certain Plants formerly referred to the Genus Cinchona. 143 
LUCULIA. Sweet. 
CiNcuoNx sp. Wall. 
Mussanp sp. Don, Prodr. Fl. Nep. 
Calyx 5-partitus: laciniis foliaceis. Corolla tubulosa, limbo 5-loba, zstiva 
tione imbricata. Stamina subinclusa. Anthere lineares. Stigma bi- 
partitum. Capsula bilocularis, ab apice septicido-dehiscens, polysperma. 
Semina peltata, samaroidea, margine membranaceo lacero. 
Arbores (nepalenses) inflorescentid cymosd, bracteatd. 
1. L. gratissima. Sweet. (Cinchona Wall.). 2. cuneifolia (Mussenda Prodr. 
Fl. Nep.). 
PINCKNEYA. Mich. 
CincHonz sp. Poir. 
Calyx 5-partitus ; lacinid alterá maxima, foliaceà, coloratà. Corolla tubulosa, 
limbo 5-fida, zstivatione valvata. Stamina exserta. Anthere peltate. 
Stigma emarginatum. Capsula bilocularis, septicido-dehiscens. Semina 
compressa, margine membranaceo-alata, basi emarginata inserta. 
Arbor (Amer. Bor.) inflorescentid cymosd, bracteolatd. 
1. P. pubeus, Mich. 
It will be seen that the zestivation of corolla affords an important mark in 
distinguishing these groups, which are well defined and very natural. So little 
has this character been attended to among the Rubiacew, that even the illus- 
trious Humboldt has included Lasionema among the synonyms of his Cin- 
chona Condaminea, and M. De Candolle, who appears to have seen samples of 
it, still continues to place it in that genus, from which it is widely different, 
not only in the imbricate estivation of its corolla, but also in the structure of 
the stamens and dehiscence of its capsule. The plate in the Flora Peruviana 
is a very faithful likeness of the plant, the structure of the stamens and the 
zestivation of corolla being there correctly represented. 
