Carex obnupta

L. H. Bailey

Proc. Calif. Acad. Sci., ser. 2, 3: 104. 1891.

IllustratedEndemic
Synonyms: Carex magnifica Dewey ex Piper
Treatment appears in FNA Volume 23. Treatment on page 388. Mentioned on page 380, 386.

Plants not cespitose. Culms obtusely or acutely angled, 20–120 cm, glabrous. Leaves: basal sheaths redbrown; sheaths of proximal leaves bladeless, scabrous, fronts with redbrown spots, prominently ladder-fibrillose, apex U-shaped, redbrown; blades hypostomic, 3–7 mm wide, coriaceous, papillose abaxially. Inflorescences: proximal bract longer than inflorescence, 3–6 mm wide. Spikes arching, at least the proximal pendent; staminate 2–3 (–5); pistillate 2–5; proximal pistillate spike usually sessile, 2.5–15 cm × 5–10 mm, base attenuate. Pistillate scales redbrown, longer and wider than perigynia, apex acute, awnless. Perigynia divergent, brown, veinless, somewhat inflated, loosely enclosing achenes, ellipsoid or obovoid, 2.2–3.8 × 1.4–2.2 mm, leathery, glossy, apex rounded, glabrous; beak colorless or with redbrown spots, 0.1–0.3 mm, orifice hyaline. Achenes often constricted on 1 or both margins, glossy; style base often bent. 2n = 70, 72, 74.


Phenology: Fruiting Jul–Aug.
Habitat: Wet meadows, shores, ditches
Elevation: 0–900 m

Distribution

V23 687-distribution-map.jpg

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

Discussion

Carex obnupta largely replaces C. barbarae north of California and is distinguished from it by the acute scales and the glossy dark brown perigynia that lack veins and have an entire, membranous beak. It is an abundant, almost weedy, plant.

Carex obnupta occasionally hybridizes with C. nudata.

Selected References

None.

Lower Taxa

None.
... more about "Carex obnupta"
74 +, 72 +  and 70 +
biconvex +
constricted +
awnless +  and ladder-fibrillose +
redbrown spots +
, +  and papillose +
Lisa A. Standley +, Jacques Cayouette +  and Leo Bruederle +
L. H. Bailey +
shortened +
not +  and fibrous +
attenuate +
bidentate +  and emarginate +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
papillose +
m--shaped +  and v--shaped +
3mm;7mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
redbrown +  and brown +
20 cm200 mm <br />0.2 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
prophyllate +, subsessile +, pedunculate +  and staminate +
B.C. +, Calif. +, Oreg. +  and Wash. +
0–900 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Wet meadows, shores, ditches +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
with (1-)3-6(-30) bristles and/or scales +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
spreading +, ascending +  and erect +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
Fruiting Jul–Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
short-sheathing +, sheathless +  and leaflike +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
pistillate +  and staminate +
Proc. Calif. Acad. Sci., ser. +
adventitious +
basal +  and proximal +
2-keeled +
longer and wider +
ladder-fibrillose +  and veined +
cylindric +
Illustrated +  and Endemic +
sessile +  and pistillate +
2.5 cm25 mm <br />0.025 m <br /> (15 cm150 mm <br />0.15 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex magnifica +
Carex obnupta +
Carex sect. Phacocystis +
species +
, +  and staminate +
plant +  and not cespitose +