30 COUNT FICALHO AND W. P. HIERN 
Allied to Panicum serratum, Br., and P. gossypinwm, A. Rich., but well distinguished ; 
the black foot-stalks of the spicule are curious. (Monro, MS. in Herb. Kew.) 
Serpa Pinto, no. 41. 
39. PANICUM MAXIMUM, Jacq. Ic. Pl. Rar. i. p. 2, t. 13 (1781); Steud. Syn. Pl. Gram. 
p. 72, n. 469 (1855) ; vel aff. 
Our specimen is hirsute on the sheath of the uppermost leaf, is a less robust form; 
and the inflorescence is less umbellate than is usual in this species, which is widely 
spread over the tropics, and is said originally to have been native on the African con- 
tinent; it also occurs at Natal. 
Serpa Pinto, no. 48. 
40. PANICUM INSIGNE, Steud. Nomencl. Bot. edit. 2, pars ii. p. 258 (1841); Steud. Syn. 
РІ. Gram. p. 92, n. 747 (1855).  T'richolena grandiflora, Hochst. in Herb. Schimp. 
Abyss. i. n. 205 ; A. Rich. Tent. Fl. Abyss. ii. p. 445 (1851). 
This species occurs also in Abyssinia and South Africa. 
Serpa Pinto, nos. 36, 50. 
41. ARISTIDA BARBICOLLIS, Trin. et Rupr. Sp. Gram. Stip. р. 151 (1842); Steud. Syn. РІ. 
Gram. p. 141, n. 106 (1855). Chetaria Forskolu, Nees ab Es. Fl. Afr. i. p. 188 
(1841), excl. syn. | 
This species occurs also in eastern districts of the Cape of Good Hope, in Natal, in the 
'Transvaal, and in Zululand. 
Serpa Pinto, no. 45. 
49. ARISTIDA VESTITA, Thunb. Prodr. i. p. 19 (1794); Kunth, Enum. Gram. i. p. 197, 
n. 74 (1833); Steud. Syn. Pl. Gram. p. 142, n. 113 (1855). 
'This species occurs also in other parts of South Africa. 
Serpa Pinto, no. 49. 
43. SPOROBOLUS LEPTOSTACHYS, Sp. n. 
. Our specimen is without leaves, but is sufficient for the determination of the genus, 
and differs from the described species of this genus. The specimen in the dry state is of 
a pale straw-colour throughout; the portion of the stem extant is terete, smooth, 
glabrate, shining, slightly wavy near the top below the spike, and measures, exclusive 
of the spike, 7% т. The spike is very narrowly cylindrieal, 43 in. long, $ in. diam., 
ierete, and without braets at the base; the rhachis is marked with decurrent lines from 
the insertion of the spikelets. The spikelets are subsessile, narrow, more or less 
spreading, in many rows, 16 in. long; pedicel very short, very shortly puberulous ; 
glumes 1-пегуед, about as long as the spikelet. 
It is nearly related to Sporobolus spicatus, Kunth, Enum. Gram. i. p. 210, n. 1 (1833) 
(that is, to Vilfa spicata, Vahl), and appears on superficial examination to be identical, 
