Cyperus. TRIANDRIA MONOGYNIA« 21} 
largest about a foot, or fifteen inches long, all are smooth.—Invo- 
lucels three-leaved, length of the umbellets.— Flowers remote, scales 
obtuse.— Seed three-sided. 
40. C. tegetum. R. 
Leafless, culms from three to six feet high, angles rounded, umbel 
decompound. Jnvolucre as long, and longer than the umbel ; invo- 
' lucels chaffy. Spikelets linear-lanced, alternate. Seed clavate, three- 
sided. = 
Hind. and Beng. Madoor-kati. 
Is common in ditches, borders of lakes, &c. in the vicinity of Cal- 
cutta during the rains. 7 e a 
Root creeping under ground, perennial.— Culms naked, gene- 
rally from three to six feet high, obsoletely three-sided, smooth.— 
Leaves no other than two or three sheaths embracing the base of the 
culms.— Uribe! decompound ; umbellets sub-sessile, and on pe- 
duncles of various lengths, sub-erect.— Involucre about four-leav- 
ed, one or two of them longer than the umbel.—JInvolucels minute. 
— Spikelets alternate, linear-lanceolate, many-flowered.— Seeds elip- 
tically triangular. ~ ; ; 
Obs. Those elegant, useful, durable, large mats so common on 
the floors of rooms in and about Calcutta, are made of the culm of 
this plant. When green they are split into three or four pieces, 
Which in drying contract so much as to bring the margins in 
contact, or to overlap each other; in this state they are wove. 
41. C. alopecuroidus. Rottb. gram. 38. t. 8. f. 2. Vahl. Enum. . 
Pi. 2. 368. 
Culms from four to five feet high. Umbel decompound ; involucre 
; three-leaved, spikes nodding, spikelets alternate, many-flowered. 
Wara-pulla. Rheed. mal. 19. p. 77. t. 42. d 
Cyperus glomeratus. Linn. Sp. Pl. ed. Willd. 12.277. .— 
This is also a large species, and a native of the same places. ; 
Root fibrous.—Culms erect, from four to five feet high, except 
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