Sderia.~] Cyperacece. 9 7 



7. S. zeylanica, Poir. Encycl. Meth. vii. 3 (1806). 



Thw. Enum. 435. S. lateriflora, Boeck. in Linnaea, xxxviii. 455, and 

 S. Thwaitesia?2a, Boeck. 1. c. 454. C. P. 3318, 3796, 3797. 

 Fl. B. Ind. vi. 687. 



A densely tufted, glabrous, or very sparsely hairy 

 perennial ; rootstock small, hard, or o ; stems 6-10 in., 

 slender, leafy ; 1. as long as the stem or longer, narrowly 

 linear, tV- <j in. broad, erect, flat or the narrower concave, 

 3-veined, sheaths closed, trigonous, truncate with a short, 

 obtuse, pubescent ligule opposite the limb ; clusters or some- 

 times short spikes of spikelets small, solitary in the axils of 

 many of the leaves, appearing to be sessile at the mouths of 

 the sheaths, or with the peduncle exserted ; fruiting spikelets 

 few in each cluster, about ^ in. long ; glumes 3, glabrous or 

 sparsely hairy, upper ovate-oblong, acuminate, shortly cus- 

 pidate; disk very short, obtusely 3-lobed ; nut globose, smooth 

 or faintly cancellate in vertical lines, white. 



Moist low country below 1000 ft.; rather common. Kukul Korale ~ r 

 Ratnapura; Hewesse, &c. Fl. April, July. 



Also in Nicobar Is., Burma, and Borneo. 



There are three forms of this plant in Herb. Peraden. C. P. 3318 has 

 long, broad, flat, flaccid leaves, like those of Diplacrwn carianum, and 

 clusters of very short spikes of spikelets at the mouths of the sheaths. 

 C. P. 3796 has much narrower leaves, but similar infl. to 3318. C. P. 

 3797 has very long, narrow, concave leaves, about yg- in. broad, and long- 

 peduncled spikes of spikelets. — J. D. H. 



8. S. elata, Thw. Enum. 353 (1864) (chiefly). 

 Boeck. in Linnaea, xxxviii. 487. C. P. 3030, 3032. 

 Fl. B. Ind. vi. 690. 



Stem tall, stout, leafy, triquetrous, angles scaberulous ; 

 1. 1-2 ft. by § in. broad, or narrower, narrowed into a long, 

 filiform, obtuse tip, rigid, flat, 3-veined, margins scabrid, 

 sheaths trigonous, or triquetrous, mouth truncate, or produced 

 into a very short rounded coriaceous ligule opposite the 

 blade ; spikelets very numerous, pale or dark brown, sub- 

 solitary on the branches and branchlets of large, long- 

 peduncled, oblong, decompound, puberulous, leafy panicles 

 6-10 in. long, branches of panicle and spikelets with capillary 

 bracteoles \-\ in. long ; frg. spikelets \ in. long ; glumes 

 3, broadly ovate, cuspidately acuminate, glabrous ; disk-lobes 

 very short, rounded ; nut broadly ellipsoid, subtrigonous,, 

 apiculate, \ in. long, shallowly cancellate, finely puberulous,. 

 white. 



Moist low region ; rather common. Galle ; Kalutara ; Hiniduma. 

 Fl. Sept., March. 



Also in India, Java, and China. 



Differs from S. chinensis (in so far as Ceylon specimens show) in the- 

 PART v. H 



