66 
CYPERACEAE. 
' 14. Aeorastachyae. 
Spikes several, short, but dense-flowered, long-peduncled and drooping, 
somewhat remote, the terminal staminate, the lateral gynaecandrous; bracts 
narrow, sheathless; scales dark-colored, lanceolate-acuminate, longer than 
the perigynium, which is stipitate, erect, orbicular to obovate gibbous, papil¬ 
lose, nerved, with a short, entire beak; stigmata 3. 
One species. 46. C. magellanica. 
15. Cenchrocarpae. 
Spikes several, loose-flowered, peduncled, but erect, contiguous, the ter¬ 
minal staminate or gynaecandrous, the lateral pistillate; bracts foliaceous, 
sheathing; scales dark or greenish; perigynium erect, turgid, glabrous, dis¬ 
tinctly several-nerved, the beak short or none; stigmata 3. 
Terminal spike staminate or gynaecandrous; perigynium globose, orange-colored, 
beakless or nearly so. 47. C. aurea. 
Terminal spike staminate; perigynium obovate, greenish, abruptly beaked, with 
the orifice hyaline. 48. C. Torreyi. 
16. Leiochlaenae. 
Spike one, lax and few-flowered, androgynous; scales hyaline, mucronate; 
perigynium erect, pale-green, stipitate with a short beak or beakless. 
Perigynium many-nerved, elliptical, emarginate, beakless. 49. C. polytrichoides. 
Perigynium oval, two-nerved, shortly beaked. 50. C. Geyeri. 
17. Athrochlaenae. 
Spike one, dense and many-flowered, androgynous, the pistillate portion 
squarrose at maturity; scales lanceolate to oblong, deciduous; perigynium 
shining, brown, reflexed at maturity, ovate to linear-oblong, prominently 
stipitate, nerveless, tapering into a long beak; stigmata mostly 3. 
Rootstock creeping, stoloniferous; leaves flat; perigynium ovate, the beak two- 
lobed. 51. C. nigricans. 
Rootstock caespitose, matted; leaves very narrow, involute; perigynium linear- 
oblong, the beak obliquely cut. 52. C. pyrenaica. 
18. Stenocarpae. 
Spikes several, very dark, dense-flowered, borne on long, capillary pedun¬ 
cles, more or less drooping, the terminal gynaecandrous, the lateral pistil¬ 
late; scales very dark, acuminate; perigynium purplish, erect, attenuated at 
both ends, compressed, nerveless, the beak long, serrulate, with the orifice 
oliquely cut to bifid, hyaline; stigmata 2 or 3. 
One species. 53. C. misandra. 
19. Lamprochlaenae. 
Spike one, short and few-flowered, androgynous; scales broad, brownish; 
perigynium obovate to elliptical, obscurely nerved or nerveless, the beak 
short, with the orifice entire or obliquely cut; stigmata 3. 
