The fruit suggests so obviously some affinity with Pterospermum, that it is next necessary to institute a comparison with that genus. Stellate pubescence, a calyx divided into five portions, five hypogynous unguiculate petals, and fifteen fertile stamens united into a cup, seated on a stipitiform torus, and surrounding the ovarium, a five-celled ovarium, a woody five-celled capsule, with a loculicidal dehiscence, no axis, and winged seeds; all these characters are common to Pterospermum and our plant; but on the other hand the points in which they differ are of much importance. The æstivation of Pterospermum is valvate recurved not imbricate; its calyx is five-parted, not four—five-toothed; its anthers have parallel not divaricating cells, and are seated upon long distinct filaments, not sessile, upon the outside of a capituliform cup; and finally the petioles of the leaves are not connected with the lamina by a thickened space. The seeds are also winged at the apex, not at the base, but upon this point it is not my wish to insist. If the comparison thus instituted with Pterospermum and Sterculia be attentively considered, we cannot fail to remark that the subject of these observations is nearly equally related to both; to Pterospermum in its petals and fruit, to Sterculia in its calyx and stamens. It must, therefore, be stationed between those two genera, thus confirming the propriety of M. [p112] Kunth’s combination of the Sterculiaceæ of Ventenat with the Byttneriaceæ of Mr. Brown; and, in fact, breaking down every barrier between them. There are many other points that will suggest themselves to the Botanist, in which this plant is highly worthy of consideration, but for the present it will be enough to give the botanical characters with which it may stand recorded. It is named in honour of John Reeves, Esq., now resident at Canton, to whom we are indebted for our knowledge of it, from whose unwearied exertions in the cause of science the botany of China has received material assistance, and to whom our gardens are indebted for many of the fairest ornaments they contain. REEVESIA. _Ord. Nat._ BYTTNERIACEÆ; _Sterculiam_ (_Erythropsin_) _inter et terospermum_.