ON CENTRAL-AFRICAN PLANTS. 33 
Another specimen, collected by Major Serpa Pinto, no. 35, differs from his no. 51 by a 
shorter, denser, and more highly compound inflorescence, with spikelets ranging up to 
iin. long, bearing rather more numerous flowers (21-26) and more obtuse palew; it 
may, however, belong to the same species, and, if so, would so far enlarge or modify the 
characters of the species given above. 
52. IMPERATA ARUNDINACEA, Cyr. Pl. Rar. Regn. Neapol. fasc. ii. p. 27, t. 11 (1792) ; 
 Kunth, Enum. Gram. i. p. 477 (1833), cum syn. ; Steud. Syn. Pl. Gram. p. 405, n. 1 
(1855); Caruel, Prodr. Fl. Tose. p. 695 (1864); Benth. et Muell. Fl. Austral. vii. 
p. 536 (1878). 
This species is very widely spread over the warmer countries of the world, including 
Italy and Australia. 
Serpa Pinto, no. 56. 
53. HETEROPOGON HIRTUS, Pers. Syn. Pl. ii. p. 533 (1807); non Ands. ex Schweinf. et 
Aschers. in Schweinf. Beitr. Fl. Жор. i. p. 310 (1867). Andropogon contortum, 
L. Sp. Pl. edit. i. p. 1045, n. 1 (1753) ; Kunth, Enum. Gram. i. p. 486, n. 2 (1833); 
Steud. Syn. Pl. Gram. p. 367, n. 37 (1855); Benth. et Muell. Fl. Austral. vii. p. 517 
(1878). Heteropogon contortus, Roem. et Sch. Syst. Veg. ii. p. 836 (1817). 
This species extends over the warmer parts of both the Old and New Worlds, 
including Australia; but it does not occur in any part of Europe. 
Serpa Pinto, no. 42. 
54, ELIONURUS ARGENTEUS, Nees ab Esenb. Fl. Afr. i.p.95 (1841). Andropogon tenui- 
Лойиз, Steud. Syn. Pl. Gram. p. 365, n. 15 (1855). 
The species occurs also in Extratropical South-eastern Africa. Our specimen is quite 
destitute of leaves; and we are not sure of the correctness of its identification. 
Serpa Pinto, no. 37. 
55. ANDROPOGON INSCULPTUS, Hochst. in Herb. Schimp. Abyss. i. n. 80; A. Rich. Tent. 
Fl. Abyss. ii. 458 (1851); Steud. Syn. Pl. Gram. p. 380, n. 205 (1855). 
Our specimen is without leaves, but appears to be identical with the above-mentioned 
species, which has previously been found in Abyssinia and Gallabat. 
Serpa Pinto, no. 54. 
56. ANDROPOGON ANTHISTIRIOIDES, Hochst. in Herb. Schimp. Abyss. iii. nn. 1822, 1832 ; 
A. Rich. Tent. Fl. Abyss. ii. p. 463 (1851); Steud. Syn. Pl. Gram. p. 386. n. 283 
(1855). | 
The species occurs also in Abyssinia, and is probably a variety of Andropogon cym- 
barius (L.), a species which extends from the East Indies to Nileland and South Africa. 
Our specimen is without lower leaves. 
Serpa Pinto, no. 53. 
SECOND SERIES.—BOTANY, VOL. II. F 
