146 Lxxxiv. APOCYNACE.^ (stapf). \Conopharyngia. 



white, fragrant; tube very fleshy, wide, oblong-elUpsoid, constricted 

 below the mouth, 1 in. long or shghtly longer, 4-5 lin. wide, densely 

 tomentose within except along the middle lines of the filamental ridges 

 and short lines between the bases of the stamens ; lobes oblong, 8-18 

 lin. long, margins wavy. Stamens inserted at the middle of the corolla- 

 tube ; anthers 6 lin. long, almost reaching the mouth. Style 5 lin. 

 long. — Taherncemontana pachysiphon, Stapf in Kew Bulletin, 1894, 22. 



upper Guinea. Lower Niger: Onitsa, Barter, 1328! Lagos; Ibadan 

 Forest Reserve, Punch, 146 ! 



Leaves sent by Miss Gurney from " West Africa " under the name Kpokpoka 

 belong very probably to this species. Tliey were referred by Morris (in Journ. Soc. 

 Arts, xlvi. 778), to C. crassa, which is stated there to yield part of the rubber of 

 Sierra Leone and the Gold Coast. Neither C. crassa nor C. pachysiphon have been, 

 so far, observed in these colonies, and experiments made in Ceylon to obtain rubber 

 from a cultivated specimen of " Taherncemontana crassa " have been unsuccessful 

 (see Vilbouchevitch in Warb. Plant, a Caoutch. 208, in note). 



1 referred (in De Wild. & Durand, Contrib. Fl. Congo in Ann. Mus. Congo, Bot. 

 ser. 1, i. fasc. i. 40) a plant collected by Dewevre on the Upper Congo near Kasongo 

 to this species. Having revised tliis group since,' I have no doubt now that 

 Dewevre's plant does not belong here, but am unable to assign it to its proper place 

 in the absence of the specimen. 



10. C. Holstii, Stapf. A tall tree with very hard wood; bark 

 dark green, at length whitish ; branches stout. Leaves oblong to 

 elliptic-oblong, acute at both ends or the tips apiculate, up to 10 in. 

 long and 4 in. broad, subcoriaceous ; secondary nerves 12-15 on each 

 side, rather spreading and straight ; petiole stout, 6 lin. long. Inflor- 

 escences loosely corymbose ; peduncle stout, 2 J-5|- in. long ; bracts 

 ovate, acute, early deciduous ; pedicels J-1 in. long. Calyx 3-3 J lin. 

 long ; sepals suborbicular, ciliolate. Corolla white, yellow in the centre, 

 fragrant ; tube very fleshy, wide, up to 5 lin. in diam. at the middle, 

 1 in. long, densely tomentose within except along 5 lines below the 

 stamens; lobes oblong, as long as the tube or longer, margin crisp. 

 Stamens inserted at the middle of the corolla-tube ; anthers 5 J lin. long. 

 Style 5-6 lin. long. Berries blackish-brown, globose, 4 in. in diam., with 

 a ventral groove and 2 faint lateral ridges. — Taherncemontana Holstii^ 

 Engl. Pfl. Ost-Afr. A. 86, 88 ; Pax in Engl. I.e. B. 352 ; K. Schum. in 

 Engl. I.e. C. 317, and in Engl. & Prantl, Pflanzenfam. iv. ii. 148; 

 SchefHer in Notizbl. Konigl. Bot. Gart. Berlin, iii. 143. Voacanga 

 Holstii, Engl. Glied. Yeg. Usambara, 48, 52 (name only). 



Wile ]band. Uganda : Entebbe, Whyte ! and without precise locality, 

 Johnston ! 



IMEozamb. Sist. German East Africa : Usambara ; Nderema (Ngerema ?) 

 Solst, 2247 ! VolJcens, 134 ! Seheffler, 9 ! Nguelo, Kummer, 28 ! 



11 C. angolensis, StapJ. A small tree, 12-26 ft. high ; branches 

 stout, terete, olive-green when dry. Leaves oblong-elliptic, very shortly 

 acuminate or acute, acute at the base, 7-11 in. long, 3-4 in. broad, 

 subcoriaceous, glossy when fresh, dull when dry ; secondary nerves 9-12 

 on each side; petiole stout, 4 lin. to 1 in. long. Inflorescences geminate 

 or 3-nate, corymbose, few- or many-flowered ; peduncles stout, up to 5 in. 



