Notes on certain Asiatic Styracaceae. 
BY 
WILLIAM WRIGHT SMITH, M.A. 
THE species described in the following paper are :— 
Parastyrax Lacei, W. W. Sm., p. 232. 
Pterostyrax burmanicus, W. W. Sm. et Farrer, p. 233. 
Styrax shweliensis, W. W. Sm., p. 236. 
The recent acquisition by the Royal Botanic Garden of. 
important collections of Asiatic plants such as the herbaria of’ 
Léveillé and of Lace and the material resulting from the further 
explorations of Forrest, Farrer, and Ward in Yunnan and Upper 
Burma have elucidated various problems which from the paucity 
of specimens previously available presented many difficulties to 
the student of the flora of these regions. Among other orders 
this is true of the Styracaceae, and in addition to the description 
of three new species the present short paper gives a fuller 
account of two Burmese plants previously imperfectly known. 
Of the three new species described, one, Pterostyrax bur- 
manicus, W. W. Sm. et Farrer, is an interesting extension west- 
wards of the genus, and incidentally an example of the import- 
ant results which will attend an adequate exploration of the 
alpine regions of Burma. The two previously known Burmese 
plants for which I have had to form new names are also of 
interest. Styrax Buchananii is I believe equivalent to a plant 
collected long ago by Griffith, which has remained inadequately 
described under a varietal name until the collections of 
Buchanan and Lace came to aid the solution. The other 
described by the writer in 1911 as Styrax Lacet is in the light of 
the further material secured by Lace not to be retained in that 
genus, but forms the basis of a new genus Parastyrax. The 
fruit is now available and separates the plant from both Styrax 
and Pterostyrax. 
Parastyrax, W. W. Sm. Genus novum Styracacearum. 
Genus a Styrace, Linn., ovario infero recedens ; Pterostyract, 
Sieb. et Zucc. valde affinis sed calycis tubo infra ovario adnato 
[Notes, R.B.G., Edin., No. LIX, May 1920.] 
