EXTRA-TROPICAL SOUTH AFRICAN ACACIAE 151 
Florence Paterson, 426. Komgha Div., grassy hills near Kei River 
Mouth, Flanagan, 610. 
Karroo Region : Common along water courses in the Karroo, L. 
Bolus. Rivers and mountain sides near Graaff Reinet, Bolus 374 
Kalahari Region : Griqualand West, at Klaarwater, Burchell’l 953* 
Banks of Yaal River, near Barkly West, Marloth, 808. Transvaal, 
Fountains near Pretoria, Leendertz, 543. Transvaal Museum Her- 
barium, 8424. Water kloof Rust, M. Collins, 7044. Vereeniging, Trans- 
mud Museum Herbarium, 10831. Potchefstroom, Transvaal Museum 
Herbarium, 10049. Zeerust, Transvaal Museum Herbarium, 11423. 
Naboomspruit, Transvaal Government Herbarium, 10478, 10484. 
This is popularly known as the “Karroo-thorn,” “doorn-boom” 
or “ Wittedoorn.” 
IMPERFECTLY KNOWN AND DOUBTFUL SPECIES. 
A. ferox, Benth., Hook. Lond. Journ. v. 97. 
On careful examination of the type specimen of this species in 
the Kew Herbarium, it was found to be composed of two branchlets, 
one branchlet being A. detinens, Burch., and the other A. Burkei, 
Benth. This confusion existed in both the Hooker and Bentham 
Herbaria. The species A. ferox, Benth. can therefore no longer stand. 
A. heteracantha, Burch., Trav. 1. 389. 
The type specimen of this species consists of a flowering branchlet 
without fruit. Flowering branchlets of A. spirocarpoides, Engl, seem 
to me to be identical with those of A. heteracantha, Burch., but as 
Burchell’s type has no fruit and as he in his notes describes the 
legume as “ linear,” I hesitate to unite these two species. 
A. Litakunensis, Burch., Trav. II. 452. 
The type specimen of this species consists of several very young 
twigs without flower or fruit. It is therefore impossible to tell what 
this species is. Bentham (Trans. Linn. Soc. xxx. tab. 70) figures a 
legume of A. Litakunensis, Burch., which is spirally twisted and very like 
that of A. spirocarpoides. This is not in the Kew Herbarium, but may 
yet be traced among the collections of fruits in the Kew Museums. 
A. Rehmanniana, Schinz, Bull. Herb. Boiss. VI. 525. 
Kalahari Region: Transvaal, Streydpoort, Makapansberg, Reh- 
mann, 5517. 
This species, of which I have no specimen, is near A. lasiopetala, 
Oliver, but differs in having a larger number of pinnae to the leaf 
(Schinz, Bull. Herb. Boiss. Vi. 525). When this species has been more 
widely collected it may prove to be a variety of A. lasiopetala, Oliv. 
