370 96. CYPERACE^. 



point 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. 12 feet high, triangular, smooth 

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

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



iii. Ueterostachyfe. Spikes separate, one or more terminal 

 wholly or rarely only partially barren, the others fertile. 



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



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

 more. 



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

 L. ultimately revolut e-edged j lowest sheaths usually leafless. 



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

 drical, bracts auricled lowermost leaflike short, fr. 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. cxspitosa H. and A. Densely csespitose. 

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

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

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

 regular rows. Marshes. P. VI. 



[27. C. Cfsspitosa (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. Csespitose. 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.J 



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

 L. ultimately revolute-edged. Stoloniferous. 



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

 cylindrical-acuminate erect w r ith 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. E. 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 grefcn keel. Fr. pale, blunt or acute, round 

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

 barren fl. at the end, nodding withfowers. Wet places. P. VI. 



