516 : COMPOSIT& (Harv.) [Dicoma. 
Sect. 1. StetRocoma. (Sp. 1-2.) 
1. D. Capensis (Less. in Linn. v. p. 277); root perpendicular, sim- 
ple; stems many from the crown, diffuse or decumbent, tomentose ; 
leaves tapering at base into a petiole, oblongo-lanceolate, on both sides 
tomentose, undulate, minutely calloso-serrulate ; heads subsessile, dis- 
coid, terminal or lateral; outer invol. sc. cobwebbed or glabrous, very 
much acuminate, squarrose, nerved, inner lanceolate, acute, nerveless, 
erect ; disc-achenes furrowed, marginal sterile ; pappus of the marg. fi. 
bristle-shaped, serrate, of the disc double, the outer bristle-shaped, 
inner plumose beyond the middle, expanded at base. DC. J. ¢. 36. 
Has. Cape, Lichtenstein. Karroo, Drege! Nieweveld, Beaufort, Z. § Z./ Spring- 
bokkeel, Zey./ 1036. Namaqualand, A. Wyley! Aapje’s and Vaal R., Burke! 
(Herb. D., Hk., Sd.) 
Probably an annual or biennial. Stems 6-12 inches long or more, laxly leafy. 
Leaves 1-14 inch long, 2-4 lines wide, like those of some Aizoon. Invol. in the 
majority of specimens seen by me quite glabrous, as in DC.’s var. *‘ledolepis.” Inv. 
scales white or straw-colour. 
2. D, macrocephala (DC.! 1. c. 36); stems many from the crown, 
diffuse, tomentose; leaves tapering at base into a more or less distinct 
petiole, oblong or oblongo-lanceolate, at first cobwebbed, then glabrate 
above, thickly woolly beneath; heads equalling or sub-exceeding the 
leaves, sessile, discoid; inv. se, glabrous or nearly so, outer and inner 
alike tapering to a fine, bristle point, subsquarrose ; papp. of marg. fl. © 
very long, bristle-shaped ; of disc double, the outer of few, deciduous 
scales, inner subdilated at base, much acuminate, ciliato-barbellate from 
base to apex. 
nn Klipplaat R., Drege! Magalisberg, Zey/ 1029, Vaal R., Burke. (Herb. 
~ Allied Sp: Capensis, but with broader and less woolly leaves, much larger fi. 
heads, more taper-pointed inner inv. sc. and dissimilar pappus. Heads 14 in. long. 
Lvs, 14-2 in, long, 4-5 1. wide. 
Sect. 2. Ruigiotaamnus. (Sp. 3.) 
3. D, radiata (Less. in Linn. v., 278); stem suffruticose, erect, shrub- 
by, much-branched, branches rib-striate, tomentulose in the furrows ; 
lvs. obovate or spathulate, tapering into a petiole, mucronate, one- 
nerved, entire, on both sides thinly canous ; heads terminal, radiate ; 
inv. sc. glabrous, rigid, linear-lanceolate, acuminate, erect, nerved, the 
inner gradually longer; ray achenes sterile, glabrescent, with fewer, 
setiform papp. bristles ; disc-ach. very silky, with multiseriate, serrate 
papp. bristles. DC. 1. ¢. 37. Leyssera picta, Th.! Cap. 692. 
Has. Cape, Thunberg! Mundt and Maire, Uitenhage, £. § Z.! Dr. Alex. Prior! 
(Herb. Th., D., Sd.) 
A broom-like bush, often nearly leafless, with very rigid twigs. Leaves 1-14 in. 
long, 2-4 1. wide, scattered or tufted. Inv. sc. marked with two purple bands, 
one at each side of the slender midrib. It varies (fide DC.) with unilabiate or bila- 
biate ray-fl., and equally cut or bilabiate disc-fi. 
Sect. 3. Maciepium. (Sp. 4-6.) 
4. D. relhanioides (Less.! 1. c. 279) ; shrubby, twigs minutely sub- 
canescent; leaves nerveless, broad-based, sessile, lanceolate-acuminate, 
