Carex triangularis

Boeckeler

Flora 39: 226. 1856.

IllustratedEndemic
Synonyms: Carex vulpinoidea var. drummondiana Boeckeler Carex vulpinoidea var. triangularis (Boeckeler) Kükenthal
Treatment appears in FNA Volume 23. Mentioned on page 284.

Culms to 100 cm × 2 mm, scabrous. Leaves: sheath fronts spotted redbrown or pale-brown, apex short-convex, membranous or slightly thickened, rugose; ligule retuse, to 0.5 mm, free limb to 0.1 mm; blades 70 cm × 5 mm, tip not reaching inflorescence. Inflorescences spicate, 2.5–6 × 1.5 cm, with 10–15 branches, proximal scarcely separate; the proximal internode to 10 mm; proximal bracts setaceous, not conspicuous, distal bracts scalelike. Scales hyaline, brown, awn to 2 mm, usually shorter than scale body. Perigynia yellowbrown, red dotted, 3–5-veined abaxially, body broadly ovate, 2.5–5 × 2.5–3 mm, base rounded; beak 0.8–1.2 mm. Achenes redbrown, elliptic, 1.4–1.6 × 1.2 mm, dull.


Phenology: Fruiting Jun.
Habitat: Open habitats, wet meadows, wet prairies, roadside ditches in seasonally saturated or inundated soils
Elevation: 0–600 m

Distribution

V23 483-distribution-map.jpg

Ark., Kans., La., Miss., Mo., Okla., Tenn., Tex.

Discussion

The red-dotted perigynia of Carex triangularis separates the species from all other taxa in the section; however, it is similar to C. annectens in the relative lengths of leaves and flowering stems, and in the yellow-brown, ovate perigynia that are larger and broader than in C. annectens.

Selected References

None.

Lower Taxa

None.

"shortened" is not a number.

... more about "Carex triangularis"
0.14 cm1.4 mm <br />0.0014 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
biconvex +
smaller +
short-convex +
membranous +
Lisa A. Standley +
Boeckeler +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
rounded +
Carex subsect. Multiflorae +
bidentate +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
70 cm700 mm <br />0.7 m <br /> (?) +
v--shaped +
5 cm50 mm <br />0.05 m <br /> (?) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
0 cm0 mm <br />0 m <br /> (100 cm1,000 mm <br />1 m <br />) +
round +  and trigonous +
Ark. +, Kans. +, La. +, Miss. +, Mo. +, Okla. +, Tenn. +  and Tex. +
0–600 m +
hypogynous +  and subtending +
biconvex +  and trigonous +
Open habitats, wet meadows, wet prairies, roadside ditches in seasonally saturated or inundated soils +
2.5 cm25 mm <br />0.025 m <br /> (6 cm60 mm <br />0.06 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (?) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
red dotted +  and yellowbrown +
spreading +  and ascending +
Fruiting Jun. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
adventitious +
brown +  and hyaline +
basal +  and proximal +
2-keeled +
cylindric +
Illustrated +  and Endemic +
sessile +  and pistillate +
1 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex vulpinoidea var. drummondiana +  and Carex vulpinoidea var. triangularis +
Carex triangularis +
Carex sect. Multiflorae +
species +
plant +  and cespitose +