Dicoma. ] LXXTII. COMPOSITE (OLIVER AND HIERN). 443 
Outer pappus setaceous, inner paleaceous. Root annual . . 1. D. tomentosa. 
Pappus all setaceous. Root perennial. 
Setee of pappus barbellate. Habit diffuse . . . . . . 2. D. anomala, 
Sete of pappus plumose. Habit erect. 
Capitula pedicellate. Leaves with broad base . . . . 3. D. Kirkiti. 
Capitula sessile. Leaves tapering at base . . . . . 4. D. sessiliflora, 
1. D. tomentosa, Cass. in Bull. Soc. Philom., Mart. 1818. Cot- 
tony erect much branched or simple annual, with a shrubby habit, 
6-24 in. high. Branches terete. Leaves narrowly elliptical or spathu- 
late, apiculate, obsoletely denticulate, narrowed to subsessile base, 
$-24 in. long. Capitula numerous, campanulate, about 14-flowered, 
on very short axillary branches and terminal, }—% in. long, discoid, 
homogamous. Involucral bracts lanceolate tapering into apical spines, 
arachnoid or cottony outside, the inner suberect, the outer shorter 
spreading. Corolla white or pale yellow. Achenes densely silky. 
Pappus duplex; outer of barbellate sete 2-3 times the length of the 
achene, tawny, biseriate ; the inner row of rather widely scarious aris- 
tate-acuminate paleze, nearly as long as the outer.—DC. Prodr. vii. p. 
386; A. Rich. FI. Abyss. i. p. 459; D. lanuginosa, DC. |.c. cum syn. ; 
Schaffuera carducides, Schultz Bip. in Herb. Kotsch. Nubico, n. 100. 
Upper Guinea. Senegambia, Perrottet, Leprieur ! Niger, Barter! 
North Central. Kouka, E. Vogel. .. . 
brane Land. Cordofan, Kotschy! Cienkowsky, Abyssinia, Schimper? Hiilde- 
Mozamb. Distr. Kaimba Island, opposite Tette, Kirk! Rios de Sena, Peters / 
Widely spread in the East Indies, 
2. D. anomala, Sond. in Linnea, xxiii. p. 71 (1850). Rigid, 
much branched diffuse perennial, 3-12 in. high. Rootstock woody. 
ranches suffruticose, angular above, ashy, obsoletely pubescent, leafy. 
aves linear or very narrowly oval, narrowed at both ends, sessile, 
glabrescent above, hoary-tomentose beneath, 1-nerved, minutely serru- 
ate, 3-2) in, long. Capitula sessile, termiral, discoid, homogamous, 
nutowly to broadly campanulate, 2-4 in. long. Involucral bracts in 
rad Imbricating rows, glabrous or obsoletely cottony, very narrowly 
“nceolate, gradually tapering into a pungent tip; outer ones succes- 
ively shorter and ‘often more spreading. Flowers purple or white. 
chenes densely setose. Pappus pluriseriate, about 4 times the length 
oy the achene, of barbellate sete, very narrowly paleaceous at base.— 
arv. et Sond. FI. Cap. iii. p. 517. 
Form 1, Sonderi, Harv. Leaves narrowly linear. Heads rather large. 
South Central? South African Gold Fields, Baines / i seawas 
q mp fn : microcephala, Harv. (D. Gerrardi, Harv.). Leaves narrowly ‘near, 
ather large, 
South Central ? South African Gold Field, Baines ! Bote yd 
xxi orm 3. karaguensis, O. & H. D. karaguensis, Oliv. in Trans. Linn. at ond. 
ites 103, t. 70. Leaves narrowly oval. Involucral bracts suberect. Heads rathe 
— hand. Karagué, Speke and Grant ! 
ccurs also in Eastern districts of the Cape Flora. 
