I 



4 



TIIYMEL.EACE.K (Wright). 



[Arthrosolen. 



pericarp membranous. Seed witlx scanty or no albumen ; testa 

 crustaeeous ; cotjleclons fleshy. 



Branched sbrubSy often small ; leaves scattered or opposite, fiat -, flo\Yers spicnte, 

 capitate, or axillary in the upper part of the stenij bracteate or ebraeteate. 



DiSTRiB. Species 18, 8 in Tropical Africa, one of which extends into South 

 Africa. 



Flowers in terminal heads : 



Involucral bracts conspicuous, coloured 



Involucral bracts not conspicuous : 

 Leaves linear, glabrous 



4 * 



* * 



( 1 ) polycephalus. 



( 2 ) sericocephalus. 

 ( 3 ) calocephalns. 



Leaves oblong-lanceolate, silky 



P'Jowers in the axils of the upper leaves : 



Leaves oblong-lanceolate, acute, long-pilose (4) omatus. 



Leaves ovate, obtuse, glabrous above, villous beneath ( 5 ) spicatus. 



Flowers in terminal (at first subcapitate) spikes : 

 Leaves opposite 



V • > 



» 4 » 



( 6 ) fraternus. 



Leaves alternate, rarely subopposite : 

 Leaves obtuse, J-1 Hn. wide ... 



Leaves acute, 1-3 lin. wide: 

 Bracts ; leaves 2 lin. wide 



( 7 ) laxus. 



* * * 



Bracts present j leaves 1-1 J lin. wide 

 Bracts ; leaA'es 3 lin. wide 



fe * * 



( 8 ) gymnostachys. 

 ( 9 ) variabilis. 

 (10) phaeotriclms. 



Flowers in terminal pairs or solitary and axillary ; leaves 



(11) inconspicuus. 



long y ovary 



oblong, 1 1 lin . long. 



1. A. polycephalus (C. A. 3reyer in Bull. Pliys.-Math. Acad. 

 Peteiyb. i. 1845, 359); a mucli-Lranched planf. about 1| ft. high ; 

 branches erect, virgate, terete, glabrous ; leaves linear-lanceolate, 

 acute, slightly constricted at the base, 6 lin. long, ^ lin. wide, 

 glabrous ; heads terminal, ovoid, 4-6-tlowered ; inner bracts broadly 

 ovate, 7 lin. long, 5 lin. wide, outer 5 lin. long and nearly as wide, 

 all obtuse and silky outside, concave, coloured; receptacle silk}"; calyx 

 rich yellow ; tube 9 lin. long, the lower l persistent, narrou'h' ovoid 

 and clothed with silky hairs 4 lin. long, the upper part cylindric or 

 only slightly swollen at the insertion of the lower anthers, silky ; 

 lobes 3 lin. long, f lin. wide, silky outside; anthers oblong, | lin, 



silky especially above ; style 

 filiform, reaching to the calyx-throat, SltjUn. in DC, Prodr, xiv, 

 560 ; Sim, For, FI. Cape Col 302, L 153, fiij. 8; N. E, Br. in Keic 

 Bulletin, 1909, 135. Passerina pohjcephala^ E. Meyer ex Meian. in 

 Linnsea, xiv. 390; Drege^ Zwei Pji, Docnmcnte, 55, 

 Dai8 virgniay LicJifensL ex Meisn. in DC, Prodr, xiv. 530, 561. 

 Gnidia jjoJycIada^ Gilg in 0, Kauize, Rev. Gen. PL iii. ii. 281 ; 

 Diiiter, DenfscJi Sudw. Afr. 90. Lasiosiphnn polycephalus^ Pearson 

 in Dyer, Fl, Trap, Afr. vl 3. 228. 



South Afuica : withoat locality, Wallichl 



Coast Region: Tulbagh Div.; on the Witzenberg Eange near Tulbagh 

 Barchen, 8696 ! Albany Div., Boickcrl 



Central Region: Calvmia Div. ; Hantam, ^fey€r\ Tatka Div, ; Tarkastad to 

 Katberg, Shawl Cradock Div. ; Fish River, near Cradockj Bnrhe 1 Graaff Reiiiet 



57 



58, 59. 



