Difference between revisions of "Carex hyalina"

Boott

Boston J. Nat. Hist. 5: 112. 1845.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 377. Mentioned on page 338, 375.
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|genus=Carex
 
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|section=Carex sect. Ovales
 
|section=Carex sect. Ovales

Latest revision as of 20:42, 5 November 2020

Plants ± colonial; rhizomes short-creeping between patches. Culms 25–95 cm; vegetative culms numerous, conspicuous, with 15–35 leaves, 3-ranked. Leaves: sheaths with adaxial hyaline band, summits U-shaped, prolonged 0.4–1.6 mm beyond collar; distal ligules 2–3.5 mm; blades 4–7 per fertile culm, pleated, ± auriculate at collar, 9–20 cm × 1–2.7 mm. Inflorescences open or dense, light green to light brown, 1.3–4 cm × 8–12 mm; proximal internode 2–9 mm; 2d internode 2–5 mm; proximal bracts scalelike or with bristle tips to 3.7 cm. Spikes 2–4(–6), distant, distinct, clavate-ovoid, 6–18 × 6–12 mm, base attenuate on terminal spike, truncate on lateral spikes, apex rounded. Pistillate scales silvery white to pale brown, narrow green to brown midstripe, narrowly ovate, 2.3–3.8 mm, as long as and narrower than perigynia, apex obtuse to acute. Perigynia widely spreading, green to pale brown, conspicuously 5–10-veined abaxially, conspicuously 3–7-veined adaxially, elliptic to nearly orbiculate, plano-convex to biconvex, (4–)4.5–6.6 × 2.2–3.5 mm, 0.6 mm thick, sometimes finely papillose, margin flat, including wing 0.8–1.3 mm wide; beak white or pale brown at tip, flat, ciliate-serrulate, abaxial suture usually inconspicuous, distance from beak tip to achene 2–3 mm. Achenes narrowly oblong-lanceolate, 1.8–2.6 × 0.9–1.2 mm, 0.6 mm thick. 2n = 74.


Phenology: Fruiting spring.
Habitat: Bottomland woods on clayey and silty soils, riverbanks
Elevation: 10–100 m

Distribution

V23 669-distribution-map.jpg

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

Discussion

Selected References

None.

Lower Taxa

None.