Carex austrina

Mackenzie

Bull. Torrey Bot. Club 34: 151. 1907.

IllustratedEndemic
Basionyms: Carex muehlenbergii var. australis Olney ex L. H. Bailey Proc. Amer. Acad. Arts 22: 141. 1886
Treatment appears in FNA Volume 23. Treatment on page 294. Mentioned on page 287, 288, 293.

Plants without conspicuous rhizomes. Culms 20–90 cm, 1.5–3 mm wide basally, 0.9–1.1 mm wide distally. Leaves: sheaths tight, green, fronts hyaline, yellowish and thickened at mouth; ligules to 3 mm, as long as wide; widest leaf-blades 2.5–4.5 mm wide, sometimes papillose adaxially. Inflorescences with (3–) 5–10 spikes, 1.5–3.5 cm × 8–15 mm; proximal internodes equaling or shorter than proximal spikes; proximal bracts 1–5 cm; spikes with 8–20 ascending or spreading perigynia. Pistillate scales hyaline or brown with green, 3-veined center, ovate, (2.4–) 3–4.3 × (1–) 1.6–3 mm, body slightly shorter to longer than perigynium and as wide, apex awned to 1.5–3.5 (–4) mm. Anthers 2.2–2.5 mm. Perigynia pale green, pale-yellow, or pale-brown, 9–15-veined abaxially, 3.5–5 × 2.2–3 mm, margins serrulate distally; beak 0.8–1.2 mm, apical teeth 0.4–0.6 mm. Achenes suborbiculate, 1.9–2.5 × 1.5–2 mm.


Phenology: Fruiting late spring–early summer.
Habitat: Dry prairies, forests, roadside ditches, often in calcareous soils
Elevation: 100–500 m

Distribution

V23 506-distribution-map.jpg

Ala., Ark., Iowa, Kans., Ky., La., Miss., Mo., Nebr., Okla., Tenn., Tex.

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Carex austrina"
0.19 cm1.9 mm <br />0.0019 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
suborbiculate +
smaller +
1.5mm;2mm +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Peter W. Ball +
Mackenzie +
shortened +
white-hyaline +, hyaline +  and narrow +
red tinged +  and brown +
rounded +
Carex muehlenbergii var. australis +
bidentate +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
v--shaped +
0mm;20mm +
shorter to longer +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.43 cm4.3 mm <br />0.0043 m <br />) +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
round +  and trigonous +
20 cm200 mm <br />0.2 m <br /> (90 cm900 mm <br />0.9 m <br />) +
0.9mm;1.1mm +
Ala. +, Ark. +, Iowa +, Kans. +, Ky. +, La. +, Miss. +, Mo. +, Nebr. +, Okla. +, Tenn. +  and Tex. +
100–500 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
yellowish +  and hyaline +
biconvex +  and trigonous +
Dry prairies, forests, roadside ditches, often in calcareous soils +
, +  and racemose +
sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0 cm0 mm <br />0 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
pale-brown +, pale-yellow +  and pale green +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
spreading +  and ascending +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Fruiting late spring–early summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Bull. Torrey Bot. Club +
adventitious +
brown with green +  and hyaline +
basal +  and proximal +
2-keeled +
cylindric +
Illustrated +  and Endemic +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex austrina +
Carex sect. Phaestoglochin +
species +
rhizomatous +  and short-rhizomatous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +