58 



Tulasne transferred the species to the genus Melanospora and 

 published a complete series of figures.* The next record of the 

 occurrence of this fungus is by Plowright f who records it upon 

 hariafarmosa in England. He redescribes and refigures the 

 species. Aside from the arrangement of the spores in the ascus 

 the two accounts are essentially the same. Saccardo \ questions 

 the correctness of this disposition of species and suggests that it 

 probably belongs to Ceratostovia on account of its light-colored 

 perithecium. 



The first mention of the species from America is by Ellis and 

 Everhart § who described it as Ceratostoma biparasitianii from 

 material sent from Ohio by C. G. Lloyd. The material collected 

 this season agrees with the description and the type specimen of 

 the American species and equally well with the description of the 

 European. The only points of difference are such as would 

 be expected from two observers working on two continents 

 independently of each other. The European species is described 

 as having hyphae about 3.5/^ in diameter, spores 5-6// x 2.5 /.« 

 and perithecia about 20011 in diameter with a beak about 

 40-50// X 1000—2000// while the American species has hyphae 

 about I I J., spores 6-7// x 1.5/^ and perithecia 80—100// with 

 a beak 30-40// x 1000 //. The brothers Tulasne had abun- 

 dant material from which to describe their species as they not 

 only collected it in its native haunts but cultivated it in the 

 laboratory, while the type in the Ellis herbarium consists of a 

 single plant of Isaria parasitized only at the base and containing 

 at most a small number of perithecia. In a series of some half 

 dozen or more infested plants of Isaria it is not difficult to find 

 all regions of the host parasitized and perithecia with a consider- 

 able range in size. The American material is somewhat smaller 

 than the European but otherwise the same. The perithecia are 

 usually intermediate in diameter between the measurements given 

 in the two descriptions and range from 1 000 to 1500/^ in height. 



* Sel. Carp. Fung. 3: 10. pi- J./. 11-14. 1865. 



fGrevillea 10 : 71. //. ij8. f. 3. 1881. 



X Syll. Fung. 2 : 464. 1883. 



I Bull. Torrey Club 24 : 127. 1897. 



