Carex texensis

(Torrey ex L. H. Bailey) L. H. Bailey

Mem. Torrey Bot. Club 5: 97. 1894.

IllustratedEndemic
Basionym: Carex rosea var. texensis Torrey ex L. H. Bailey Mem. Torrey Bot. Club 1: 57. 1889
Treatment appears in FNA Volume 23. Treatment on page 288. Mentioned on page 286, 289.

Plants without conspicuous rhizomes. Culms 10–30 cm, 0.5–1 mm wide basally, 0.4–0.5 mm wide distally. Leaves: sheaths tight, green, fronts hyaline; ligules less than 2 mm, wider than long; widest leaf-blades 1–1.7 mm wide. Inflorescences with 3–8 spikes, 0.6–3 cm × 5–6 mm; proximal internodes 1–2 times as long as proximal spikes; proximal bracts to 1 (–3) cm; spikes with 3–10 spreading or reflexed perigynia. Pistillate scales hyaline or pale-brown with green midvein, ovate, 1.8–2.4 × 0.8–1.3 mm, body 2/3 to almost length of perigynia, apex acute, acuminate or short-awned. Anthers 1 mm. Perigynia green to pale-yellow, faces not veined, 2.6–3.4 × 1–1.3 mm, base of body spongy, thickened, longitudinally striate adaxially, spongy region 0.7–1.1 mm, margins entire, usually serrulate distally; beak 0.7–1.1 mm, apical teeth 0.1–0.3 mm. Stigmas straight or slightly twisted, 0.05 mm wide. Achenes ovate, 1.3–1.5 × 1–1.1 mm.


Phenology: Fruiting spring.
Habitat: Dry to wet-mesic open forests and fields, often rocky or sandy substrates
Elevation: 50–300 m

Distribution

V23 488-distribution-map.jpg

Ala., Ark., Calif., Fla., Ga., Kans., Ky., La., Md., Miss., Mo., Nebr., N.J., N.Y., N.C., Ohio, S.C., Tenn., Tex., Va.

Discussion

Carex texensis is introduced into California, New Jersey, New York and Ohio. Due to confusion with C. retroflexa, C. texensis is probably under-recorded.

Selected References

None.

Lower Taxa

None.

"acute" is not a number."widest" is not a number.

... more about "Carex texensis"
0.13 cm1.3 mm <br />0.0013 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
smaller +
1mm;1.1mm +
1 cm10 mm <br />0.01 m <br /> (?) +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
Peter W. Ball +
(Torrey ex L. H. Bailey) L. H. Bailey +
shortened +
white-hyaline +, hyaline +  and narrow +
red tinged +  and brown +
rounded +
Carex rosea var. texensis +
bidentate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
v--shaped +
0mm;20mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
round +  and trigonous +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
0.4mm;0.5mm +
Ala. +, Ark. +, Calif. +, Fla. +, Ga. +, Kans. +, Ky. +, La. +, Md. +, Miss. +, Mo. +, Nebr. +, N.J. +, N.Y. +, N.C. +, Ohio +, S.C. +, Tenn. +, Tex. +  and Va. +
50–300 m +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Dry to wet-mesic open forests and fields, often rocky or sandy substrates +
, +  and racemose +
sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
wider than long +
serrulate +  and entire +
with (1-)3-6(-30) bristles and/or scales +
stipitate +, not +  and veined +
green +  and pale-yellow +
reflexed +  and spreading +
Fruiting spring. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1-2 times as long as proximal spikes +
Mem. Torrey Bot. Club +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
adventitious +
pale-brown +  and hyaline +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
basal +  and proximal +
0.8mm;1.3mm +
cylindric +
Illustrated +  and Endemic +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex texensis +
Carex sect. Phaestoglochin +
species +
rhizomatous +  and short-rhizomatous +
0.1 cm1 mm <br />0.001 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +