62 
the greater part of tropical Africa; they are found in the rene 
finds and "eds Ge cepting Voacanga which is not known from 
India proper) in Ceylon. and Western India, whence they spread 
more or less into the Malayan region. One of them is, moreover, 
represented by numerous species in the New World, namely, 
Rauwolfia. This distinct differentiation of the genera of 
yocynaceae in the African and the Indo-Malayan region suggests 
an S eie evolution of the order in the two areas for a very 
long time. 
A glance at the Malayan species of Kickxia is sufficient to show 
that the case of Kickxia is no exception to this theory. In fact, 
2 d 
an 
equally conspicuous morphological differentiation. I gies this 
very summarily before the Linnean Society more ey 
ago (Proc. Linn. Soc. December 7, 1599), and a little more fally i in 
Hooker's Icones Plantarum, sub tt. 2694-2695. To make, however, 
the matter perfectly clear, I will place side by side the diagnoses 
of the two groups, as drawn from the material in the Kew 
Herbarium. r 
MALAYAN GROUP. AFRICAN GROUP, 
Calyx ad basin 5-partitus, intus | Calyx ad basin S-partitus, - — 
glandulis munitus, persistens ; seg- glandulis munitus, persistens; seg 
menta imbricata, anguste vel late menta imbricata, lata, magis minusve 
ovata, acuta vel obtusa; glandulae obtusa; sandule numerosae vel pau- 
numerosae, pargas dispositae, fim- cae, semper applanatae, sapnaiath 4p. 
ester oe ee ulae cum uno- emen 
qn sewer? iue arcte appressae, 
appo 
Corol la : jinfeibiliformis be ig Corolla hy . peers eec gm ha, 
majuse — 
vula; tubus brev ge vel nile 
dum aie, red e yir tie- supra Boer orien superne cras- 
iricosa cylindricus vel gradatim |  sissimus, carnosus, oe sie — 
` attenuatus, supra cupulae vel campan- | prominente - cincto poriformi ; 
lobi 
modo ampliatus, ad constrictionem lineares vel o aori, praefloratione dex- 
magis minusve incrassatus et annulo trorsum obtegen 
i obi ob 
tamina 5, annulo tubi inserta, in | Stamina 5, in medio tubo inserta, 
conum circumcirca liberum $n tubum in conum os vic attingentan arcte inclu- 
Ss Lis suat conniventia ; sum conniventia 4 filamenta brevis- 
. fi brevissima, crassa; an- sima, crassa ; antherae sagittatae intus 
eee: if euinss intus basi glandula basi glandula viscose munitae, cruribus 
viscosa munitae, cruribus duris soli- duris solidis quam filamentis sub- 
dis filamentis aequilongis, loculis an- longioribus ; pee ulis angustissimis 
issimis brevibus. brevibus. 
Discus breviter tubulosus, subin- | Discus breviter tubulosus, 5-lobus 
teger vel 5-lobus, tenuiter carnos vel 5-partitus, earnos 
e 
Carpella libera, ovato - lanceolata, Carpella libera, brevia truncata 
sensim in stylum attenuata, e disco lateraliter abrupt: in stylum constricta, 
exserta, glaberrima ; styli filiformes, '0 exserta vel ab eo paulo superata, 
; sti ovoide vertice pub ; Styli filiform: 
tum, ope anthe glandularum ti; stigma ovoideo-cla- 
con rens; placentae vatum, ope antherarum -— 
bipartitae, lamellis liberis pomos li 
ad basin Teens ; placentae ad 
peti facie d ovulis multi- bipartitae, rita garpellé lateri 
obsitis, Mural Lien is facie dorsali 
ovulis m ms obsitis 2 
