127 
the plant, the rostetie produces a very “ glutinous transparent 
exudation, through the incision of new growth.” 
Harpagophytum procumbens, DC. 
Botletle Valley, Pacing 212; Kalahari Desert; Kwebe to 
Palapye, 3,000 ft., Lugard, 273. 
Creeping on the ground ; flowers deep purple or magenta, white 
at the base. 
Holubia saccata, Oliv. 
Near Mamunwe in the Kalahari Desert, Lugard, 240. 
F pete greenish-yellow. 
— Lugardi, N. £. Br. in Fl. Trop. Afr. iv, 2, 
Be es aa Kalahari desert, near Chukutsa Salt-pan, 3,000 ft. 
Lugard, 274. South-west Africa, without precise locality, at 
latitude 23°, Chapman & Baines. 
Sesamum grandiflorum, Schinz. 
Kwebe Hills, 3,300 ft., Lugard, 111; Mrs. Lugard, 172. 
An erect annual, growing to 5 ft. high ; flowers white, light 
lilac or dull mauve in various shades, with the inside of the tube 
dark mauve-purple. Said to be a remedy for snake bites ; the 
leaves rubbed on the affected part are said to draw out the pain 
and produce a blister. The native name is ‘ Dhobi.’ 
Sesamum alatum, Thon 
Botletle Valley, Lugar 188. 
* Flowers lake-colou 
Ceratotheca triloba, me 
Mamunwe, in the Kalahari Desert, Lugard, 241. 
Flowers ieee a 
Pretrea eriocarpa, Dec 
Botletle Valley, Leja, 208, 275 
Creeping on the ground ; flowers light purple. 
ACANTHACEAE. 
Thunbergia aurea, N. E. Br. Annua, erecta vel scandens, pubes- 
cens. Folta alato-petiolata, deltoideo-ovata, acuta, dentata, basi 
subtruncata, acuto-angulata. Pedunculi 2°5-5 em. longi. Bracteae 
elongato-ovatae, acutae, integrae, basi cordatae. Calycis dentes 
subulati. Corolla omnino aurantiaca, 1°6-1°8 cm. diam.; tubus 
14-18 mm, longus, anguste Bian a 
Annual. Stem at first erect, becoming twinin B, growing to 2 ft. 
