Melanthera.] LXXIII. COMPOSITE (OLIVER AND HIERN). 383 
points. Achenes with 2 very caducous scabrid sete exceeding the 
ovary. 
Wile Land. Djur-land, Schweinfurth ! 
63. XIMENESIA, Cay. (VERBESINA, L.) ; Benth. et Hook. f. 
Gen. PI. ii. p. 380. 
Capitula hemispherical heterogamous radiate ; ray-florets @ ligulate, 
ligule spreading, deeply toothed, yellow. Involucral bracts 1-2-seriate, 
herbaceous, linear, acute, often unequal, equalling the disk; palee of 
receptacle conduplicate sheathing the florets. Anther-base obtuse. 
Achenes compressed with winged margins; pappus of 2 aristee.— 
Herbs more or less hoary with opposite and alternate leaves and rather 
large loosely cymose pedunculate heads. 
Reduced in the Genera Plantarum Lec. to the American genus Verbesina. Being 
the solitary representative of the genus thus consolidated, we retain it under the old 
hitherto generally received genus. 
1. X. enceliodes, Cav. Ic. ii. 60, t. 178. More or less hoary 
branched annual, 1-3 ft. high. Stem and branches pubescent-tomen- 
tose, striate. Leaves mostly alternate at least the upper ones, from 
deltoid to oblong, dentate, broad near the sometimes excavated base, 
green and strigulose above, hoary with whitish closely appressed to- 
mentum below, 14-6 by 1-3 in. exclusive of the winged auriculate 
Petiole of 4-2 in, Capitula 3-14 in. diameter, on peduncles ranging 
up to8in. Outer bracts of the involucre linear acute herbaceous, 
about } in. long. Receptacle convex. Achenes pilose.—Pallasia ser- 
ratifolia, Sm. in Rees Cycl. vol. xxvi. 
A variable widely spread species originally from Mexico. 
Var. oblongifolia. Leaves oblong, the lower ones ovate. Wing of the achenes 
rather thickened, opaque, with rather acute lobes. 
Upper Guinea. Senegambia, Walo, Perrottet. 
ee Zand. Khartoom, Schweinfurth! ; ; 
lous ar. cana. Leaves deltoid or lanceolate, very hoary. Wing of the achenes vil- 
» Opaque, obtuse. 
Wile Land. Kartoom, Petherick ! Speke and Grant ! Sennaar, cultivated. 
64, SPILANTHES, L.; Benth. et Hook. f. Gen. Pl. ii. p. 380. 
Capitula heterogamous with a ray of uniseriate shortly ligulate 
orets, or homogamous ray wanting. Involucral bracts short, much 
Shorter than the disk, 1-2-seriate, outer more or less herbaceous. 
ceptacle elongate (in Tropical African species), paleas conduplicate. 
nther-base truncate entire or 2-dentate. Pappus 0 or of 2 or 3 sete. 
\chenes compressed biconvex or the outer 3-cornered, margins often 
Ciliolate—Herbs glabrous’ or pubescent, with opposite leaves and 
Solit : . 
whitixd, usually long-pedunculate yellow capitula, or ray sometimes 
A wide-spread ; isph including either many 
c genus of warm regions of both hemispheres, 1 
Rearly allied or few variable species. 
