444 Lxxiii. composite: (Oliver and hiern). IDiconia. 



3. D. Kirkll, Harv, Fl. Cap. iii. p. 518. An erect rigid berb, 

 2-3 ft. high. Rootstoct 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. Capitnla 1-1-^ in. long, on pedicels of -J-l in. long, in a 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. 



Soutb Central. Highlands of Batoka country, Kirk ! 

 It is not known to occur south of the tropic. 



4. Z>. sessiliflora, 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, 3^8 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, 1-1^ in. long. Involu- 

 cral bracts imbricated, pale, subglabrous, minutely serrulate, rigid, 

 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, plumose, 

 many times longer than the achene. 



"Upper Guinea. Niger, Borgu, Barter! 



Srile IJand. Djur-land, Schweinfurth ! 



XMIozamb. Bistr. Zambesi, Lake Chidia, Kirk ! Kios de Sena, Fetcrs I 



It is not known to occur south of the tropic. 



105. HOCHSTETTERIA, DC. ; Benth. et Hook. f. Gen. PL 



ii. p. 492. 



Characters of Vicoma, differing in having a simple 1 -seriate pappus 

 of 10 long seta3 dilated below. — Rigid branched perennial with alter- 

 nate often glabrous leaves and terminal pedunculate hemispherical 

 heads, subglobose in fruit. 

 A monotypic genus. 



1. K. Schimperl, DC. Coll Mem. ix. 23, t. 6; Prodr. vii. 287. 

 A glabrous branched rather rigid perennial herb, some feet high. 

 Branches angular. Leaves oval obtusely pointed at apex, attenuate at 

 base into a short narrowly winged petiole, minutely crenate, i-2 in. 

 long. Capitula about J in. long usually with foliaceous bracts at base 

 shorter than the involucre. Involucral bracts narrowly lanceolate, 

 very acute, rigid, pungent. 



WUe Xiand. Soturba 22° N. Lat., Sckweinfurlh! 

 Occurs also in Arabia and Sciude. 



