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.

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, planoconvex 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.

"narrower" is not a number."+timesaslongasinflorescences" is not declared as a valid unit of measurement for this property."not undefined" is not a number.

... more about "Carex hyalina"
oblong-lanceolate +
smaller +
0.6 +  and 1.8-2.6×0.9-1.2 +
bidentatate +
papillose +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
shortened +
persistent +
attenuate +
not enlarged +
ciliate-serrulate +
9 cm90 mm <br />0.09 m <br /> (20 cm200 mm <br />0.2 m <br />) +
4 (?) +  and 7 (?) +
auriculate +
1mm;2.7mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
0 cm0 mm <br />0 m <br /> (3.7 cm37 mm <br />0.037 m <br />) +
parallel +  and divergent +
terete +, rolled +  and plicate +
conspicuous +
fertile +  and vegetative +
round +  and trigonous +
25 cm250 mm <br />0.25 m <br /> (95 cm950 mm <br />0.95 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Ark. +, La. +, Miss. +, Okla. +, Tenn. +  and Tex. +
10–100 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Bottomland woods on clayey and silty soils, riverbanks +
light green +  and light-brown +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
not prophyllate +, sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.8mm +  and 1.3mm +
with (1-)3-6(-30) bristles and/or scales +
3-7-veined +  and 5-10-veined +
green +  and pale-brown +
0.6 +, 4.5-6.6×2.2-3.5 +, 4mm +  and 4.5-6.6×2.2-3.5mm +
Fruiting spring. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
sheathless +  and bristlelike +
with bristle tips;scale-like +
0.2 cm2 mm <br />0.002 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Boston J. Nat. Hist. +
adventitious +
green +  and brown +
basal +  and proximal +
0.23 cm2.3 mm <br />0.0023 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
herbaceous +  and membranous +
not differentiated +
cylindric +
Illustrated +  and Endemic +
distinct +
0.6 cm6 mm <br />0.006 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
clavate-ovoid +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +  and persistent +
2-3(-4)-fid +
prolonged +
u--shaped +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
Carex hyalina +
Carex sect. Ovales +
species +
plant +  and colonial +