CAKEX. 401 



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

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



25. C. stric'ta (Good.) ; fertile spikes erect long cylindrical, 

 bracts auricled lowermost leaflike short, fr. oblong-elliptic acute, 

 compressed veined closely imbricate, nut roundly o'bovoid shortly 

 beaked, sheaths of 1. -witiijilamentom network. — -B. S. 914. R. 

 230. C. ccespitosa Gay. — Bensely ocespitose. St. 2 — S ft. high, 

 triquetrous, 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.— Marshes. V. VI. E. S. I. 



%X stigmas 2.Sheath not webbed, usually all bearing leaves. 

 L. ultimately revolute-edged. Stoloniferous. 



26. C. acuta (L.) ; male spikes 1 — 3, fertile 2 — 4 slender cylin- 

 drical-acuminate erect with fruit, lowermost bract leaflike often 

 overtopping the stem with long auricles, fr. oblong lenticular 

 wine^Z, nut roundish-oboToid with a short slender beak, gl. acute. 

 —E. B. 580. Schk. Ee. & Ef. 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, 

 pm'ple 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. — Syme mentions a 

 casspitose form or distinct species (C. prolixa Fr, ?). — Wet 

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



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

 shortly cylindrical dense subsessile, lower bract leaflike, fr. 

 elliptic lenticular without veins, nut roundish blunt with a slender 

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

 with deflexed edges.— E. B. 2047. H. a. 40. B. 225. Cisaxor- 

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

 rigid. Bracts without sheaths. Spikes near together, short, 

 rarely narrowed and laxly flowered below. Gl. about exceeding 

 the fr., purple with a green keel. Nut rather longer than 

 broad. — In wet and stony places on mountains. P. VI. VII. 



E.S.I. 



WX stigmas 3. Sheaths not webbed. Fertile spikes erect. 

 Edges of leaves ultimately involute. Glumes narrower than 

 the fruit. 



28. C. aquat'ili^ (Wahl.) ; spikes erect, male 1 or more, fer- 

 tile 3 or 4 long narrowed below lower ones stalked, bracts leaf- 

 like erect overtopping the stem,/r. elliptic lenticular ^Bithout 



