324 
68. Sisymbrium exasperatum, Sond. in Linnaea xxiii, 3 
(1850). 
Sout Arrica, Transvaal: Bloemhof Distr.; near Christiana, 
Burtt Davy 12471! 
69. Sisymbrium Turezaninowii, Sond. in Fl. Cap. i. 26 
(1859-60) ex descr. 
Sour: Arrica. Transvaal: Bloemhof Distr.; Burtt Davy 
11216! Standerton, Rogers 14805! Wakkerstroom Distr, ; 
Burtt Davy 5356! : 
I have not seen the type, which is at Trinity College, Dublin, 
70. Silene pendula, Linn., Sp. Pl. 418 (1753); Bot. Mag. 
t. 114. 
Sourn Arrioa. Transvaal: Witwatersrand; Bocksburg, 
Jan. 1916, Dr. Breijer in T.M.H. 15015! probably a “ garden 
escape. 
Native of Italy, Sicily and Crete. Cultivated in English 
gardens in 1790, and recommended for rock gardéns. 
71. Acacia ataxacantha, DC., var. australis, Burtt Davy, 
var. nov.; a forma typica foliis majoribus, pinnis multioribus 
differt; a A. eriadeniae, Benth. pinnis multioribus, foliolis 
minoribus, petiolis rhachidibusque saepe aculeatis, et habitibus 
differt. 
outH Arrica. Transvaal: Pietersburg Distr.; Magoobas 
Kloof, Houtboschberg, Burtt Davy 5231 type! Barberton Distr. ; 
near Barberton, Burtt Davy 292! 2770! Pott 5302! Rogers 
23886! Swaziland; Forbes’ Reef, outskirts of bush, Burtt Davy 
2730. 
A scrambling or trailing shrub climbing with the aid of its 
prickles. Stipules deciduous. Leaf-rhachis 10-13 cm. long, 
armed or unarmed with prickles, usually without any gland 
above the petiole. Pinnae usually 5-20 pairs, about 3 cm. long. 
Leaflets 40-50 pairs, 3-6 mm. long, 0-5-1 mm. broad, somewhat - 
falcate, obtuse, obliquely truncate at base, thinly pilose with 
scattered, appressed hairs, especially in the margins. Legumes 
bright purplish-red, produced in large clusters, conspicuous. 
72. Acacia Benthamii, Rochebr., Tox. Afr. ii. pl. xix. f. 15. 
A. arabica var. kraussiana, Benth. in Hook. Lond. Journ. Bot. 
i. 500 (1842). 
NaTIVE NAMES: Maawka (Sesutw); isi-Ngau or isi-Gnau 
(Zulu). 
Sout Arrica. Natal: (type locality), a dominant species 
in the thorns country near Camperdown, Burtt Davy 10431! 
Transvaal! Delagoa Bay! Bechuanaland Protectorate! 
N’Gamiland. 
The ripe pods smell sugary and are sweetish to the taste; 
though astringent, they are eagerly eaten by livestock. They 
contain about 20 per cent. of tannin, which is found suitable for 
certain kinds of work (Sim). According to Rochebrune, this 
