Cyperaceae. 157 



CA'REX RIPA'RIA (72). Great Common Sedge. 5. Stem 3—5 ft. 



(1622) stout rough, leaves ^ — f in. broad rough keeled, staminate spikelets 

 terminal stout, pistillate spikelets cylindrical long stout inclined, bracts 

 broad, perigynia ovoid ribbed with a short 2-toothed beak. River 

 banks and ditches. 



CA'REX SYLVAT'ICA (83). Pendulous Wood-Sedge. 5—6. Stem 

 (1609) slender i — 2 ft. tufted, leaves bright green flat soft broad, spikelets 



with long pedicels very slender loose drooping, perigynia loose with a 



long slender bifid beak. Damp woods. 



Ca'rex strigo'sa (35). Loose Pendulous Sedge. 5 — 6. Stems 2^—2 ft. 

 (1607) leafy tufted, leaves flat broad, spikelets very slender loose drooping 

 with long pedicels, perigynia smooth without a beak. 



[G. {Settle, Arncliffe), C. CI. 



CA'REX FLA'VA {58). Yellow Sedge. 5—6. Stems ^ -U ft. tufted, 



(1616) leaves flat yellowish-green, staminate spikelet erect i in. fusiform, 



pistillate spikelets \ — \ in. oblong, bracts long, sheaths including the 



stalks of the spikelets, perig}'nia inflated with a long slender sometimes 



recurved beak. Heaths and bogs. 



CA'REX DIS'TANS (78). Loose Sedge. 6. Stems i— i^ ft. slender 



(16 1 2) tufted, leaves flat, bracts leafy not overtopping the stem with long 



(1614) sheaths, staminate spikelets slender, pistillate spikelets i — 3 very 

 distant erect cylindrical. Marshes and wet meadows. 



CA'REX BINER'VIS (93). Green-ribbed Sedge. 6—7. Similar to C. 



(161 1) distans but taller with very slender stems, the pistillate spikelets 

 browner more numerous stouter and longer with dark purple glumes 

 with a green midrib, fruit with two principal green ribs. Heaths and 

 moors. 



CA'REX LAEVIGA'TA (54). Smooth-stalked Beaked Sedge. 6. Stem 

 {1610) I — 3 ft., leaves \ in. broad, bracts leaflike sheathing, spikelets distant 

 long-pedicelled drooping, fruit furrowed with a long slightly rough- 

 edged beak. Marshes and wet places. 



W.—SCHCENUS. 



SCHCE'NUS NI'GRICANS (70). Bog-rush. 6—7. Stems 6—18 in. 



(1550) naked round wiry in hard tufts with numerous black or reddish-brown 

 sheaths terminating in short rigid leaves, flowers conspicuous from the 

 yellow anthers in an obovate bracteate spike of numerous compressed 

 spikelets with dark glumes. Bogs and wet moors, 



\\\.—ISOLEPIS. 



ISOLE'PIS SETA'CEA (100). Bristle-stalked Mud-rush. 7—8. Stem 



(1531) 3 — 6 in. filiform rigid tufted, leaves short setaceous, spikelets 1—3 in 



a lateral rounded head, stamens 2 — 3, stigmas 8. Sandy damp places. 



