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.
Revision as of 00:25, 30 July 2020 by imported>Volume Importer
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

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.

"shortened" is not a number."widest" is not a number.

... 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 />) +
tapering;obtuse;acute;attenuate +
William J. Crins +, Robert F. C. Naczi +, A. A. Reznicek +  and Bruce A. Ford +
Steudel +
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 +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.37 cm3.7 mm <br />0.0037 m <br />) +
smaller +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
2 cm20 mm <br />0.02 m <br /> (?) +
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 +
basal +  and proximal +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
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 +