ADDENDA. 589 
1. Wahadenia, Stapf. The genus was rejected by De Wildeman 
(Not. Apocyn. Latic. Congo, 61 e¢ seq.) on the ground that the 
differential characters ‘as summarised in the key ” were insufficient. The 
key, which is merely intended to facilitate naming, contains only a 
selection of more or less salient characters. A more comprehensive 
statement of the generic differences of Vahadenia and Landolphia may 
be found in the note on p. 29. 
1, Vahadenia Laurentii, Stapf Add: Syn. Landolphia 
Laurentti, De Wild. l.c. 60; De Wild. & Gentil, Lian. Caoutch, Congo, 
94, t. xv.— Var. grandiflora, De Wild. in Rev. Cult. Colon. xi. (1902) 
76 and Not. Apocyn. Laticif. Congo, i. 64; De Wild. & Gentil, lc. 
96, differs merely. in having corolla-lobes attaining 16 lin. in length. 
De Wildeman and Gentil describe the fruit as hard as a billiard ball. 
Additional localities—Congo Free State; Lualaba-Kasai District at 
Galikoko-Luebo, Gentil, and near Basenga, Gentil. 
la. Landolphia (Jasminochila) ugandensis, Stapf A 
climbing shrub with long slender branched tendrils from the branch- 
forks, branches of the tendrils slightly recurved, subpungent, the whole 
plant glabrous or the younger parts and inflorescences more or less 
pubescent ; young branches slender, dark reddish-brown, dotted with 
minute lenticels. Leaves oblong to ovate-oblong, shortly and obtusely 
acuminate, almost rounded at the base, 24-3 in. (rarely 4 in.) long, 
1-1} (rarely 14) in. broad, chartaceous, slightly glossy above ; midrib 
slender, channelled above, slightly raised below ; secondary nerves very 
slender, 12-13 on each side, spreading, connected rather close to the 
margins by equally slender arches; network of veins faintly impressed 
above, slightly raised delicate beneath; petiole about 2 lin. long. Corymbs 
subsessile or on peduncles up to over } in. long, 12~16-flowered, dense, 
at last lengthening out into a short raceme; bracts ovate to lanceolate, 
up to 1 lin. long; pedicels 1-2 lin. long, bracteolate. Calyx 1-1 lin. 
long, usually ciliate, sometimes sparingly pubescent on the back, rarely 
eciliate and quite glabrous; sepals broad, ovate, obtuse, margins thin. 
Corolla up to 8 lin. long in bud; tubes 3}—4 lin. long, slightly widened 
below the middle, rather slender, hairy within above the stamens, 
otherwise glabrous ; lobes linear-oblong, obtuse, 3}—4 lin. long, 1-1} 
lin. broad, silky at the very base. Stamens inserted 14-14 lin. above 
the base of the corolla-tube; anthers lanceolate-oblong, scarcely } lin, 
long. Ovary ovoid, quite glabrous ; style and stigma 4—} lin. long. 
Fruit globose (Dawe) with light brown lenticels. 
Nile Land. Uganda: Buddu; Dumu Forest, 4000 ft., Dawe, 23! 
Very similar to L. watsoniana and L. kilimandjarica, but. differing from the 
former in the very short style and the corresponding low position of the anthers ; 
from the latter in the hairiness of the inner side of the corolla-tube, the compara- 
tively low insertion of the stamens and the somewhat different venation of the 
leaves. Z. Buchananii and L. Cameronis have corolla-lobes distinctly longer than 
the tube. 
