584 CLX. CYPERACEZ. Carex. 
F. Terminal spike androgynous, pistillate at the summit ; the other pis- 
tallate. 
61. C. virescens. Muhl. 
Spikes 2—4, oblong, erect, alternate, the lower subsessile, bracteate ; wpper 
spike very rarely wholly ¢; perig. ovate, obtuse, costate, pubescent, longer than 
the ovate, pubescent and mucronate glume, or about equal to it; s¢. 1—2f high, 
rather slender; Jvs. towards the base——Whole plant pubescent and light green. 
8. costata. Schw. Perig. strongly costate, outer sheaths purplish-brown ; ls. 
numerous and larger.—Both are common in open woods and hedges. 
62. C. nirsvTa. 
Spikes 3, short-oblong, thick, alternate, erect, the lower subsessile and long- 
bracteate, all approximate and densely flowered; perig. ovate, triquetrous, 
nerved, obtuse, entire at the orifice, glabrous in maturity, about equal to the 
ovate, acuminate, glabrous glume; st. 12—20’ high; lvs. and sheaths retrorsely 
pubescent ; upper spike very rarely all ¢.—Moist upland meadows. Common. 
B. pedunculata. Torr. Spikes oblong-cylindric, pedunculate; Jvs. slightly 
pubescent.—Common. C. Triceps (Mz.) much resembles this,—is not pubes- 
cent but glabrous. E 
63. Buxpaumu. Wahl. 
Spikes about 4, cylindric, thick, upper one sometimes wholly 3’, and 
sometimes Q' above and below; pistiliferous oblong, subremote, subsessile, 
bracteate; perig. ovate-oblong, acutish, or obovate, obtuse, subtriquetrous, 
entire at the orifice, nerved and glabrous, scarcely equal to the oblong and mu- 
cronate glume; st. 10—18’ high, leafy towards the base—Common in wet 
grounds. It is described as sometimes having 2 stigmas in Europe, but placed 
by Schk., Wahl., &c., in the division having 3. . 
64. C. GraciLLima. Schw. 
Spikes 3—4, long, graceful, sub-loose-flowered, distant, long-pedicellate, 
recurved in maturity, bracteate, upper one rarely all ¢; perig. oblong, trique- 
trous, obtuse, oblique at the orifice, slightly 2-lobed, longer than the oblong and 
obtuse and short-awned glume; st. often 2f high, reddish towards the base, 
leafy and subprocumbent, pale green.—Common in damp meadows. 
_-65. C. rormosa. Dew. 
Spikes 3—4, oblong, short and thick, distant, 1-sided, on a long and slen- 
der peduncle, recurved; perig. oblong, triquetrous, subinflated, acutish at either 
end, nearly entire or 2-lubed at the orifice, twice longer than the ovate and 
acute glume; st. 1—2f high, 3-sided, dark brown towards the base, yellowish 
bright green—Common in wet meadows. 
66. C. Davisu. Torr. (C. Torreyana. Dew.) . . 
Spikes 4, oblong, cylindric, subsparsely flowered, remote, pedicellate, pen- 
dulous in maturity; perig. oblong-conic, subinflated, subtriquetrous, nerved, 
acutish, short-rostrate, 2-lobed at the orifice, glabrous towards maturity, about 
equaling the oblong, scabrous-awned glume; st. 1—2f high, triquetrous, sca- 
brous above, with leaves equaling it; dvs. and sheaths pubescent, sometimes but 
very little, light green.—First found on the alluvial meadows of the Housa- 
tonic in Mass., Dewey. Sometimes nearly pubescent. 
G. Staminate spike single. ’ 
1. Pistillate spikes short and sessile or nearly sessile. Peryginia radiating or 
diverging. 
67. C. varia. Muhl. 
3’ Spike erect, short or subelongated; Q spikes 3, ovate, sessile, rather 
near, bracteate, few-flowered; perig. ovate or sub-globose, subtriquetrous, acu- 
minate-rostrate, bifid, scabro-pubescent, about equal to the ovate, acuminate 
glume; st. 6—15’ high, erect, slender, purple towards the base. Pale green.— 
Dry woods and hedges; common. ; 
B. pedicellata. Dew, has pistillate spikes ovate-oblong, short-pedicellate, 
erect, loose-flowered ; perig. more numerous.—Grows in the same situations. 
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