Carex latebracteata

Waterfall

Rhodora 56: 23. 1954.

Treatment appears in FNA Volume 23. Treatment on page 563. Mentioned on page 558, 560.

Culms 17–31 cm. Leaves: basal sheaths pale-brown to orangebrown; blades pale green, conspicuously glaucous, widest leaves (4.1–) 6–15 mm wide, equaling stems, coriaceous, margins hyaline, white, scabrous. Terminal spikes with staminate portion 2–5-flowered, 3.2–4 × 1.1–2.8 mm; pistillate portion 3–14-flowered. Lateral spikes 0. Pistillate scales green; proximal scales with apex acuminate; distal scales ovate, apex obtuse. Staminate scales green, ovate, 2.5–3.4 × 0.9–1.5 mm, margins connate at base, enfolding scales above, hyaline, white, apex obtuse. Anthers 1.6–2.2 mm. Perigynia tightly enveloping achenes, pale green, ellipsoid, 6.7–7.9 × 2–2.7 mm, apex abruptly contracted into beak; beak 2.7–4 mm, smooth. Achenes brown, obovoid to obpyriform, 2.8–3 × 2–2.5 mm. Stigmas clavate, convolute, minutely papillose. 2n = 98.


Phenology: Fruiting spring (late Apr–late May).
Habitat: Steep, shaded slopes in rich, mesic to dry-mesic hardwood forests

Discussion

Carex latebracteata is endemic to the Ouachita Mountains of Arkansas and Oklahoma.

Selected References

None.

Lower Taxa

None.

... more about "Carex latebracteata"
0.28 cm2.8 mm <br />0.0028 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
obovoid;obpyriform +
2mm;2.5mm +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
William J. Crins +, Robert F. C. Naczi +, A. A. Reznicek +  and Bruce A. Ford +
Waterfall +
shortened +
pale-brown;orangebrown +
tapering +
flattened-triangular +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
v--shaped +
0mm;20mm +
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 +
round +  and trigonous +
17 cm170 mm <br />0.17 m <br /> (31 cm310 mm <br />0.31 m <br />) +
Ark. +  and Okla. +
white +  and hyaline +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Steep, shaded slopes in rich, mesic to dry-mesic hardwood forests +
septate-nodulose +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
stipitate +  and 2-veined +
white +  and hyaline +
lanceolate;oblong-lanceolate rounded-trigonous +
with (1-)3-6(-30) bristles and/or scales +
veined +  and veinless +
0.67 cm6.7 mm <br />0.0067 m <br /> (0.79 cm7.9 mm <br />0.0079 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
Fruiting spring (late Apr–late May). +
2-3(-4)-carpellate +
3-14-flowered +, pistillate +, 2-5-flowered +  and staminate +
3 (?) +  and 1 (?) +
adventitious +
staminate +  and pistillate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
basal +  and proximal +
0.9mm;1.5mm +
septate-nodulose +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
coriaceous +
papillose +
deciduous +
dilated +
Carex latebracteata +
Carex sect. Phyllostachyae +
species +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
plant +  and cespitose +
6mm +  and 15mm +