ADDENDA. 5g9 



1. Vahadenia, Stapf. The genus was rejected by De Wildeman 

 (Not. Apocyn. Latic. Congo, 61 et seq) on the ground that the 

 diflferential 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 

 Laurentii, De Wild. I.e. (U) ; De Wild. A: Gentil, Lian. Caoutch. Congo, 

 94, t. XV. — Var. grandijiora, De Wild, in Rev. Cult. Colon, xi. (r.M»2) 

 7G and Not. Apocyn. Laticif. Congo, i. 04 ; De Wild, ct Gentil, I.e. 

 9G, differs merely in having corolla-lobes attaining 10 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. 



\a. 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, 2^—3 in. (rarely 4 in.) long, 

 1-1^ (rarely 1 1) 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 h in. long, 12-lG-flowered, den.se, 

 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 A lin. 

 long, usually ciliate, sometimes sparingly pubescent on the bnck, 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 .stamenB, 

 otherwise glabrous ; lobes linear-oblong, obtuse, 3i-4 lin. long, 1-1 1 

 lin. broad, silky at the very base. Stamens inserted IJ-H lin. above 

 the base of the corolla-tube; anthers lanceolate-oblong, scarcely \ lin. 

 long. Ovary ovoid, quite glabrous; style and stigma A-J lin. long. 

 Fruit globose {Dawe) with light brown lenticels. 



Wrile Iiand. Uganda: Buddu ; Dumu Forest, 4000 ft., Dawe, 23 ! 



Very similar to L. watsoniana and L. kilimandjarica, but diflFeriiip from thf 

 former in the very short style and the corrosiMiiidinp: low position of the anther* ; 

 from the latter in the hairiness of the inner side of t lie eorolla-tuhe, the compara- 

 tively low inserticm of the stamens and the somewliat different venation of tlie 

 leaves. L, Buchananil and L. Cnmeronis have corolla-lobes distinctly N.n^'er than 

 the tube. 



