80 IIORTUS GRAMINEUS WOBURNENSIS. 



PANICUM patens, per. spreading, nat. India — Portugal. R. S. 



Linn. Sys. Veg. i. p. 454. 

 multinode, per. many-jointed, nat. Isle of France, ibid. 

 (aistafum, per. awned, nat. China, ibid. p. 455. 

 sahulorum, per. awl-shaped, nat. Montevideo, ibid. 

 nervosum, per. nerved-leaved, nat. Cayenne, ibid. 

 laxiftorum, ann. loose-flowered, nat. Virginia, ibid. 



agrostoides, arm. agrostis-like, nat. , ibid. p. 356. 



myuros, ann. mouse-tail, nat. Guinea, ibid. 



hirium, ann. hairy-husked, nat. Cayenne, ibid. 



amplexicaule, ann. stem-clasping, nat. Guinea, ibid. 



Bobartii, ann. Bobarts', nat. America, ibid. p. 457. 



altissimum, ann. tall (P. altissimum, Hort. Paris), nat. unknown, 



ibid. 

 rectum, ann. upright, nat. Pennsylvania, ibid. 

 ahludens, ann. unlike, nat. E. Indies, ibid. 

 canescens, ann. grey, nat. E. Indies, ibid. p. 457. 

 Isachne, ann. tiled-branched, nat. E. Indies, ibid. p. 458. 

 pilosissimum, ann. pilose-leaved, nat. Essequebo, ibid. 

 Mertensii, ann. Mertens', nat. Essequebo, ibid. 

 scaberrimum, ann. very rough, or tuberous-rooted, nat. New 



Spain, ibid. 

 Heynii, ann. Heyn's, nat. E. Indies, ibid. 



* Species with solitary spikes and naked flowers. 

 varum, ann. scarce, nat. New Holland. Brown, Prodr. 1. c. 



p. 189. 

 phleoides, ann. cat's-tail-like, nat. New Holland. Brown, 1. c. 

 mi/sosuroides, ann. creeping-culmed, nat. N. Holl. Brown, 1. c. 

 arcuatum, ann. arched, nat. N. Holl., ibid. 



** Spikes alternately undivided, half-awnless. 

 sirictum, ann. straight, nat. N. Holl. ibid. p. 190. 

 gracile, ann. slender, nat. N. Holl. Brown, 1. c. 

 argenteum, ann. silvery, nat. N. Holl. Brown, Prodr. 

 holosericiceum, silky-flowered, ibid. 

 polyphijUum, ann. leafy-culmed, ibid. 



*#* Sub-panicled, spikets divided, alternately awnless. 

 marginatum, ann. margined-leaved, ibid. 

 airoides, ann. hair-grass-like, ibid. 

 pubigerum, ann. pubescent-culmed, ibid. 

 foUosum, ann. leafy, ibid. 

 paucijiorum, ann. few-flowered, ibid. 



