Carex straminea

Willdenow in C. Schkuhr

in C. Schkuhr, Beschr. Riedgräs. 1: 49, plate G, fig. 34. 1801.

IllustratedEndemic
Synonyms: Carex richii (Fernald) Mackenzie
Treatment appears in FNA Volume 23. Treatment on page 365. Mentioned on page 335, 362, 364, 366, 368, 371.

Plants densely cespitose. Culms 35–100 cm. Leaves: sheaths adaxially green-veined nearly to collar, narrow hyaline band or sharp Y-shaped region at collar, adaxially firm, summits U-shaped; distal ligules 1.5–4.5 mm; blades 3–4 per fertile culm, 15–30 cm × 1.5–3 mm. Inflorescences nodding, open, yellowbrown to reddish-brown, 3.5–8 cm × 5–14 mm; proximal internode 5–18 mm; 2d internode 5–17 mm; proximal bracts scalelike with bristle tips shorter than inflorescences. Spikes 3–7, distant, distinct, globose, (6–) 9–14 × 6–9 mm, base usually attenuate, apex rounded; lateral spikes with staminate portion 2–6 mm at base. Pistillate scales reddish-brown, with green or pale midstripe, lanceolate, 2.5–3 mm, shorter or longer and narrower than perigynia, margin reddish-brown, apex firm, acuminate or awned to 0.8 mm. Staminate scales with reddish-brown margins. Perigynia widely spreading, reddish-brown, conspicuously 5-veined or more on each face, ± orbiculate, flat except over achene, 4–5.6 × 1.8–2.8 mm, 0.4–0.5 mm thick, base rounded, margin flat, including wing 0.6–0.9 mm wide; beak widely spreading, pale to reddish-brown at tip, flat, ciliate-serrulate, abaxial suture with golden brown margin, distance from beak tip to achene 2–3 mm. Achenes elliptic, 1.5–1.8 × 0.8–1 mm, 0.3–0.4 mm thick. 2n = 74.


Phenology: Fruiting early summer.
Habitat: Freshwater marshes, shores, and swales, wet woods, in sandy or peaty, acidic soils
Elevation: 0–400 m

Distribution

V23 642-distribution-map.jpg

Conn., Del., D.C., Ill., Ind., Ky., Md., Mass., Mich., Mo., N.J., N.Y., N.C., Ohio, Pa., R.I., Va., W.Va., Wis.

Discussion

The distribution of Carex straminea is discontinuous: scattered occurrences or clusters of occurrences are widely separated from each other.

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 straminea"
biconvex +
smaller +
0.3mm +  and 0.4mm +
bidentatate +
papillose +
0 cm0 mm <br />0 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
Willdenow in C. Schkuhr +
shortened +
persistent +
rounded +  and attenuate +
not enlarged +
ciliate-serrulate +
15 cm150 mm <br />0.15 m <br /> (30 cm300 mm <br />0.3 m <br />) +
3 (?) +  and 4 (?) +
v--shaped +
1.5mm;3mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
round +  and trigonous +
35 cm350 mm <br />0.35 m <br /> (100 cm1,000 mm <br />1 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Conn. +, Del. +, D.C. +, Ill. +, Ind. +, Ky. +, Md. +, Mass. +, Mich. +, Mo. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, Va. +, W.Va. +  and Wis. +
0–400 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Freshwater marshes, shores, and swales, wet woods, in sandy or peaty, acidic soils +
yellowbrown +  and reddish-brown +
0.5 cm5 mm <br />0.005 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
not prophyllate +, sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
golden brown +  and reddish-brown +
0.6mm +  and 0.9mm +
pale +  and green +
with (1-)3-6(-30) bristles and/or scales +
0.4mm +  and 0.5mm +
Fruiting early summer. +
2-3(-4)-carpellate +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
3 (?) +  and 1 (?) +
sheathless +  and bristlelike +
0.5 cm5 mm <br />0.005 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
in C. Schkuhr, Beschr. Riedgräs. +
y--shaped +  and sharp +
adventitious +
staminate +  and pistillate +
reddish-brown +
basal +  and proximal +
lanceolate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
shorter or longer and narrower +
herbaceous +  and membranous +
not differentiated +
cylindric +
Illustrated +  and Endemic +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
distinct +
0.9 cm9 mm <br />0.009 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
globose +
0.6 cm6 mm <br />0.006 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 +
u--shaped +
Carex richii +
Carex straminea +
Carex sect. Ovales +
species +
plant +  and cespitose +