276 Lxxiii. COMPOSITE (OLIVER AND hiern). [Vernonia. 



slender, scarcely dilated above, reddish Anther-base shortly sagit- 

 tate. Achenes subterete, ecostate, uniformly setulose with short white 

 appressed hairs, with small basal callus. Pappus duplex, white, outer 

 very short, inner barbellate, caducous. — Chrysocoma violacea, S. et T. 

 PI. Guin. 384, ex DC. 1. c. 



Widely spread in Tropical Africa, North and South of the Equator. 



17. V. undulata, 0. ^B. Erect herb of 2 ft. or more. Stein 

 striate, puberulous ; branches at an acute angle, leafy. Leaves ovate, 

 the upper ones lanceolate, narrowed at both ends, undulate, repand, 

 apiculate, membranous, puberulous and green on both sides, shortly 

 petiolate, 1-2 byJ-J in. Heads hemispherical or campanulate, i-Jin. 

 diam., about 20-flowered, on pedicels of :J— 1^^ in., bracteolate, in a 

 rather lax corymbose cyme 6 in. diam. ; bracteoles linear- setaceous 

 minute. Inner involucral bracts equal, J in. long, linear-oblong, ob- 

 tuse or apiculate but not acute, pubescent, about 12 in two rows, outer 

 linear-setaceous short, few. Flowers rose-blue. Achenes ^ in. long, 

 pilose, indistinctly costate. Pappus white, biseriate, all setiform, outer 

 very short. 



Vile &and. Niamniam-land, near Gumba, Schweinfurth ! 



bower Guinea. Angola, Quiballa to Bembe, Monteiro ! (A form with larger 

 broader leaves ranging up to 3| by 1^ in. ; involucral bracts elliptic-oblong, acutely 

 acuminate ; flo-wers purple. 3 feet high. Perhaps a distinct species.) 



18. V. ILraussil, 8ch. Bip. ; Walp. Bep. ii. p. 947. Stem simple 

 erect 1^3 ft., clothed like the leaves beneath with silvery subappressed 

 tomentum. Leaves alternate, ovate or elliptic- lanceolate, acute or acu- 

 minate, base cuneate or rounded, upper surface glabrate or more 

 thinly silky than the lower, which is strongly marked with oblique 

 ascending lateral nervures, |-2 in. long, ^-^ in. broad ; petiole very 

 short. Inflorescence and capitula nearly as in V. natalensis, Achenes 

 silky-tomentose, hairs obscurely 5-seriate. Pappus duplex, setaceous, 

 white ; outer very short. — Wehhia elceagnoides, DO. Prodr. v. 73. V. 

 elceagnoides, Schultz Bip. in Flora 1844, p. 668, non H. B. K. 



South Central. Sent by Mr. Baines along with a number of specimens col- 

 lected North of the Tropic in South Central Africa, without special label. It occurs 

 also in Natal, the Macalisberg, &c. 



19. V. Smithiana, Less, in Linncea^ 1831, p. 638 (ex descr.)^ 

 1-2 ft. high, woody at base, with several erect striate leafy silvery-pu- 

 bescent subangular stems, simple or slightly branched above from a 

 woody stock. Leaves alternate, ascending, narrowly elliptic- or 

 lanceolate-oblong or varying to ovate- elHptical, subsessile, blunt or 

 subacute, narrowed at base, glabrescent and reticulate above, silvery- 

 sericeous beneath, 1-2 J in. long by ^— 1-1 in. wide. Capitula hemi- 

 spherical, ^— J in. wide, about 15-flowered, on pedicels ^-^ in. long, in 

 small rather dense terminal panicles. Scales of the involucre narrowly 

 elliptic-oblong, in few rows, obtuse, mucronulate, tomentose. Recep- 

 tacle glabrous. Corolla-tube gradually narrowed ; lobes thinly pilose. 

 Anther-base shortly produced. Achenes pilose, obscurely 8-10-cos- 

 tate, callus-based. Pappus biseriate, outer setae minute, barbate. 



