Tas. 8616. 
DORSTENIA yamBuyaeEnsis. 
Belgian Congo, 
Urticacear. Tribe Morrar. 
Dorsrenta, Linn.; Benth. et Hook. f. Gen. Plant. vol. iii. p. 366. 
Dorstenia yambuyaensis, De Wild. in Ann. Mus. Congo, sér. 5, vol. ii. 
p. 241; vol. iii. p. 66, t. 5, p. 67, fig. 2 et 3; affinis D. Mannii, Hook. f., 
sed receptaculi processubus multo longioribus et pinnatisectis differt, 
Herba ad 30-50 cm. alta. Caulis erectus, dense subhispido-pubescens. Folia 
alterna; petioli 6-10 mm. longi, subhispidi; laminae 7-16 cm. longae, 
4-7 cm. latae, elliptico-lanceolatae, abrupte et obtuse acuminatae, basi 
cuneatae, margine irregulariter dentatae dentibus 1°5-7 mm. longis 
obtusis, utrinque glabrae, supra nitidae. Stipwlae 3-10 mm. longae, 
filiformes, hispidulae. Pedunculi axillares, solitarii, 2°5-4°5 cm. longi, 
subhispidi. Receptacula angulato-orbiculata disco 1°5-2 em. diametro, 
anguste alata et processubus 1-11 cm. longis circumdata processubus 
longioribus basi pinnatisectis, dorso tenuiter subhispida, viridia. Flores 
mascult 2-4-andri. Flores feminei inter masculos dispersi; ovarium 
ovoideum in stylum bifidum attenuatum.—N. E. Brown. 
The interesting Dorstenia which we figure here is a 
native of the Belgian Congo, in some districts of which 
territory it is plentiful. For its introduction to cultiva- 
tion we are indebted to the efforts of the Director of the 
Botanic Garden at Eala in the Equatorial Province, 
whence living plants appear to have reached the Colonial 
Garden at Laeken near Brussels about the year 1907. 
It first became known to English horticulture in October, 
1910, when a plant was exhibited at a meeting of the 
Royal Horticultural Society by Messrs. J. Veitch and 
Sons on behalf of the Director of the Royal Botanic 
Garden at Brussels. This plant was thereafter presented 
to the Royal Gardens at Kew, and forms the subject of 
our illustration. D. yambuyaensis is a plant of erect 
habit and produces its flowers at the tips of slender 
axillary peduncles when it is about a foot and a half 
high. As an addition to our tropical greenhouses this 
species is remarkable for the much elongated pinnatisect 
processes of the receptacle, a character which at the 
same time readily distinguishes it from its congeners. 
JUNE, 1915. 
