Carex basiantha

Steudel

Syn. Pl. Glumac. 2: 232. 1855.

IllustratedEndemic
Synonyms: Carex willdenowii var. pauciflora Olney ex L. H. Bailey
Treatment appears in FNA Volume 23. Treatment on page 560. Mentioned on page 455, 559.

Culms spreading to nodding, (10.7–) 18–39 cm, 0.5–0.8 of total plant height. Leaves: basal sheaths pale-brown to dark-brown; blades green, exceeding culms, 1.4–3.7 mm wide, herbaceous, margins green, smooth or scabrous. Lateral spikes 1–4, basal, on nodding peduncles. Terminal spikes with staminate portion 4–61-flowered, (4–) 12.7–25.6 × 0.7–1.4 mm; pistillate portion 2–4 (–6) -flowered. Pistillate scales green, sometimes tinged with white or reddish-brown, (0.9–) 1.2–2.4 mm wide, apex attenuate to green awns; distal scales with hyaline margins 0.3–0.8 mm wide, not more than 1.5 times as wide as and not concealing perigynia, apex acute, awnless. Staminate scales green or tinged with light-brown, ovate, 2.2–3.9 × 1.6–2 mm, margins free but enfolding scales above, hyaline, white, apex obtuse, erose. Anthers 0.8–1.5 mm. Perigynia pale green to pale-brown, often speckled reddish-brown, narrowly ovoid or lanceovoid, (5.8–) 6.2–7.6 (–8) × 1.4–2 mm, tightly enveloping achenes, apex gradually tapering; beak (2.5–) 2.7–3.7 (–4.3) mm, scabrous. Stigmas filiform, flexuous, long, slender, strongly papillose. Achenes brown, oblong, (2.4–) 2.6–3 (–3.4) × (1.3–) 1.5–1.7 (–1.9) mm.


Phenology: Fruiting spring–summer (mid Mar–mid Jul).
Habitat: Neutral or slightly acidic soils in mesic to wet mesic deciduous forests, usually on lower slopes above flood plains of rivers and streams
Elevation: 50–1000 m

Distribution

V23 1065-distribution-map.jpg

Ala., Ark., Fla., Ga., La., Miss., N.C., Okla., S.C., Tenn., Tex.

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Carex basiantha"
0.3 cm3 mm <br />0.003 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1.5mm;1.7mm +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
William J. Crins +, Robert F. C. Naczi +, A. A. Reznicek +  and Bruce A. Ford +
Steudel +
shortened +
pale-brown;dark-brown +
tapering +
0.37 cm3.7 mm <br />0.0037 m <br /> (0.43 cm4.3 mm <br />0.0043 m <br />) +
flattened-triangular +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.37 cm3.7 mm <br />0.0037 m <br />) +
v--shaped +
1.4mm;3.7mm +
smaller +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
2 +  and widest +
spreading +  and nodding +
round +  and trigonous +
18 cm180 mm <br />0.18 m <br /> (39 cm390 mm <br />0.39 m <br />) +
1.5+ times as wide as and not concealing perigynia +
Ala. +, Ark. +, Fla. +, Ga. +, La. +, Miss. +, N.C. +, Okla. +, S.C. +, Tenn. +  and Tex. +
50–1000 m +
white +  and hyaline +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Neutral or slightly acidic soils in mesic to wet mesic deciduous forests, usually on lower slopes above flood plains of rivers and streams +
septate-nodulose +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
stipitate +  and 2-veined +
hyaline +  and green +
lanceolate;oblong-lanceolate rounded-trigonous +
0.3mm +  and 0.8mm +
with (1-)3-6(-30) bristles and/or scales +
veined +  and veinless +
0.76 cm7.6 mm <br />0.0076 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
speckled reddish-brown +, pale green +  and pale-brown +
0.62 cm6.2 mm <br />0.0062 m <br /> (0.76 cm7.6 mm <br />0.0076 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Fruiting spring–summer (mid Mar–mid Jul). +
2-3(-4)-carpellate +
2-4(-6)-flowered +, pistillate +, 4-61-flowered +  and staminate +
3 (?) +  and 1 (?) +
Syn. Pl. Glumac. +
adventitious +
staminate +  and pistillate +
tinged with light-brown +, green +, , +  and tinged with white or tinged with reddish-brown +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.39 cm3.9 mm <br />0.0039 m <br />) +
basal +  and proximal +
1.6mm;2mm +
septate-nodulose +
Illustrated +  and Endemic +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillose +
filiform +
slender +
deciduous +
dilated +
Carex willdenowii var. pauciflora +
Carex basiantha +
Carex sect. Phyllostachyae +
species +
0.4 cm4 mm <br />0.004 m <br /> (1.27 cm12.7 mm <br />0.0127 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
plant +  and cespitose +