Genera of South African Flowering Plants. 
51 
'entirely restricted to forests from George to East London. All the others 
are outliers from the Tropics. CarissaJj. extends westwards to Swellendam; 
Acokanthera Gr. Don. to Greorge. They are absent from the Karroo. Pachy- 
podiu'tn Lindl. extends into the Eastern Karroo, and in the coast districts is 
not recorded west of XJitenhage. The remaining genera do not occur west 
of the Kei River, with the exception of Strophanthus DC, which extends t 
the Kagaberg, near Bedford. 
Asclepiadaceae. 
(1) Periploceae. ^/cMmm E. Mey. is endemic in Namaqualand. None 
of the other five South African genera extend further from the Tropics than 
the Kei River, with the exception of Baphionacme Harv., which is found as 
far as the Uit. div. 
(2) Secamoneae. 8ecamo7ie R. Br. extends from the Tropics in the coast 
districts ; one species reaches the Cape Peninsula. 
(3) Cynancheae. Of these only Cynanchum L. and Stapelia L. are 
found in all South African regions and extend into the Tropics, Huernia 
R. Br. in all except the extreme S.W. No less than eighteen genera are 
endemic in South Africa, namely, Microloma R. Br. (W., S.W. to Port 
Elizabeth, Karroo and Bechuanaland), Parapodium E. Mey. (Kalahari 
region to Eastern Karroo and Queenstown), Woodia Schlecht (E. and N.E. 
to Somerset East and Humansdorp), Periglossum Decne. (E. and N.E. to 
Komgha), Cordylogyne R. Br. (N.E. and E. to Graaff Reinet and Queens- 
town), Krebsia Harv. (N.E. and E. to Aliwal North and Fort Beaufort), 
Fanninia (Natal to Cathcart), Glossosteplianus E. Mey. (S.W. to Van 
Stadens), Fustegia R. Br. (W. and S.W. to the Paarl), Fmicocarpus K. 
Schum. & Schlecht. (Delagoa Bay), Fmplectanthus N. E. Br. (Natal and 
Zululand), i^%sso/o&mm E. Mey. (Little Namaqualand), Sisyranthus E. Mey. 
(Natal, Griqualand East to the Winterberg, Albany and Bathurst), Macro- 
petaluiii. Burch. (Kalahari region), Anisotoma i'enzl. (Drakensberg to Van 
Stadens), Pectina.ria Haw. (West and Karroo to Bedford), Diplocyatha 
N. E. Br. (Western Karroo), Piaranthus R. Br. (West and Karroo to 
Bedford). The remaining genera are represented in the Tropics. Their 
distribution in South Africa is as follows : Xysmalobium R. Br. (in all 
South African regions except the West, Cape Peninsula, Western Karroo), 
Schizoglossum E. Mey. and Asdepias L. (mostly E. and N.E., penetrating 
into the Eastern Karroo and along the coast to the Cape Peninsula), 
Pachycarpus E.Mey. (mostly E. and N.E., extending in the coast districts 
to Swellendam), Pentarrhinum E.Mey. (fairly general, but in the southern 
coast districts, not west of Uit. div.), Sarcostemma R. Br. (similar, but not 
west of Mossel Bay), Pergularia L. (N. and N.E.), Tylophora R. Br. (W., 
N., N.E. and E., not west of Uit. div. in the southern coast districts, 
penetrating slightly into the Karroo), Spha.erocodon Benth. (E. and N.E.), 
