Jranicum. triandria digynia. 311 



B.oot fibrous, white — Culms many, ramous, below re«iting on 

 the ground and rooting; above erect, a little compressed, smooih ; 

 from two to i'oiir feet high. — Leaves short and sharp, inside a lit- 

 tle downy ; sheaths shorter than the joints ; mouths bearded. In 

 paludouim they are surrounded on the inside with hair. Here the 

 ramifications are compressed, and somewhat four-sided, there trian- 

 gular, and hispid. — Panicle more contracted than in paludosum. — 

 Calyx the same. — Corul, with a conipiete male floret. — ieec/ oblong, 

 smooth. 



Obs. To distinguish it from P. paludosum, attention must be 

 paid to the leaves, ramifications of the panicle, and male fiorets. 



45. P. sarmentosum. R. 



Perennial, inane, hairy, sarmentose, with sub-erect, floriferous 

 shoots from the juints. Panicle patent. Flozcers solitary; ca/i/ces 

 smooth and obtuse, containing one hermaphrodite and one neu- 

 ter floret- 



A native of Sumatra ; and from thence introduced by Dr. Charles 

 Campbell into tiie Botanic Garden in 1804, where it grows luxu- 

 riantly, and blossoms throughout the year. 



Culms round, sarmentose, and of great length, inane, with near- 

 ly erect, frequently ramous, tioriterous shoots of about two or three 

 feet in height rising from the joints ; every part clothed with, 

 much soft hairy pubescence, particularly the runners. — Leaves en- 

 siform, soon becoming reflex, margins hispid, length fiom six to 

 twelve inches, from half to three quarter of an inch in bieadth at 

 the broadest part. Sheaths rather longer than the joints.- -Pa- 

 iiicle terminal, ovate ; composed of many, single, alternate, patent, 

 compound, smooth branches. — Flowers very numerous, awnless, 

 smooth, solitary, pedicelled — Valves of the calyx three, obtuse, 

 slightly marked with green nerves, the exterior one long, coutainmg 

 a tvvo-valved hermaphrodite flower, and a small neuter one. 



46. P. miliare. Lamarck. 



Culms erect^ ramous, from two to three feet high, smooth. Pa- 



