Plend.ph. 9. CYPERACE^. 40. Sclrpus. 77 



1 1 . Scirpus sylvaticus. Wood rusk. 



Panicle very branched, corymbose, bracteate ; culm 

 S-sided, leafy ; spikelets crowded ; glumes not nicked, mu- 

 cronate ; IractecB 3, leaflikej unequal, 



Cyperus gramineus, Rail Syn, 426, 5. 

 Cyperus gramineus miliaceus, Qer. em. 30. 

 Pseudocyperus miliaceus. Park. 1171. 

 Scirpus sylvaticus, Lin. S. P. 175. 

 Millet cyperus grass. 



Damp woods ; perennial ; July. 



Cidrn single, upright, 2 feet high, hollow at top, leafy ; 

 leaves broad, acute, shining; sheaths smooth ; ligula small; 

 Iractece 2 or 4i, lower longer than the panicle; upper small, 

 loose, truncated ; spikelets dark green. 



X. 41. ELEOCHARIS. R. Brown. Cluhrush, 



Spathelle 1 , all alike fertile ; glumelles bristlelike, bristles 4, 

 denticulate ; style dilated at bottom, jointed to the ovary ; 

 stigmata 2 or 3; akenium lenticular, dilated at bottom, 

 crowned with the hardened style. — Root annual, fibrous, 

 or perennial, creeping, horizontal ; culm simple, round or 

 angular, smooth; sheaths truncated, leafless; spike 1, ter- 

 minal, upright, naked ; glume imbricate all round ; leaves 0, 

 except on the barren culms. 



a. Culm bristly f threadshape, angular ; root fibrous. 



1. Eleocharis acicularis. Needlelike clubrush. 



Culm 4-angled, bristly ; spike ovate, acute ; bractea half 

 the length of the spike ; root fibrous ; stigmata 3. 



Scirpus minimus capitulis equiseti, Eaii Syn. 429,8. 



Scirpus acicularis, Lin. S. P.ll. 



Cyperus acicularis, With. 78. 



Eleocharis acicularis, Rcemer Sys. Veg, 154. 



Wet heaths and bogs ; perennial ; August. 



Root fibrous, in tufts ; culms many ; sterile culms long, 

 recurved, obtuse, threadshape, smooth, knotty ; sheaths very 

 fine; spikes 5 to 11 -flowered, turning black; glumes ovate, 

 obtuse, rib green ; akenium white, shining ; bristles 4, fall- 

 ing off. 



& 



b. Culm round; root creeping. 



2. Eleocharis palustris. Marsh clubrush. 



Culm round; spike oblong; glumes lanceolate, acute; 

 root creeping ; stigmata 2 ; bractece very small. 



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