Carex albursina

E. Sheldon

Bull. Torrey Bot. Club20: 284. 1893

Common names: Carex du lac à l’Ours-Blanc
Basionyms: Carex laxiflora latifolia
Found in FNA Volume 23. Treatment on page 440. Mentioned on page 432, 437, 439, 452.
FNA23 P111 Carex purpurifera pg 437.jpeg
Culms densely tufted, lateral, ascending or lax to decumbent, distinctly winged, 10–62 cm × 2–2.4 mm; basal sheath light brown to brown, the proximal frequently wine-red or purple, small, triangular. Leaves: sheaths 2–15 mm; blades ascending, midrib well developed, 2 lateral veins conspicuous, slightly more so than other veins, flat, thin, 10–35 cm × 10–38 mm, widest leaf 13–38(–62) mm wide, blades of overwintering leaves smooth. Inflorescences: peduncles of proximal spikes to 5.8 cm; of terminal spike absent. Bracts 1.4–2.6 cm × 3.9–2.2(–3.2) mm; bract blades of distal lateral spikes lanceolate or narrowly lanceolate, wider than spikes, concealing them, widest bract blade of distalmost lateral spike (2.9–)3.2–8.3 mm wide. Spikes 4(–5) per culm; lateral spikes 6–36 × 3–4.2 mm; terminal spike erect, linear, 4–18 × 1.2–1.6 mm, often hidden by distal 2 pistillate spikes and distal bract blade, frequently exceeded by distal 2 pistillate bracts. Pistillate scales oblong, 2.8–3.2 × 1.4–2 mm, apex obtuse or truncate, awnless (sometimes mucronate). Staminate scales oblong ovate, 2.8–3.2 × 1.4–2 mm, margins hyaline, apex obtuse. Anthers 2–2.2 mm. Perigynia 3–20 per spike, strongly to loosely overlapping, erect or ascending, obovate, 3–4.2 × 1.8–2.1 mm; beak abruptly bent, 0.3–0.6 mm. Achenes ovoid, 2.5–3.8 × 1.6–1.8 mm. 2n = 44.

Phenology: Fruiting spring.
Habitat: Moist deciduous or deciduous-evergreen forests, on steep slopes, or often, around limestone escarpments, washes, slides, or cave entrances
Elevation: 100–1200 m

Distribution

Ont., Que., Ala., Ark., Conn., D.C., Ga., Ill., Ind., Iowa, Ky., Md., Mass., Mich., Minn., Mo., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Vt., Va., W.Va., Wis.

Discussion

References

None.

Facts about "Carex albursina"
AuthorCharles T. Bryson + and Robert F. C. Naczi +
BasionymCarex laxiflora latifolia +
Common nameCarex du lac à l’Ours-Blanc +
Elevation100–1200 m +
HabitatMoist deciduous or deciduous-evergreen forests, on steep slopes, or often, around limestone escarpments, washes, slides, or cave entrances +
IllustratorSusan A. Reznicek +
PhenologyFruiting spring. +
ReferenceNone +
Taxon nameCarex albursina +
Taxon parentCarex sect. Laxiflorae +
Taxon rankspecies +
VolumeVolume 23 +