Carex laevivaginata

(Kükenthal) Mackenzie in N. L. Britton and A. Brown

in N. L. Britton and A. Brown, Ill. Fl. N. U.S. ed. 2, 1: 371. 1913.

Basionym: Carex stipata var. laevivaginata Kükenthal in H. G. A. Engler, Pflanzenr. 20[IV,38]: 172. 1909
Treatment appears in FNA Volume 23. Mentioned on page 274.
Revision as of 21:08, 16 December 2019 by FNA>Volume Importer

Plants with basal sheaths of previous year not persistent. Culms to 80 cm × 2 mm, scabrous throughout. Leaves: sheaths all with blades, fronts smooth, lacking spots, veinless, apex yellow, thickened, truncate, cartilaginous, entire; ligules acute, 5 mm, free limb to 0.5 mm; blades yellow-green, epistomic, to 60 cm × 6 mm, papillose adaxially (25X). Inflorescences densely spicate, cylindric, elongate, with 6–15 distinguishable branches, 3–6 × 1.5 cm; proximal internode to 10 mm; proximal bracts setaceous, apparent. Scales hyaline. Perigynia pale brown, red-brown distally, with red-brown veins, 10–12-veined abaxially, 7-veined adaxially, to 6 × 2.6 mm, base slightly distended proximally, cordate; stipe to 0.2 mm; beak to 2.5 mm, margins serrulate. Achenes ovate, 2 × 1.3 mm; stalk to 0.3 mm; persistent style base cylindric, 0.3 mm. 2n = 46.


Phenology: Fruiting May–Jun.
Habitat: Seasonally saturated or inundated soils in wet meadows, marshes, edges of tidal marshes, swamps, or alluvial bottomlands, particularly on calcareous substrates
Elevation: 0–1500 m

Distribution

V23 460-distribution-map.jpg

Ont., Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Md., Mass., Mich., Minn., Mo., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Va., W.Va., Wis.

Discussion

Carex laevivaginata is readily distinguished from all other species in the section by the thickened, yellow sheath apex and the papillose, epistomic leaves.

Selected References

None.

Lower Taxa

None.
... more about "Carex laevivaginata"
Lisa A. Standley +
(Kükenthal) Mackenzie in N. L. Britton and A. Brown +
Carex stipata var. laevivaginata +
Ont. +, Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Md. +, Mass. +, Mich. +, Minn. +, Mo. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, S.C. +, Va. +, W.Va. +  and Wis. +
0–1500 m +
Seasonally saturated or inundated soils in wet meadows, marshes, edges of tidal marshes, swamps, or alluvial bottomlands, particularly on calcareous substrates +
Fruiting May–Jun. +
in N. L. Britton and A. Brown, Ill. Fl. N. U.S. ed. +
Carex laevivaginata +
Carex sect. Vulpinae +
species +