356 MONCECIA TRIANDRIA. [CL. XXI. 



places : not uncommon. Eng. Bot. vol. xiii. pi. 914. Eng. FL vol. 

 iv. p. 119. 1336. 



****** Barren flowers and fertile flowers in separate catkins. 

 Barren catkins two or more. 



53. C. aqudtilis. Straight-leaved Water Car ex. Stigmas two ; 

 sheaths none; catkins cylindrical, elongated, attenuated below, 

 with barren flowers at the extremity ; fruit inversely egg-shaped, 



with a short entire point. Straws from one to two feet high ; 



leaves long, straight, linear, not fibrous at the base. Perennial : 

 flowers in July and August : grows in boggy ground in the Clova 

 mountains, Forfarshire. Eng. Bot. Suppl. pi. 2758. Brit. Fl. 4th 

 ed.p. 336. 1337. 



54. C. acuta. Slender -spiked Carex. Stigmas two ; sheaths none ; 

 catkins cylindrical, slender ; fruit elliptical, with an obtuse, undi- 

 vided point. Straws two or three feet high, with rough angles : 



leaves broad, rough on the edges and keel. Perennial : flowers in 

 May : grows about ditches, pools, and rivers : common. Eng. Bot. 

 vol. ix. pi. 580. Eng. Fl. vol. iv. p. 119. 1338. 



55. C. paludosa. Lesser Common Carex. Sheaths none, bracteas 

 very long, leafy ; catkins cylindrical, erect, obtuse, the fertile ones 

 with long-pointed scales ; fruit egg-shaped, three-cornered, com- 

 pressed, with a notched beak. Straw two or three feet high, 



with rough corners : leaves broad, rough on the edges and keel. 

 Perennial : flowers in May : grows in marshes and about the edges 

 of ditches, pools, and rivers : common. Eng. Bot. vol. xii. pi. 807. 

 Eng. FL vol. iv. p. 120. 1339. 



56. C. ripdria. Great Common Carex. Sheaths none ; bracteas very 

 long, leafy ; catkins erect, cylindrical, with long-pointed scales ; 



fruit egg-shaped, tumid, with a deeply-cleft beak. Straw three 



or more feet high, erect, with very rough, sharp corners : leaves 

 broad, erect, rough on the keel and edges. Perennial : flowers in 

 April and May : grows at the edges of pools, ditches, and slow rivers. 

 Eng. Bot. vol. ix. pi. 579. Eng. FL vol. iv. p. 121. 1340. 



57. C. lavigdta. Sheaths elongated, shorter than the flower- 

 stalks ; catkins cylindrical, fertile ones drooping ; scales pointed ; 



fruit egg-shaped, three-cornered, with a cleft beak. Straws from 



two to four feet high, three-cornered. Perennial : flowers in June : 

 grows in marshy places: frequent. Eng. Bot. vol. xx. pi. 1387. 

 Eng . Fl. vol. iv. p. 1 22 . 1 34 1 . 



58. C. vesicdria. Large-fruited Bladder Carex. Sheaths none ; 

 fertile catkins cylindrical, short, abrupt, on short stalks ; scales 

 lance-shaped, acute ; fruit inversely egg-shaped, inflated, with a 



long cleft point. Straw two feet high, erect, with very sharp 



rough corners. Perennial: flowers in May: grows in marshes and 

 wet meadows ; frequen. Eng. Bot. vol. xi. pi. 779. Eng FL vol. iv. 

 p. 123. 1342. 



59. C. ampulldcea. Small-fruited Bladder Carex. Sheaths none; 

 fertile catkins cylindrical, elongated, nearly sessile ; scales lance- 

 shaped, acute ; fruit globular, inflated, with a slender cleft beak. 



Straw from one to two feet high, with obtuse corners, rough at 



the top. Perennial : flowers in May : grows in bogs and marshes: 

 common. Eng. Bot. vol. xi. pi. 780. Eng. Fl. vol. iv. p. 124. 1343. 



60. C. hirta. Hairy Carex. Hairy ; sheaths elongated, nearly as 

 long as the flower-stalks ; fertile catkins short, cylindrical, distant ; 



