ROYAL BOTANIC GARDENS, KEW. 
BULLETIN 
MISCELLANEOUS INFORMATION. 
IV -REVISION OF THE GENUS HEMILEIA, BERK, 
(With Plate.) 
The discovery of two additional species of Hemihia has 
rendered necessary a redescription of all known species included 
in the genus, which up to the present have been very inadequately 
described in systematic works, the uredo-spore phase alone being 
mentioned. 
It is somewhat remarkable that no attempt appears to have been 
made by those engaged in studying the life-history of Hemihia 
i'<(s//t.<itr<.r. P. ik. and Broome, the cause of the much dreaded 
coffee-leaf disease in Ceylon and elsewhere, to ascertain whether 
or not an Aecidium condition existed ; the presence of both uredo- 
and teleuto-spore stages strongly suggesting the probability of the 
presence of such. 
This probability receives further support from the fact that there 
exist four species of Aecidium as yet not correlated with uredo- or 
teleuto-spore stages, parasitic on the same or closely allied plants 
as those on which the various species of Hemihia are parasitic, 
and also occurring in the same countries as the latter. These 
species are as follows :— 
Aecidium Vanr/ueriae, Cooke, on Vmn/urria infamta, 
Burch, and V. latifolia, Sond,, Xatal. " Often on the same 
plant, sometimes on the same leaves as Hem firm Woodii, 
K. & C." (Cooke, Grevillea, x. p. 124.) 
Aecidium Pavettae, Berk, and Broome, and A. Jlavidum, 
Berk, and Broome, on Pavetta indica, L. ; Ceylon. 
Aecidium Plectroniae, Cooke, on Plectronia Cueinzii, J. M. 
Wood, Natal. 
Should heteroecism be proved to exist in the senus. the fact 
would be of value in any attempt to arrest 
sitic species. 
1375 Wtj89 3/06 D & 
