40 
Transactions of the Royal Society of South Africa. 
(north-western), and the Karroid genus Augea Thunb. ; the latter, however, 
is almost sure to occur in the north-western parts of the TJitenhage division. 
Eutaceae. 
All arborescent South African genera are found in the Uit. and P. E. 
divs. Calodendron Thunb. occurs from Swellendam to Natal and beyond. 
Clausena Burm. (incl. Myaris Presl) appears to have its western limit near 
Port Elizabeth, while Toddalia Juss. and Xanthoxylum L. extend much 
further west. 
Amongst the south-western genera Empleuridium Sond., Adenandra 
Bartl. et Wendl., Phyllosoma Bol., and Euchaetis Bartl. et Wendl. are 
absent. Barosma Willd. and Agathosma Willd. are well represented, but 
thin out further east, only the former reaching Natal. Coleonema Bartl. et 
Wendl. and Empleurum Soland. reach in our area their eastern limit. 
Biosma L. is still common near Grahamstown, but does not extend much 
further east, while Acmadenia Bartl. et Wendl. found in the Uit. div. is 
recorded by Ecklon and Zeyher and Drege from KafPraria, though it appears 
to be absent from the intervening strip of country. The occurrence in the 
Uit. div. of the south-western genus Macrostylis Bartl. et Wendl. is doubtful, 
but in any case it does not extend further east. 
Simarubaceae. 
The endemic genus Peglera Bol. is found in the Kentani district. 
Balanites Del. occurs in extra-tropical Portuguese East Africa. 
Burseraceae. 
Only Commiphora Jacq. (Balsamode7idron Kunth) extends to South 
Africa. It occurs in the north-western, northern, north-eastern and eastern 
parts, in the latter as far south as Kingwilliamstown. 
Meliaceae. 
Ekehergia Sparm. and Ptaeroxylon E. & Z. are found in the Uit. and 
P. E. divs. The former, according to Sonder, extends to George, but is more 
frequent east of our districts, while I have no record of Ptaeroxylon E. & Z. 
west of Uitenhage. Nymania Lindb. {Aitonia Thunb.) is a typical Karroo 
genus extending to Namaqualand and to the Uit. div. Trichilia L. and 
Turraea L. are eastern genera, the latter being found as far west as Port 
Alfred. 
Malpighiaceae. 
Four genera extend from the Tropics into the northern and north-eastern 
parts of South Africa, namely, Acridocarpus Guill. et Perr. (to Pondoland), 
Sfhedamnocarjpus Planch., Triaspis Burch. (to Kuruman), Tristellateia 
Thouars. 
