. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 366 CYPERACEAE. Vol. I. Carex austrina (Small) Mackenzie. Southern Sedge. Fig. C. Muhlenbergii var. australis Olney; Bailey, Proc. Am. Acad. 22: 141. 1886. Not C. australis T. Kirk, 1899. C. Muhlenbergii austrinus Small, Fl. SE. U. S. 218. 1903. C. austrina Mackenzie, Bull. Torr. Club 34: 151. 1907. Culms erect, slender, sharply triangular, rough above, i
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 366 CYPERACEAE. Vol. I. Carex austrina (Small) Mackenzie. Southern Sedge. Fig. C. Muhlenbergii var. australis Olney; Bailey, Proc. Am. Acad. 22: 141. 1886. Not C. australis T. Kirk, 1899. C. Muhlenbergii austrinus Small, Fl. SE. U. S. 218. 1903. C. austrina Mackenzie, Bull. Torr. Club 34: 151. 1907. Culms erect, slender, sharply triangular, rough above, i°-2i° tall. Leaves il"-2i" wide, usually noticeably shorter than culm; sheaths tight, thick- ened at mouth, not conspicuously septate-nodulose; bracts ¥-2' long, dilated and much nerved at base, long-cuspidate and conspicuous; spikes numerous, androgynous, ovoid or subglobose, aggregated, the lower distinct but not separate, forming a head ji"- 15" long, 4"-7i" thick; perigynia ascending, 2" long, 1 \" wide, the body suborbicular, nerved on outer and nearly nerveless on inner face, contracted into a 2-toothed beak half length of body; scales hyaline, strongly several-nerved, ovate, strongly awned, as wide as and longer than perigynia; stigmas 2. In dry sunny places, Missouri and Kansas to Arkansas and Texas. April-July. 18. Carex mesochdrea Mackenzie. Midland Sedge. Fig. 885. C. mediterranea Mackenzie, Bull. Torr. Club 33: 439. 1906. Not C. B. Clarke, 1896. C. mesochorea Mackenzie, Bull. Torr. Club 37: 246. 1910. Culms slender, erect, rough above, usually about 10' tall. Leaves ii"-2" wide, usually about half length of culm; bracts of lower spike bristle-form, short; spikes few, androgynous, only the lower dis- tinguishable, subglobose, densely clustered in a ter- minal ovoid head s"-8J" long, 5" thick; perigynia ascending or spreading, iS" long, the body ovate, slightly more than 1" wide, nerved on o
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