CAREX. 365 



** Spike barren at the top. Stigmas 2. 



3. C. pulicaris (L.) ; half of spike barren, fr. remote at length 

 deflexed oblong-lanceolate compressed, nut oblong-obovate plane- 

 convex. E. B. 1051. Schk. A. 3. H. a. 3. R. 195. St. 

 slender, 6 12 in. or more in height, erect, smooth. L. slender, 

 erect. Glumes deciduous. Fr. dark brown. Bogs. P. VI. 



*** Spike barren at the top. Stigmas 3. 



4. C. rupestris (All.); half of spike barren, fr. obovate tri- 

 gonous with a very short beak adpressed scarcely longer than 

 the persistent gl., "nut obovate acutely triquetrous." E. B. S. 

 2814. H. b. 4. R. 198. Stoloniferous. St. 36 in. high, 

 triquetrous, rough upwards. L. flat, ending in a tortuous rough 

 slender triangular point. Gl. fuscous. Fr. paler. Lofty moun- 

 tains. P. VII. S. 



5. C.pauciflora (Lightf.); 1 3 terminal fl. barren, fr. 2 4 

 lanceolate-subulate terete patent or reflexed longer than the 

 deciduous gl., nut linear-oblong trigonous. E. B. 2041. Schk. 

 A. 4. H. b. 1. R. 196. Stoloniferous. St. usually about 5 

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

 Fr. pale yellow. Bogs in the north. P. VI. VII. E. S. 



ii. HomostacJiycB. Spikelets barren at one or both ends in a 

 compound continuous or interrupted spike. Nut plane-convex 

 or compressed. Stigmas 2. 



f Spikelets barren at the top. % Rhizome far-creeping . 



6. C. incurva (Lightf.) ; spikelets in a roundish head, fr. 

 inflated broadly ovate acuminate-rostrate, beak split externally, 

 nut obovate, st. smooth about equalling the leaves. E. B. 927. 

 Schk. Hh. 95. H. a. 5. R. 199. St. 23 in. high, usually 

 recurved so as to bring the large head down to the ground. 

 Beak of fr. usually rather scabrous. Sandy shores of the north. 

 P. VI. S. 



7. C. divisa (Huds.) ; spikelets in a somewhat ovate head,/r. 

 plane-convex ovate many-veined, beak acutely bifid with finely 

 serrated edges, nut broadly oblong, gl. with an excurrent rib, 

 lowermost bract leaflike, st. roughish at the top. E. B. 1096. 

 St. slender, a foot high. Fr. veined on both sides. Spike 

 often interrupted below. Near the sea on the southern and 

 eastern coasts. P. V. VI. E. I.? S.? 



8. C. disticha (Huds.) ; spikelets in an oblong interrupted 

 ipike upper and lower ones fertile intermediate barren, fr. owte- 



