299 
17-20 cm. longa, 6—S cm. lata; nervi laterales utrinsecus circiter 8, 
superne inconspicua, subtus costa nervisque caro ner 
petioli versus apicem basimque atro-virides, 1-5-3 cm. longi. 
Inflorescentia laxe paniculata, pauciflora, usque ad 20 cm. longa, 
ramulis inferioribus 2 cm. longis furcatis, rachide pubescenti; 
bracteolae primariae persistentes, ovatae, acutae, margine ciliatae, 
3 mm. longae; pedicelli 3-5 mm. longi. Sepala rotundata, 
fimbriata, 3 mm. longa. Petala oblonga, basi sensim angusta, 
apice subacuta, 5 mm. longa, 3 mm. lata. Stamina basi adnata; 
thecae appendiculis dorso toto adnatae; appendicula acuta, 
5mm. longa; connectivum ultra thecas vix productum. Ovarium 
globosum, glabrum. 
TropicaL Arrica. Gabon; Mfoa, shrub 6-8 feet high, 
flowering and young fruit October, Bates 563. 
New Combinations. 
The following Upper Guinea species do not seem to have 
been referred to Rinorea since the re-establishment of that name 
for the genus. 
Alsodeia Johnstonii Stapf. = Rinorea Johnstonii Chipp. 
A rast Stapf. = »  prasina Chipp. 
‘ crassifolia Bak.f.=  ,, crassifolia Chipp. 
i obanensis Bak. f.= .,  Obanensis Chipp. 
.  Palbotii ~ Bak. £. Talbotii Chipp. 
XXIX.—AFFINITY OF RHODODENDRON 
_ MICRANTHUM. 
J. HuTCHINSON. 
The family Ericaceae is particularly interesting in the group 
Gamopetalae on account of several primitive features whic 
point to alliance with the Polypetalae. Even in Ericaceae there 
are several genera which are characterised by having free petals. 
These are Leiophyllum, Ledothamnus, Cladothamnus, LEllittia, 
Ledum and Befaria. And in endeavouring to trace the phylogeny 
of those more numerous genera with united petals, one would 
naturally turn to the more primitive ones such as those mentioned. 
In revising the arrangement of these in the herbarium recently, 
I was impressed by the great resemblance of Ledum glandulosum 
Nutt., with Rhedodendron micranthum Turez. The true affinity 
of Rhododendron micranthum (figured in Botanical Magazine 
t. 8198) has long been rather a puzzle. It belongs to the lepidote 
group of the genus, and has very small and numerous flowers 
arranged in terminal racemes. It occurs near the summits of 
the mountains from Western Szechuan tothe Pekin district, i.e. 
almost throughout Northern China. Ledum glandulosum Nutt. 
has a wide range at high altitudes on the Rocky Mountains from 
Alberta and British Columbia to balapis: and California. The 
