122 MR. BENTHAM ON MALVACEJE AND STERCULIACES. 
natural as could have been wished. The two first genera, Seringia 
and Keraudrenia, are well separated from all the others by their 
ripe carpels distinct or solitary, not forming a loculicidal capsule ; 
and the two are equally well distinguished by the seeds ellipsoid 
with a straight embryo in Seringia, reniform with a curved embryo 
in Keraudrenia. The calyx and habit of the former also approach 
those of Commersonia, whilst those of Aeraudrenia are nearer to 
Thomasia and Lasiopetalum. But Seringia must be understood 
as originally limited by Gay, and S. nephrosperma, F. Müll., trans- 
ferred to Keraudrenia. Of the remaining six genera which we 
have adopted, three (Thomasia, Guichenotia, and Hannafordia) 
have the anthers opening in pores; and in three (Sarotes, Lasio- 
petalum, and Lysiosepalum) they open in slits. — Gwichenotia, 
Hannafordia, and Sarotes are distinguished by their calyx marked 
when enlarged by 3 or 5 prominent ribs on each sepal, and Han- 
nafordia by the lanceolate petals much more developed than in 
other Lasiopetalee ; and lastly, Lysiosepalum, F. Müll., which I 
have not seen, is said to be well marked by the sepals entirely 
free from the base: but all these must be admitted to be rather 
artificial than natural distinctions. 
As to the other proposed genera, we would reduce Leucothamnus, 
Lindl., and Rhynchostemon, Steetz, to Thomasia; Ditomostrophe, 
Turezan., to Sarotes ; and Corethrostyles, Endl., and Asterochiton, 
Turezan., to Lasiopetalum. 
The apparently ternately verticillate leaves of Guichenotia, Sa- 
rotes, and some Lasiopetala, in which one leaf is always larger 
than the two others, appear to correspond to the leaf with two 
leaf-like stipules of other Lasiopetala and of Thomasia. In a few 
Lasiopetala the leaves appear to be really opposite, which is, I 
believe, the only instance in the whole Order of Sterculiacee. 
During the ten months which have elapsed since this paper was 
sent in to the Society, fresh materials have accumulated, which 
have enabled me to make some slight improvements in the arrange- 
ment of a few genera, as well as a few additions, but not so as to 
interfere with the observations above given. The Kydia axillaris of 
Thwaites, now that the flower is known, proves to be a new genus 
allied to Julostyles, to which must also be referred K. jujubifolia, 
Griff. As Mr. Thwaites did not send any name with his notes, 
we have given it that of Dicellostyles, in allusion to its forked style. 
A Mauritius specimen, long overlooked among the unnamed ones 
in the Hookerian herbarium, can only be referred to a new genus, 
