151 
This species differs from Tilletia in the mode of spore- 
germination, and must bene rcr return to Neovossia ; Vossia, 
the name originally given by Thümen, being a already ‘used for 
a genus of grasses. Portion of the iy e specimen 
Thümen to Herb. Kew, also the material in the quoted exsiccata, 
examined. 
Figs. 2 and 3, spores of Neovossia Molinia. 
35. Tilletia iius Pat. in Bull. Soc. xd France, iii. muet. im 
t. x., fig. 2.—Spores globose or ovoi p. diam., olive 
warted, unite der a hard blackish green mass, eia. with 
sle nder ne pene with an irregular outline.—Sacc., 
Syll. ix (1891). no. 1179. 
Host.—Attacks the fruit of rice, Oryza sativa, Linn., which 
becomes enlarged, black, and hard like a sclerotium. 
HAB.—Japan ; Environs of Yokosha, Island of Nippon. 
The Id proves that this fungus is not a Tilletia, in fact 
it forms the type of a new genus—U. He no PEDE by 
Brefeld, who cannot indicate its affinities. There are two species, 
U. ze and U. Setarie. Perhaps it would dela bémi wiser not 
to zc established a new genus bier it could have been diagnosed 
er features than spore-germination alone. Every myco- 
ee is deeply indebted to Brefeld dor his marvellous researches 
on spore-germination, but as to whether mycologists have accepted 
the idea that everything systematic rests on this one feature, or 
whether it is really to be regarded as the fundamental and only 
feature of value, remains yet to be decided. 
36. Tilletia sterilis, Ule in Verhandl. bot. Ver. Brandenburg, 
1884, 214 ; Hedwigia, 1886, 114; Sacce., Syll. vii. (1888), no. 1788, 
under s Species minus no ote.” 
Host.—Festuca ovina, Linn. ; Keleria cristata, Pers. 
HaB.—Germany. 
Exsicc.—Rabenh.-Wint., Fung. Eur., 3605 (comm. Ule). 
The different oe of this hypothetical species, as given by 
Sone but lacking satisfactory evidence called the species sterilis, 
bly as a reproach for its sterility. The specimen furnished 
by y Ule to Rabenhorst's exsiecata eo AHi with the jp name, 
and "e so far as the Kew copy is concerned, be described as 
sterilis 
37. Tilletia pte eee Beck in Verhandl. Zool.-Bot. Gesell. 
Wien, 1885, 361.—Spore-mass ochraceous, produced in the ovules ; 
spores globose or rarely subglobose, ochraceous, ee 
14:7-17:5 p diam. ; epispore densely verruculose-aculeate 
3790 B 
