316 Stapf — Ou the Sonerileae of Asia. 
i. Ph. gymnantha, Korth. South-east Borneo. 
3. Ph. tonkinensis , Stapf (Syn. S'. tonkinensis , Cogn. Mel. 
1184). Tonkin. 
This plant has all the characters of a true Phyllagathis , 
but for the calyx-teeth not being bristly. They have the 
characteristic dorsal wing though it is a little smaller than in 
the other species, and exactly the same anthers and similar 
capsules as Ph. rotundifolia. 
There is very probably another Phyllagathis in South China. 
Unfortunately the specimen in the Kew Herbarium has only 
ripe capsules, no flowers. It has a short creeping stem with 
a rufous tomentum, long petioled almost orbicular-cordate 
leaves, and long peduncled umbel-shaped cymes. It seems 
to come near Ph. tonkinensis. It was collected by R. Swinhoe 
in the interior of the province of Fokien. 
There is no doubt that Ph. rotundifolia is much more 
remote from Ph. tonkinensis and Ph. gymnantha than these, 
are from each other, so that two groups can be distinguished 
within the genus, one in Sumatra and the Malayan Peninsula 
and the other in Borneo, Tonkin, and South China. 
Brittenia, Cogn. 
Distr. Sarawak. 
I know this genus only from the description and a tracing 
of a leaf, which I owe to the kindness of M. Cogniaux. It 
exhibits evidently the habit of Phyllagathis which it re- 
sembles in the venation of the leaves, the inflorescence 
and the winged calyx-teeth. But the flowers are penta- 
merous ; the ten stamens are equal, and the anthers have 
an appendix in front and a long spur at the back. The 
fruit is not known. But I suspect that a specimen with ripe 
capsules, sent by Dr. G. D. Haviland from Sarawak, should 
be referred to Brittenia. The leaves exhibit exactly the 
same venation as Cogniaux’s tracing shows, and the capsules 
are 5-merous, arranged in an umbel-shaped cyme which is 
supported by a long peduncle. It is true G. D. Haviland 
states on the label ‘ stamens 8, blue.’ Unfortunately he did 
