Tabernantke.] Lxxxiv. apocynace.« (staff). 125 



Date, one of each pair usually sessile or subsessile and more or less 

 roanded at the base, the other shortly petioled and acute or subiicute at 

 the base, those of each pair equal, or one of them much smaller, the 

 larger leaves 4-G in. long, 1 J-2 in. long ; secondary nerves 8-10 ; veins 

 inconspicuous. Inflorescences subcorymbose, few- flowered, minutely 

 bracteate, much shorter than the leaves, on very slender peduncles up 

 to 1 in. long; pedicels up. to 3 lin. long. Calyx deeply 5-partite, 

 J lin. long ; segments rotundate, sparingly and minutely ciliolate, the 

 iuner with 1 or 2 minute glands inside the base. Corolla yellowish, 

 with red spots in the centre; tube cylindric from an ovoid base, 2 lin. 

 long ; lobes broad, obovate, shorter than the tube. Stamens inserted 

 at the middle ; anthers over 1 lin. long, reaching to the mouth. — 

 Stapf in De Wild. <fe Durand, Contrib. Fl. Congo in Ann. Mus. Congo, 

 Bot. ser. 2, i, fasc. 1. o8, and fasc. 2, 40. 



]Lower Guinea. Lower Congo : Lemba, Cahra ; Dewevre, 361 ! 



Soutb Central. Congo Free State : Stanleyville, Demeiise ! 



Imjjerfectly known species. 



(). Iboga vateriana, J. Br. d- K. Schum. in Danckelmann, 2fitth. 

 Deutsch. Schutzgeh. ii. 172. A glabrous shrub or small tree, with slender 

 dichotomous branches. Leaves oblong, acuminate, mucronulate, acute 

 at the base, 3^-6 in. long, yf-l J in. broad, membranous ; secondary 

 nerves 6-8 on each side. Inflorescences geminate, terminal, shortly 

 racemiform, few-flowered, |-1J in long; bracteate. Calyx ^ lin. long; 

 eglandular. Corolla-tube 2 lin. long ; lobes 1 lin. long. Anthers 1 J 

 lin. long. Style 1\ lin. long. Fruit oblong with an incurved tip, 3| 

 in. long, 7 lin. in diam. 



Upper Guinea. Cameroons : littoral forests near Batanga, Braun. 



This is, no doubt, a species of Tabernanthe, as K. Schumann himself has jjointed 

 out (Engl. & Prantl, Pflanzenfam. iv. ii. 146), and may be identical with one of 

 the species described above. 



18. PTEROTABERNA, Stapf. 



Calyx small, subherbaceous ; sepals 5, ovate, with several small, 

 flat glands inside the base. Corolla small, salver-shaped ; tube cylindric, 

 slightly widened in the upper third, thin, naked at the mouth ; lobes 

 overlapping to the left, inflexed in bud, oblique. Stamens in the widened 

 part of the corolla-tube, erect; filaments very short, distinct, scarcely 

 decurrent ; anthers linear-oblong, acute, minutely and acutely 2-lobed 

 at the base ; anther-cells polliniferous and dehiscent to the base of the 

 apiculate lobes. Disc 0. Ovary apocarpous ; carpels 2, slightly coherent, 

 lanceolate-ovoid ; style filiform ; stigma capitate, placed about the middle 

 of the corolla-tube and distant from the anthers, not apiculate, slightly 

 viscous ; ovules about 20 in each cell, approximately 4-seriate. jSIericarps 

 in pairs, or solitary by abortion, subbaccate, ovoid, rather flat on the face, 

 with 3 narrow wings (2 lateral, 1 dorsal) ; pericarp thin, subcrustaccous; 



