196 BOTANY OF THE UGANDA BOUNDARY COMMISSION. 
According to Dr. Bagshawe, the flowers of the variety are white 
with red streaks on the mid-lobe of the lower lip. 
The genus here proposed is evidently closely allied to Asystasia, 
from which it differs in the 2-lipped corolla. This being the 
alleged difference between Asystasia and Jsochoriste, Miq., I 
was led, when writing my memoir on Welwitsch’s Acanthacee 
(Journ. Bot. xviii. (1880) passim), to include Welwitseh's speci- 
mens inthe latter genus. Mr. Clarke, however, has recently had 
an opportunity of examining the material upon which Miquel's 
genus was founded, and he finds Z. javanica, Miq., to be only a 
well-known species of Asystasia. That the plant here dealt with 
cannot, with its strongly bilabiate corolla, be included in Asystasia 
is a point I have always maintained, and it gives me pleasure to 
add that Mr. Clarke now shares this view. Under these cireum- 
stances a new generic definition and term are required for 
Isochoriste africana. 
BARLERIA OPACA, Nees, in DC. Prod. xi. 230. 
Kagera Valley near Mulema. Fl. May, 279. 
Distrib, Upper Guinea. 
PsEUDERANTHEMUM Lupoyvicranum, Büttn. in Verh. Bot. Brand. 
xxxii. (1890) 41. 
Buvüáma Island. Fl. March, 632. 
Distrib. Upper Guiuea, South Central. 
JusrICIA FLAVA, Vahl, Symb. ii. 15. 
Shore of Lake at Musozi. Fl. December, 16. 
Distrib. Nile Land, Mozambique Distriet, Upper and Lower 
Guinea. 
J. LePTOCARPA, Lindau, in Engl. Jahrb. xx. (1894) 70. 
Below Ruchigga, at 5000 ft. Fl. December, 494. 
Distrib. Nile Land, Mozambique District. 
VERBENACE X. 
LANTANA SALVIFOLIA, Jacq. Hort. Schanb. iii. 18. 
Near Mulema. Fl. May, 320. 
Distributed through Tropical Africa, 5. Afriea, and India. 
PREMNA MELANOPHYLLA, 8p. nov. 
P. ramulis divarieatis ultimis foliosis minute fulvo-pubes- 
centibus mox glabris, foliis oppositis petiolatis ovatis vel 
ovato-oblongis acutis interdum brevissime cuspidulatis basi 
