301 
Staff . — On the Sonerileae of Asia. 
Western Ghats with the exception of S'. zeylanica which 
occurs also in Borneo. Thus it intrudes into the area of 
another group of close affinity although of, at least for the 
present, sufficiently marked character. This is the : — 
V. Group of S. tenuifolia. From Malacca and Sumatra 
to Borneo. 
1. S . -tenuifolia) Bl. From Malacca and Sumatra to Borneo. 
S', tenuifolia is exceedingly like S. zeylanica v. ajfinis in habit, 
and differs chiefly in the more campanulate (instead of 
obconic) shape of the calyx and the short capsule. The 
anthers are acute, but neither acuminate nor rostrate, and 
about 4 mm. long, being thus intermediate between those 
of the two varieties of S'. zeylanica. The species was found 
in Borneo at Sarawak by Hullett and Haviland and on 
Kinibalu, at 1800 m. by Low. It is, in contradiction to 
S'. zeylanica , remarkably uniform. 
This group is represented by several species, but we know 
yet very little of them, and it is only with reluctance that 
I link to it several of the Malayan species which I know 
only from description. 
2. S. laeviuscula , Zoll. & Mor. Java, Celebes. 
3. S'. biflora , Zoll. & Mor. Java, Billiton. 
4. S'. Impatiens , Becc. Sarawak. 
5. S. purpurascenS) Becc. Sarawak. 
6 . S. triflora , Cogn. Sarawak. 
S'. Impatiens , purpurascens , laeviuscula , and biflora were 
placed near S', rhombifolia , and seem, as far as I can judge 
from the descriptions, to form a link closely attaching the 
zeylanica-G roup, whilst S. triflora appears almost identical 
with S', tenuifolia. 
7. S', insignis , Bl. Sumatra. This species, which was put 
nearest to S. speciosa by Cogn., belongs, as far as I can deduce 
from the description, probably to the tenuifolia-^ roup. 
The affinity of this group and the first is in any case so 
great that I expect both will appear one when more 
complete material is to hand. 
