CAKEX. 461 



iii. Heterostachyce. One or more terminal spikes wholly or rarely 

 only partially male, others axillary fertile. (Sp. 26 74.) 



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

 f Nut plane-convex. Stigmas 2 3. Male spikes 1 or more. 



| Stic/mas 2. Sheaths of leaves webbed. Fertile spikes erect. 

 L. ultimately resolute-edged j lowest sheaths usually leajless. 



26. C. eldta (All.) ; fertile spikes erect or rarely drooping 1 

 long cylindrical, bracts auricled lowermost leaflike short, fr. 

 oblong-elliptic acute compressed veined closely imbricate, nut 

 roundly obovoid shortly beaked, sheaths of 1. with filamentous 

 network. E. B. 914. R. 230. C. stricta (Good.) ed. viii. 

 C. ccespitosa Gay. Densely ccespitose. St. 2 3 ft. high, tri- 

 quetrous, rigid. L. short, narrow. Fertile spikes often male 

 at the top. Gl. blunt or acute, equalling or shorter than the 

 fr., narrow, dark purple ; keel green. Fr. in 6 9 regular 

 rows. [C. turfosa (Fr.). A stoloniferous plant with filamentous net- 

 work, intermediate between Sp. 26 and 31, is recorded from Surrey and 

 Cambs.] Marshes. P. VI. E. S. I. 



tt Stigmas 2. ' Sheaths not webbed, usually all bearing leaves. 

 Stoloniferous. 



27. C. acuta (L.) ; male spikes 1 3, fertile 2 4 slender 

 cylindrical- acuminate erect with fruit, lowermost bract leaflike 

 often overtopping the stem with long auricles, fr. oblong lenti- 

 cular veined, nut roundish-obovoid with a short slender beak, <rl. 

 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- 

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

 round or oval, spherical or flattened. Fertile spikes usually 

 with a few male fl. at the end, nodding with flowers. [C.prolixa 

 (Fr.), csespitose, with fr. compressed, more strongly nerved, shorter 

 than the long tapering gl., is recorded from Cambs. and Norf. ; and C. tri- 

 costata (Fr.), stoloniferous, with young fr. ventricose becoming compressed 

 3- veined, longer than the small obtuse gl., is recorded from N. of Ireland.] 

 Wet places. P. VI. E.S.I. 



28. C. rig'ida (Good.) ; spikes erect, male 1, fertile oval or 

 shortly cylindrical dense subsessile, lower bract leaflike, fr. 

 elliptic lenticular witlwut veins, nut roundish blunt with a slender 

 beak, st. triquetrous rough towards the top, /. curving outwards 

 with de-flexed edges. E. B. 2047. H. a. 40. R. 225. C. saxa- 

 tilis L. ? St. 6 in. to a foot or more high. L. broad, flat, keeled, 



