159 



f 



Acacia amboensis, Schinz and A. Stuhlmanni, Taub., resemble 

 A. lasiopetala and A. Rehmanniana in the yellow colour of the 

 hairs, but A. Stuhlmanni is patently hirsute and the legumes are 

 densely appressed hirsute. 



Acacia uatalitia, E. Mey.— Komatie River, Davy (No. 133, 



species " M " of my list). Nearly related to A. norrida, but 



apparently a valid species, distinguished by the much narrower 



leaflets and characteristically pale bark, as compared with the 



dark-brown, almost black, bark of A. horrida. " In fruticet. pr. 



Mailieus Kep. 2,300 ft,, 17/11/94" R. Schlechter, 4818, in herb. 

 Zurich. 



Rolft 



The 



type specimens both of A. nigrescent and of var. pallens are from 

 Zambesia, and in each case they are very incomplete. Additional 

 material from the Transvaal enables Rolfe to separate the latter as 

 a distinct species to which all our material so far collected, appears 

 to belong. I have incomplete winter specimens from Topsi, 

 Bechuanaland, which may belong to A. nigrescent, but it is 

 impossible to say definitely until foliage has been collected from 

 the same locality. This is one of our most important timber 

 trees, and is largely cut for mine props under the name of "Knop- 

 jies-doorn" or " um-Kai." The prickles persist for many years 

 on the main trunk and branches, effectually arming the tree, 

 though to what advantage is not evident. The type of H var. 

 pallens" is from u opposite Pita, near Senna," Zambesia, April, 

 1860, Kirk, 201, "a tree 30 ft., very hard, heavy wood used 

 for clubs." 



Acacia Rehmanniana, Schinz (No. 129, species " H " of my list). 



om 



my specimens from Marabastad near Pietersburg, were collected 



only a few miles from the same locality ; I have also gathered it 



along the Sand River, beyond Pietersburg. The bark is dark, 



hard, distinctly and coarsely striate and persistent. The Bulawayo 



specimen referred to in my list appears to belong here, but the 



White River tree is probably something else, perhaps A. lasiopetala, 

 Oliver. 



Acacia robusta, Burch.— Macaliesberg, Burke, 321. Bushveld 

 between Elands River and Klippan, Rehmann, 5025 ; without 

 locality (probably Macaliesberg) Zeyher, 562, 165 - 9 ; Wonderboom 



Meinti 



Crocodile 



River Drift, near Barberton, Bolus, 7756. Often seriously affected 

 by the fungus Aecidium inornatnm, Kalchbr. The leaves are 

 also subject to the leaf-spot Uromyces phyllodii, Cooke and 

 Massee ; I am indebted to my colleague Mr. Pole Evans for the 

 determination of these parasites. 



Acacia sambesiaca, Schinz. — The Zurich type reminds me of a 

 dwarf shrubby species common in heavy " black turf" soils on 

 the Springbok Flats, Waterberg District, 4096-4097, but there 

 were no specimens for comparison. 



Acacia spirocarpa, Davy in list, not of Hochst, = A. spiro- 

 carpoideSy Engl. 



