Manchester Memoirs, / W. Ivii. (191 3), No. 8- 



VIII. The Structure and Life History of Leptosphceria 

 Lemanecv (Cohn). 



By William B. Brierley, M.Sc, 



Assistant Lecturer in Economic Botany and Demonstrator in Botany 

 in the Unii'ersity of Mauchester. 



[Read Febrnary 4th, igiS- Received for Publication 

 February rjth, rgrj.) 



History. 



Leptosphceria Lemanecv (Cohii), a Pyrenomycete in- 

 habiting sexual shoots of Lemanea fluviatilis was 

 discovered by Wartmann (17) in 1854. 



In 1856 Montagne (ll) published his Sylloge Crj'pto- 

 gamarum, but from this the fungus was omitted. 



Cohn (4) in 1857 briefly described it under the name 

 Sphceria LemanecE, and stated it to be peculiar to its algal 

 host. He again referred to it two \ears later. 



Beketoff(2) mentioned it in 1862, but it was only with 

 the publication of Woronin's (7) investigations in 1870 

 that knowledge of its structure and life-history became 

 known. 



In 1887 De Bary (8) questioned Woronin's interpre- 

 tation of the reproductive structures of this fungus. 



In the same year Rabenhorst's (13) Cryptogamen 

 Flora, Filze Abt. H., appeared, and in this Sphceria 

 LemanecB was placed in the genus Leptosphceria, following 

 Saccardo (14). Lindau (10) retained it in this position in 

 Die Natiirlichen Pflanzenfamilien of 1897. 



In 1901 Lemmermann (9) published a compilation of 

 fungi parasitic or saprophytic upon Algae, but from this 

 LeptospJiceria Levianecr. was omitted. 



June jotk, igij. 



