168 
first winter and remain that colour for several years. The leaves 
assume a golden hue before they fall. It was introduced by means 
of cuttings and living plants to the Arnold Arboretum in 1909, and 
thence to Kew the following year. 
EXPLANATION OF PLATES. 
he Gees Jacquemontii, Decaisne. Twig with fruit ripened 
ew 
Il, ie cremastogyne, ee Tree 80 ft. high, 6 ft. in 
oat of trunk. Tartar City, Chentu. EH. Szechuen, 
700 ft. Aug. 22, 1908. 
III. Cladrasts sinensis, Hemsley. Young ape 25 ft. high, 2 ft. 
in girth of trunk. Foot of Wa-shan. W. Szechuen, 
5600 ft, Sept. 19, 1908. 
We are indebted to Prof. C. S. Sargent for permission to use 
Mr. Wilson’s photographs. 
XXVI—COFFEE DISEASE IN EAST AFRICA. 
The recent recognition i Uganda of the coffee disease caused by 
Hemileia vastatria, Berk r. has necessitated a re-examination of 
the Hemileia material which has reached Kew from time to time 
from Tropical East Africa. Careful comparison of that material 
type specimens of both Hemileia vastatrix an . Woodii, 
-Kalehbr. and Cke., has also been necessary. We are indebted to 
rof. Engler for the loan of herbarium specimens of H, Woodii and 
re species of Coffea for comparison with the material preserved at 
a 
The es intimation that coffee disease was prevalent in Uganda 
_ reached Kew in December of last year when some badly heel 
coffee feaves were received from the Government Entomologist, 
Uganda, but it seems clear from information since received that the 
disease has not suddenly appeared but has been present in the country 
for sometime. In fact, according to a recent report by the Director 
of Agriculture ‘native coffee leaf disease ’ has been well known to 
old residents who were under the impression that H. vastatrix was 
not the fungus in this ca 
The fungus was first recorded for Tropical Africa in 1894 ou 
cultivated coffee received from German Hast Africa. According to 
ebeck,* however, Hemileia vastatriz was found by him on leaves 
of Coffea arabica in a collection of sag 3 made by Weoliet in German 
East Africa in 188 
* Sadebeck : “Die wichtigeren Nutzpflanzen u. deren Erzeugnisse a 
deutsch. Cotonien, a anit z. Jahrb. der Hamb. Wiss. Anst. xiv. 1896, p. 3). 
¢ Hennings Zei fir Trop. Landw. 107, bP 192. 
