374 LXXIII, COMPOSITA (OLIVER AND HIERN). [Sclerocarpus. 
occasionally opposite simple leaves and yellow terminal capitula, soli- 
tary Or loosely cymosely panicled. 
A 8mall tropical genus of both hemispheres. 
Heads solitary or nearly so, much overtopped by involucral © 
bracts. Ray present. Palee beaked , ee 
Heads panicled, but little exceeded by involucral bracts. 
ay e . e ° . e e . . e. . . . 
1, S. africanus. 
2. 8. ? discoideus. 
1. &. africanus, Jacq. Ic. Pl. Rar. ii. p. 17, t. 176. Erect some- 
what hispid-pilose annual, 1-4 ft. high; branches striate. Leaves 
mostly alternate, ovate or ovate-lanceolate, acute, narrowed at the base 
into the petiole, rather remotely serrate, 1-6 by 4-2} in.; petioles 
ranging up to $ in. Capitula sessile subsessile or pedunculate, terminal 
or leaf-opposed, 1-2 in. diam., with foliaceous bracts at the base. 
Peduncles ranging tol} in. Ray-florets 3; ray 3d in. long. Fertile 
florets about 10-12. Corolla elongated with narrowly lanceolate 
lobes. Receptacle-pales cymbiform, 4-4 in. long in fruit, gibbous and 
with an elongated neck at apex, pubescent, wrapped round the fertile 
florets, Style-branches elongated, slender. 
Upper Guinea. Niger, Barter! Ansell! Thonning. 
Wile Bana. Cordofan, Kotschy! Abyssinia, Schimper ! Hildebrandt. Gallabat, 
Schweinfyurth f 
Mozamb. pistr, Tette, Kirk! 
Occurg also in India in cornfields, ete, ; perhaps introduced. 
_ 2. §.1 discoideus, (Benth. et Hook. f. Gen. Pl. ii. p. 364;) Vathe 
© [tna Xxxix. p. 495 (1875). A viscid-puberulous trichotomonsly 
branched erect annual, 1-2 ft. high. Leaves all except the floral ones 
Oppo8Site, lanceolate, subsessile, serrulate, about 1-2 by }in., base broad. 
Capitula 4 in, diam., pedicellate, arranged in a terminal leafy cory™- 
bose panicle. Pedicels 4-11 in. Bracts of the involucre 5-6, more 
Or Je88 foliaceous exceeding the florets. Ray-florets wanting. Disk- 
florets numerous. Corolla-tube short crass hairy; limb short, lobes 
4 youndly ovate. Palew of the receptacle cymbiform shortly 
AcumMInate, glandular and hairy on the back, wrapped round the florets 
but not the fraits.—Guizotia discoidea, Schultz Bip. in Schweinf. Fl. 
Aithiop, p. 150. 
Wile gang, Abyssinia, Schimper ! 
59, BLAINVILLEA, Cass.; Benth. et Hook. f. Gen. Pl. ii. 369. 
Capitula heterogamons radiate or discoid, outer florets 9. Involucre 
ovoid or hemispherical ; scales slightly unequal outer herbaceous inner 
paleaCeons passing into the plicate scales of the receptacle. Ray or 
outer florets with a small 2~3-dentate ligule or more or less reg alarly 
2.3-fid, Anther-base obtuse entire. Achenes 3-cornered or biconve* ; 
Pappts of 2 or 8 stout sete without intermediate scales——Hrect OF 
trichotomons scabrid herbs, with opposite or alternate ovate or lanceo” 
late leayes. Capitula yellow or whitish, terminal, in loose Cy: mos? 
Panicles, often singly in the forks, 
