396 97. CTPBEACEJE. 



slender, erect. Glumsa deciduous. Fr. dark brown. — Bogs. 

 P. VI. E. S. I. 



** Spike male at the top. Stigmas 2. 



4. C. rupes'tris (All.) ; half of spike male, fr. obovate tri- 

 gonous with a very short beak adpressed scarcely longer than 

 the persistent gl., nut obovoid acutely triquetrous, 1. flat. — 

 i:.B.S.28U. S.h.4:. J?. 198.— Soboliferous. St. 3— 6 in. 

 high, triquetrous, rough upwards. L. ending in a wavt/ rough 

 slender triangular ^oiW. Gl. fuscous. Fr. paler. — Lofty moun- 

 tains. P. VIL S. 



5. C. paucijldra (Lightf.) ; 1 — S terminal Jl. mdle,fr. 2 — 4 

 lanceolate-subuhte terete patent or reflexed longer than the deci- 

 duous gl., nut lineai'-oblong trigonous, 1. involute. — E. S. 2041. 

 Schk. A. 4. H. b. 1. B. 196.— Soboliferous, St. usually about 

 5 inches high, slender. L. 2 or 3, much shorter than the stem. 

 Fr. pale yellow.— Bogs in the North. PI. VI. VII. E. S. 



ii. Homostachym. Spikelets in a compound continuous or inter- 

 rupted spike, male at one or both ends or nearly unisexual. 

 Nut plane-convex or compressed. Stigmas 2. (Sp. 6 — 24.) 



t Spikelets nearly unisexual. Sobole far-creeping, 



6. C. dis'ticha (Huds.) ; spikelets in an oblong interrupted 

 spike upper and lower OT^es fertile intermediate mostly male, fr. 

 ovate-lanceolate veined narrowly margined bifid with serrate 

 edges above, nut oval, gl. shorter than the fr. acute its midrib 

 not reaching the top, st. with rough angles. — C> intermedia 

 Good., E. B. 2042. Schh. B. 7. H. a. 14. R. 210.— Height 

 1 — 2 feet. Fr. about as long as gl. ; usually abortive and twice 

 as long. Lower bract with a slender leaflike point. — Marshy 

 places. P. V. VI. E. S. 1. 



7. C. arendria (L.) ; spikelets in an oblong interrupted spike 

 upper ones male lower fertile intermediate male at the end,/r. 

 ovate y&m&Si winged waA serrulate /j-om the middle to the bifid 

 top of the beak, nut bluntly ovoid, glumes longer than the fr. 

 acuminate, st. rough above. — E. B. 921. Schk. B. & Dd. 6. 

 H. a. 13. R. 209.— Height 1 foot. Sobole superficial, very 

 long. Lowermost bracts with slender leaflike points. — Sandy 

 places. P. VI. E. S. t. 



t+ Spikelets male at the top. — % Sohole far-creeping. 



8. C. incur'va (Lightf.) ; spikelets in a roundish head, fr. 

 inflated broadly ovoid acuminate-rostrate, beak split externally, 



