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 red-brown 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 yellow-brown, 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 red-brown, 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.
... more about "Carex triangularis"
Lisa A. Standley +
Boeckeler +
Carex subsect. Multiflorae +
Ark. +, Kans. +, La. +, Miss. +, Mo. +, Okla. +, Tenn. +  and Tex. +
0–600 m +
Open habitats, wet meadows, wet prairies, roadside ditches in seasonally saturated or inundated soils +
Fruiting Jun. +
Illustrated +  and Endemic +
Carex vulpinoidea var. drummondiana +  and Carex vulpinoidea var. triangularis +
Carex triangularis +
Carex sect. Multiflorae +
species +