Staff. — On the Sonerileae of Asia. 31 1 
The species constituting this group are distinguished by the 
presence of six stamens. In S'. obliqua three are of a different 
shape and colour. Both kinds seem to be fertile, but the 
pollen in the yellow and smaller anthers is not isodiametric 
in a wet state, but decidedly shorter in two directions, the 
axes being 15 : 10 : 10, instead of 15 : 15 : 15. The larger 
and purple stamens are episepalous and thus correspond with 
the one series present in the three-staminal Sonerilas. The 
plant is an erect, but rather flaccid and somewhat succulent 
annual, and inhabits wet rocks and dense shady forests. The 
leaves are often very asymmetric and those of one pair very 
unequal in size. They are thinly membranaceous and often 
become patched like those of the maculata-group. They have 
2-3 side nerves entering the blade at the very base and con- 
nected with each other and with the middle nerve by distinct 
transversal nerves which diverge at an angle of 70-90° and 
run straight or with a slight flexure to the next outer nerve. 
The axillary inflorescence consists of moderately long-pe- 
duncled circinoid cymes. The capsules are sessile with six 
obtuse ribs in the upper two-thirds and of the shape of short 
inverted pyramids. They are not unlike those of 5 . maculata, 
but shorter. .S', teysmanniana appears from the description 
to be exceedingly near S. obliqua. 
3. S . junghuhniana ) Miq. Sumatra. 
It is said to have less unequal leaves and anthers, and these 
are all yellow and sagittate at the base. 
XI. Group of S. molueeana. From Penang throughout 
the Malayan Archipelago to Western New Guinea. 
It is distinguished by very unequal leaves, one of each pair 
being much reduced, by a usually dense strigillose tomentum 
and short subsessile capsules which are generally bullate- 
rugose. The larger leaves are mostly more or less asymmetric 
and sometimes contracted above the base, and the larger half 
is often produced into a rounded auricle which overlaps the 
petiole. 
1. X. molueeana , Roxb. Malayan Peninsula, south of Penang, 
Sumatra, Java, Billiton, Borneo. 
Y 
