_ 80 
This species is wey nearly related to C. Welwitschianus, Muell. 
Arg. in Journ. Bot. i. 338 (Nov. 1, 1864), which is included in C. zam- 
besicus, Muell, A i in Flora, xlvii., 483 (Oct. 5, 1864). The only 
tangible difference between the two species proposed by Miiller is 
that in C. Welwitschianus the stipules are only 2-3 mm. long, 
whereas in C. _— they are 4-6 mm. long. Much the same 
difference is met with in C, subgratissimus, the s specimens from the 
Transvaal having aisites 4-5 mm. long, those from Bechuanaland 
and Hereroland having stipules 2 mm. long or less. C. subgratissimus, 
while most nearly related to C. zambesicus, owing to the texture 
of its leaves, bears a greater general resemblance to C. gratissimus, 
Burch. From ae of these species, however, it is at once 
tinguished by having the upper surface of the leaves persistently 
iiafints-faberulons pistond of glabrous, 
1430. Droguetia Thunbergii, V. . Brown [ Urticaceae-Urticeae] ; 
affinis D. diffusae, Wedd., sed foliis crenatis subtus glabris, involucro 
intra lanato et patria differt 
Herba perennis. Rami prostrads grociless radicantes, tetragoni, 
glabri vel prope basin pubescentes opposita, petiolata, supra 
sparse pubescentia, subtus glabra ; petiol 2-8 mm. longi, graciles ; 
lamina 0°8—2°5 em. longa, 0°4-1'5 em. lata, ovata, acuta vel szusinata, 
basi rotundata vel latissime cuneata, Catdaed es serrato-crenata ; 
stipulae ovatae, mucronato-acutae, membra ae. Involucra in 
singulis axillis 1 vel 2 feminea, sbnikaie-areaslats et 1 bisexuale, 
campanulatum, apice breviter dentatum, omnia extra glabra, intra 
lanata. Flores masculi in involucro bisexuali 6-8, uniseriati, cum 
flore femineo unico solitarii; perianthio apice acuto, dorso pilis 
minutis uncinatis sparse pubescente. Achaenia compresso-ovata, 
acute unicarinata, glabra. 
Sourn Arrica. Swellendam Div.: in the forest at Groot- 
— Bosch, Burchell, 7232 ; in woods, without precise locality, 
hunb 
As no other than the above collectors seem to have found this 
plant, and as Thunberg went to Grootvaders Bosch, he probably 
collected it there. His specimens are absolutely identical in every 
way = those of Burchell. 
unberg, when writing the names on the sheets oe his 
specimens of Urtica capensis and U. caffra, appears to have done 
so without a very close examination of them, and has therefore 
produced some confusion. These two species are represented in his 
Herbarium by five sce mounted on separate sheets, which I 
enumerate below, giving t ern name of the plants with which. 
I find them to be Cacti ise 
“ Urtica — ae ” = Droguetia Thunbergii, N. E. Br. 
* Urtica ca = Australina capensis, We 
. hos ca pens sp" = Australina capensis, 
= Droguetia Thunbergii, N. E. Br. 
= Australina acuminata, Wedd. 
t will be noted that two sheets of U. capensis are marked as 
“a : sheets, but upon a careful comparison of the specimens with 
Thunberg’s ‘description it is quite clear that neither He the “a 
sheets of” U. capensis nor the “a” sheet of U. caffra taken 
a 
