.5–0.6 (–0.8) mm thick, 2.1–2.7 times as long as wide, margin flat, including wing 0.2–0.4 mm wide, ciliate-serrulate at least on distal body, without metallic sheen; beak gold, gold-brown, redbrown, or brown at tip, flat, ± ciliate-serrulate or cylindric, unwinged, ± entire for 0.6 mm, abaxial suture usually inconspicuous, distance from beak tip to achene 1–2.4 mm. Achenes broadly oblong, ovate, broadly elliptic, or quadrate, 1.5–2 × 1–1.5 mm, 0.4–0.7 mm thick. 2n = 80.


Phenology: Fruiting summer.
Habitat: Open dry to seasonally dry areas
Elevation: 1000–3400 m

Distribution

V23 605-distribution-map.jpg

Alta., B.C., Yukon, Alaska, Calif., Idaho, Mont., Oreg., Wash.

Discussion

Carex preslii has been synonymized with C. pachystachya (A. Cronquist 1969; C. L. Hitchcock and A. Cronquist 1973; A. Cronquist et al. 1972+).

Selected References

None.

Lower Taxa

None.

"thin" 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 preslii"
0.6 cm6 mm <br />0.006 m <br /> (?) +
quadrate;elliptic;quadrate;elliptic;ovate;oblong +
smaller +
0.4mm +  and 0.7mm +
bidentatate +
papillose +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
Steudel +
shortened +
persistent +
attenuate +  and rounded +
not enlarged +
Brown (?) +, Redbrown (?) +, Gold-brown (?) +  and Gold (?) +
cylindric +, ciliate-serrulate +  and flat +
6 cm60 mm <br />0.06 m <br /> (30 cm300 mm <br />0.3 m <br />) +
3 (?) +  and 4 (?) +
v--shaped +
1.7mm;3.6mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
round +  and trigonous +
23 cm230 mm <br />0.23 m <br /> (56 cm560 mm <br />0.56 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Alta. +, B.C. +, Yukon +, Alaska +, Calif. +, Idaho +, Mont. +, Oreg. +  and Wash. +
1000–3400 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Open dry to seasonally dry areas +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
brown +, gold +, punct +, green and brown +, list +  and coloration +
coarse-textured +
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 +
basal +  and cauline +
0.2mm +  and 0.4mm +
pale +  and green +
with (1-)3-6(-30) bristles and/or scales +
0(-5)-veined +  and 0-7-veined +
green +  and gold +
appressed-ascending +  and ascending-spreading +
0.5mm +  and 0.6mm +
Fruiting summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
sheathless +  and bristlelike +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Syn. Pl. Glumac. +
adventitious +
chestnut-brown +, redbrown +, gold +  and white +
basal +  and proximal +
ovate;broadly ovate +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.37 cm3.7 mm <br />0.0037 m <br />) +
shorter or longer and narrower +
herbaceous +  and membranous +
not differentiated +
cylindric +
Illustrated +  and Endemic +
distant +  and loosely aggregated +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
distinct +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.75 cm7.5 mm <br />0.0075 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 /> (0.6 cm6 mm <br />0.006 m <br />) +
Carex preslii +
Carex sect. Ovales +
species +
plant +  and cespitose +