370 9C. CYPERACEvE. 



])oiBt with membranous edges serrulate above, nut elliptical with 

 a short cylindrical beak terminating in the persistent style, gl. 

 lanceolate as long as the fruit. — E. B. 306. Schk. B. 8. C. lepo- 

 rina H. a. 22, R. 211. — St. 1 — 2 feet high, triangular, smooth 

 or roughish above. Gl. lanceolate, acute, brown with a paler 

 membranous margin. Fr. yellowish. — Meadows. P. VII. 



iii. Heterostachyce. Spikes separate, one or more terminal 

 wholly or rarely only partially barren, the others fertile. 



* Beak of fr. short, entire or emarginate or shortly 2-toothed. 



t Nut plane- convex. Stigmas 2, rarely 3. Barren spikes 1 or 



more. 



X Stigmas 2. Sheaths of leaves webbed. Fertile spikes erect. 

 L. ultimately revolute-edged j lowest sheaths usually leafless. 



26. C. striata (Good.); fertile spikes erect elongate-cylin- 

 drical, bracts auricled lowermost leaflike short, /r. oblong-ellip- 

 tical acute compressed veined closely imbricated, nut nearly round 

 shortly beaked, sheaths of 1. with filamentous network. — E. B. 

 914. R. 230. C. ccespitosa H. and A. — Densely caespitose. 

 St. 2 — 3 ft. high, triquetrous, rigid. L. short, narrow. Fertile 

 spikes often barren at the top Gl. blunt or acute, equalling or 

 sliorter than the fr , narrow, dark purple ; keel green. Fr. in 6 — 9 

 regular rows. — Marshes. P. VI. 



[27. C. ccespitosa (L.) ; fertile spikes erect subsessile oblong, 

 bracts with long narrow auricles lowest slender leaflike short, 

 fr. elliptical lenticular not veined rather patent, sheaths of 1. 

 finely webbed. — R. 229. C. pacifica Drej. — Cjespitose. St. 

 slender, acutely triangular. St. lax. L. shorter downwards. 

 Spikes close together. Gl. lanceolate, dark purple ; keel rather 

 paler. — "Britain. Dr. Greville." Fries. P. V.] 



XX Stigmas 2. Sheaths not webbed, usually all bearing leaves. 

 L. ultimately revolute-edged. Stoloniferous. 



28. C. acuta (L.) ; barren sjiikes 1 — 3, fertile 2 — 4 slender 

 cylindrical-acuminate erect with' fruit, lowermost bract leaflike 

 often overtopping the stem with elongate auricles, fr. oblong len- 

 ticular veined, nut roundish-obovate with a short slender beak, 

 gl. acute.— £. B. 580. Schk. Ee. Ff. 92. H. a. 44. R. 231, 232. 

 — St. 2 — 3 feet high, triquetrous, rough at top. L. broad. 

 Gl. narrow-lanceolate, acute, on the male spikes spathulate-lan- 

 ceolate, purple with a green keel. Fr. pale, blunt or acute, round 

 or oval, spherical or flattened. Fertile sjiikes usually with a few 

 barren fl. at the end, nodding with flowers. — Wet places. P. VI. 



