612 ADDENDA. 



an attenuated base, obtuse, 11 in. long, | in. in diam. Seed-plumes 

 slightly greyish, about 1 J in. long. 



Upper Guinea. (Add)— Cameioons : Bipiiule, Zenker, 2424 ! 2607a ! 2538 ! 

 2208 ! distributed as O. nitida, Benth. 



2. Oncinotis nitida, Benih. 



Upper Guinea. (Add)— Togo : near Lome, Warnecke, 45a ! 



6a. Oncinotis thyrsiflora^ K. Schum. MS. Young branches 

 finely rusty-pubescent, compressed at the tips, soon terete. Leaves 

 oblong to lanceolate-oblong, attenuated into a long acute acumen (up to 

 almost 1 in. long), shortly acute or obtuse at the base, 2J-5 in. long, 1 

 to almost 2 in, broad, thinly papery, very sparingly and minutely 

 pubescent below on the nerves or quite glabrous ; secondary nerves 

 5-6 on each side, but particularly below ; reticulation very loose ; petiole 

 pubescent, slender, 2-3 lin. long. Panicle subterminal, ovoid, about 

 1 in. long (without the peduncle), rusty-pubescent ; peduncle slender, 

 much compressed, about 1 in. long ; bracts minute ; pedicels 1 lin. long. 

 Calyx I lin. long ; sepals broad ovate, subobtuse, thin, delicately and 

 sparingly pubescent, eglandular. Corolla-tube slightly wider above the 

 middle, Ij lin. long, finely tomentose outside ; throat-scales rotundate- 

 ovate, J lin. long ; lobes oblong, obtuse, slightly longer than the tube. 

 Anthers 1;^ lin. long. Carpels delicately velvety. 



Upper Guinea. Cameroons : Bipinde, Zenker, 2588 ! 



Allied to O. gracilis, but the indumentum is much more delicate and scanty, 

 the nervation bolder, the acumen longer, the petiole shorter, sepals and corolla-lobes 

 and throat-scales broader. 



7. Oncinotis gracilis, Stapf. 



Upper Guinea. (Add) — Gold Coast*: Acropong, J'o/iwsow, 902 ! 



Oncinotis chlorogena, K. Schum., which is fully described by K. Schumann in 

 Engl. Jahrb. xxxiii. 320, appears from the description to be identical with 

 gracilis. 



8. Oncinotis hirta, Oliv. Add : De Wild. Notes Apocyn. 

 Laticif. Congo, 7. 



Iiower Guinea. (Add) — Lower Congo : Kisantu, Qillet. 

 Gillet states that the latex of this species yields caoutchouc if treated with the 

 acid juice of an Amomum called " Minkenie" by the natives. 



10. Oncinotis subsessilis, K. Schum. in Engl. Jahrh. xxxiii. 

 321. A climbing shrub ; branches very slender, terete, or compressed 

 when young, rusty-tomentose, tardily glabrescent. Leaves linear- 

 oblong, shortly and acutely acuminate, rounded or subcordate at the 

 base, 1-| to almost 4 in. long, ^ to over 1 in. broad, glabrous above, 

 puberulous below, particularly on the nerves ; secondary nerves 5-6, 

 like the veins prominent below. Panicles trichotomous, dark rusty- 

 tomentose all over, shortly peduncled, bracteate ; bracts oblong- 



