46 
vii. 1900, p. 744) from the lower Congo, and K. “iar 
De Wild. (1. ¢. p. big also from the lower Congo. Of these, how- 
ever, the four last named ‘species have, on closer eucatan n, 
been found to be identical with K. Ne aes and K. latifolia 
respectively. 
Taken in the sense of the Genera Plantarum and all the cree 
authors, the genus Kickxria ee therefore appear to inhabit t 
widely remote areas—one in the Malayan region, with four Ascsiag. 
nd the other in tropical Africa, with three species. Cases 0 
Apocynacee ; but they are rare. Of the 100-105 Apocynaceous 
genera which inhabit the tropics of the Old World, only 12 
are common to Africa and Asia, and of these five not extend 
from the Indo-Malayan region farther west than the Mascarene 
Islands or the East Coast of Africa, whilst one (Wrightia) is 
t —— in c ly i atal. aining six 
genera (Carissa, Rauwo sets Alstonia, ae Holarrhena 
and - Seroplushtiee may be said to range fairly continnonsy over 
the greater part of ropical fomidy they are ihe hte e Mascarene 
Islands and again (excepting i sda which is ah seen from 
India proper) in Ceylon and Western India, whence they spread 
more or less into the Wslavin region. One ‘of them is, moreover, 
represented by numerous species in the New World, namely, 
Rauwolfia. This distinct differentiation of the genera of 
A ace in the African and the Indo-Malayan region suggests 
, i ereenseat evolution of the order in the two areas for a very 
ong tim 
A eae at the Malayan species of Kickxia is sufficient to ent 
that the case of Kickvia is no exception to this ~~ ory. In fac 
the geographical separation of the two groups nt aa with a 
equally conspicuous morphological differentiation, I stated this 
very summarily before the Linnean Society more than a08 years 
ago (Proc. Linn. Soc., December 7, ade and a little more fully in 
Hicks Foon Plantarum, sab t. 2694-2495. To make, however, 
the matter bgiltenes. clear, T will place side by side ihe ’ diagnoses 
Ss thet Ss oups, as drawn fr rom the material in the Kew 
MALAYAN GROUP. AFRICAN GROUP. 
Calyx ad basin 5-partitus, intus|Calyx ad basin 5-partitus, intus 
glandulis munitus, persistens ; HS glandulis munitus, persistens ; seg- 
menta imbricata, anguste vel menta imbricata, lata, magis eye sve 
ovata, acuta vel obtusa ; glandule | obtusa ; glandule numerose vel pau- 
numerose, annulatim disposite, fim- | cx, semper applandte, preewtrF ap- 
brilliformes, aut ‘aagule oO cum uno- | presse, , 
bet, wd seqmento eique arcte appress@ 
appre 
Corolla nf unasbuiformiy Prindtgal Corolla  hypocraterimorpha, par- 
majuscula ; tubus ad vel supra Pat vula; tubus brevis, medio vel paulo 
dium constrictus, infra e basi subven- | supra medium ventricosus, Far apy eras- 
indricus vel gradatim | sissimus, carnosus, ore mule aaa 
attenuatus, supra cupulae vel ere rominente cincto pio rmi; lob 
ulae modo ampliatus, ad — nem ineares ve hamebg geotientioet dex- 
magis minusve iner s et Siete | trorsum obtegentes 
intus pomnggsarte mit, lobi ob--| 
obliq ai, ae | 
magis m 
foratione Scien | obteg 
