444, LXXIII. COMPOSITE (OLIVER AND HIERN). [ Dicoma. 
3. D. Kirkii, Harv. Fl. Cap. iii. p. 518. An erect rigid herb, 
2-3 ft. high. Rootstock woody. Stem leafy and simple below, white- 
cottony. Leaves lanceolate, very acute, sessile, broad and semiam- 
plexicaul at base, glabrate above, shortly cottony beneath, 2-4 in. 
long. Capitula 1-13 in. long, on pedicels of 3-1 in. long, in @ corym- 
bose cyme. Involucral bracts imbricated, pale, glabrous, minutely 
serrulate, rigid, lanceolate, with a pungent subulate tip, suberect or 
the outer ones shorter and spreading. Achenes densely silky. Pappus 
pluriseriate, many times exceeding the achene, plumose. 
South Central. Highlands of Batoka country, Kirk! 
It is not known to occur south of the tropic. 
4. D. sessilifiora, Harv. Fl. Cap. iii. p. 518. An erect rigid 
perennial herb, simple or nearly so, about 2 ft. high. Rootstock 
woody. Stem more or less silvery-cottony, herbaceous. Leaves nar- 
rowly elliptical, somewhat narrowed to a rather obtuse or subacute 
apex, narrowed to a sessile base, glabrate above, white-cottony or obso- 
letely tomentose beneath, obscurely serrulate or quite entire, 34-8 in. 
long; the lowest ones broader. Capitula sessile or nearly so, on very 
short or incipient lateral branches and terminal, solitary or few toge- 
gether in dense cymes, discoid, homogamous, 1-14 in. long. et 
cral bracts imbricated, pale, subglabrous, minutely serrulate, rigi¢, 
lanceolate, with a pungent subulate tip or the innermost mucronate or 
obtuse, suberect or the outer shorter and at length spreading. Flowers 
pale yellow. Achenes densely pilose. Pappus pluriseriate, plamose, 
many times longer than the achene. 
Upper Guinea. Niger, Borgu, Barter! 
Wile Land. Djur-land, Schweinfurth ! 
Mozamb. Distr. Zambesi, Lake Chidia, Kirk! Rios de Sena, Peters! 
It is not known to occur south of the tropic. 
105. HOCHSTETTERIA, DC.; Benth. et Hook. f. Gen. Pl. 
ii. p. 492. 
Characters of Dicoma, differing in having a simple 1-seriate pappus 
of 10 long sete dilated below.—Rigid branched perennial with alter- 
nate often glabrous leaves and terminal pedunculate hemispherica 
heads, subglobose in fruit. 
A monotypic genus. 
1. H. Schimperi, DC. Coll. Mem. ix. 23, t. 6; Prodr. vii. 257. 
A glabrous branched rather rigid perennial herb, some feet hig A 
Branches angular. Leaves oval obtusely pointed at apex, attennate st 
base into a short narrowly winged petiole, minutely crenate, Hire 
long. Capitula about } in. long usually with foliaceous bracts pe s 
shorter than the involucre. Involucral bracts narrowly lanceo!a', 
very acute, rigid, pungent. 
Wile Land. Soturba 22° N. Lat., Schweinfurth! 
Oceurs also in Arabia and Seinde. 
