Blainvillea.] — UXXtt1. CoMPosITm (OLIVER AND HIERN). 375 
A small wide-spread tropical genus. 
Achenes (at least the outer ones) 3-sided ; sides glabrous. 
Achenes transversely marked with minute wrinkles, not 
tubercled ; leaves dark green, hirsutely scabrid 
Achenes more or less tubercled; leaves ashy green, 
hispidly seabrid. 2... 1. 1 ew eee 
Achenes doubly convex, not 3-sided, villous . 
1. B. Gayana, Cass. ! in Dict. Sc. Nat. xlvii. p. 90. Erect, hir- 
sute, scabrous annual, of 14-8 ft. or more; stem striate, somewhat 
angular; branches alternate or opposite. Leaves ovate or the upper 
lanceolate, acuminate, alternate or opposite, unequally serrate, shortly 
cuneate at the 3-nerved base, ranging upto 44 by 24 in. besides petioles 
of 12 in. Capitula solitary in the forks or loosely panicled, obovoid- 
oblong or in fruit hemispherical, $-} in. long. Peduncles ranging up 
to 2 in. Outer bracts of involucre lanceolate-oblong acute striate 
hairy outside, equalling the florets ; inner similar but glabrous, jagged 
at apex. Achenes (atleast the outer ones) blackish, obconic-oblong, 3- 
sided sometimes hispid in the angles, minutely transversely wrinkled, 
3 in. long, crowned with 3 barbellate sete nearly half as long as the 
achene. 
Upper Guinea. Senegambia, Gambia, Perrottet ; Bidjem! 
Nile Land. Abyssinia, Schimper ! 
2. B. rhomboidea, Cass.! in Dict. Sc. Nat. xxix. p. 494. Erect 
di-trichotomous scabrid annual, 1-34 ft. high. Stem striate subterete ; 
branches alternate or opposite. Leaves lanceolate, alternate or opposite, 
tapering towards the apex, crenate-serrate, ashy green, narrowed to 
the 3-nerved base, ranging up to 3 by 1 in., besides petiole of 2 in, 
Capitula hemispherical, }-3 in. long, 1-2 together, in a panicled leafy 
cyme. Peduncles ranging up tol}in. Outer scales of the involucre 
oval-oblong, snbobtuse, hairy outside at least towards apex, striate 
low ; inner mostly shorter and jagged at apex. Achenes (at least 
the outer ones) obconic-oblong, 3-cornered, glabrous except the angles 
(in our Specimens), more or less tubercled, terminated by 3 barbellate 
Sete.— Eisenmannia clandestina, Schultz Bip. in Herb. Kotschy n. 191. 
Nile Land. Cordofan, Kotschy! Abyssinia, Ehrenberg ! ; 
Mozamb. Distr. Lower Zambesi, between Tette and the sea coast, Dr. Kirk! 
Our specimens differ from a type specimen that we have seen and from Brazilian 
Ones in the tubercles on the achenes; the Zambesi specimen is sparingly tubercled. 
An Arabian Specimen is also tubereled. Extends also to India. 
_ 3. B. Prieureana, DO. Prodr. v. p. 492. Erect hispid-scabrid 
tr ichotomously branched annual, of 1-2 ft. or more. Stem and lower 
ranches sulcate-striate, angular. Leaves opposite or alternate, ovate- 
lanceolate or the upper ones lanceolate, triplinerved, tapering or 
‘cuminate, serrulate or nearly entire, acuminately narrowed to a l- 
rerved base, 1-5 by 1-2 in.; petioles not exceeding } in. Capitula 
1. B. Gayana. 
2. B. rhomboidea. 
3. B. Prieureana., 
emispherical, 4-4 in. long, numerous, in a panicled leafy cyme ; 
peduncles slender, simple or branched, ranging up to 2 in. Outer scales 
of the involucre linear-oblong, obtuse, entire, strigose-hispid outside, 
lax, green, the length of the head’; inner ones glabrous or ciliate, 
