166 
FETCH : 
longer appendages, and a shorter stalk. They omit all 
reference to the cherry as a host-plant, but include the 
erroneous reference to Akebia. 
In the ‘‘ Uredineæ and Ustilagineæ of Ceylon ” the identity 
of the two species was accepted, and the fungus recorded as 
T. clavellosum. The adoption of the latter name was an error, 
as T. clavellosum of 1857 is nomen nudum, and it is necessary 
to fall back on the description of 1873. According to the 
latter, T. Thwaitesii must be adopted for the Ceylon fungus, 
whether it is the same as the American species or not. We 
thus reach the same conclusion as Sydow, but by a different 
route. 
It would be interesting to ascertain the date of the first 
description, based on American material, of T. clavellosum. 
Apparently it is that by Anderson, in Journal of Mycology, 
VI., p. 124 (1890). Previous descriptions refer to Ceylon 
material, with an American locality attached. 
120. — Æcidium Pavettæ Berk. 
In the Fungi of Ceylon (Jour. Linn. Soc., XIV., p. 95) 
Berkeley and Broome included, under 854, “ Æcidium Pavettæ 
B., Hook. Jour. (1853), p. 231. Maculis orbicularibus h3rpo- 
phyllis nigris tenuibus, pseudoperidiis sparsis, margine angusto. 
On Pavetta indica.'' There is no type specimen of this species 
at Kew or Peradeniya, and, as stated in the Uredineæ and ^ 
Ustilagineæ of Ceylon (Ann. Perad., V., p. 243), it is by no 
means clear from this description that it was an Æcidium, 
more especially in view of the fact that pseudoperidiis 
sparsis, margine angusto ” might be taken to fit the now 
well-known bacterial domatia which occur on Pavetta leaves. 
The description quoted above is the one given in ‘‘Saccardo,” 
but on referring to Hooker’s London Journal of Botany the 
original is found to be somewhat more definite. It is to be 
found in Vol. VI., n. s. (1854), p. 231, not in Vol. V. (1853), 
and runs as follows : — '‘Æcidium Pavettæ n. s. ; maculis 
orbicularibus fuligineis ; peridii marline refiexo lobato ; sporis 
subangulatis. Hab. On the undersides of leaves of Pavetta. 
Ceylon (G. H. K. Thwaites, Esq.). Spots half an inch or 
more broad, dingy ; peridia scattered, more numerous towards 
