Classification. 207 



own idea as to its affinity is expressed as follows : 

 ^^ I regard tlie fiingas as one of the UstilagiDeee^ 

 which has become so closely adapted to its life as a 

 parasite in the roots of the Leguminosa3 that it has 

 come to stimulate and tax its host in an exquisitely 

 well-balanced manner, and has lost its needless true 

 resting-spores because the more numerous and tiny 

 sprouting yeast- cells (gemmules) are kept in the cells 

 of the tubercle through the dry summers and autumn, 

 and freed during the rotting in the soil in the winter 

 and spring. Their very minuteness and numbers 

 enable these ^germs' to become as ubiquitous as 

 ^ Bacteria ' or ordinary ^ yeast ' forms, thus explaining* 

 the ubiquity of the tubercles/' ' 



LITERATUEE QUOTED. 



A(j. Syst. Ahj. — Systema Algarum, C. A. Agardli. 

 Alcj. JJniceU. — Algarum Unicellularium, Alex. Braun. 

 Ann, Nat. Hist. — Annals and Magazine of Natural 



History. 

 Ann. Sci. Kat. — Annales des Sciences Naturelles 



(Botanique). 

 B. and Br. Ann. Nat. Hist. — Berkeley and Broome, 



Notices of British Fungi, in Annals and Magazine 



of Natural History (1838—1885). 

 Boitr. zur Biol. — Cohn^s Beitrage znr Biologic. 

 Beitf. Kcnnt. Chytrid. — Beitrage zur Kenntniss der 



Chytridiaceen, Leon Nowakowski, in Cohn's 



Beitr. Biol., 1877, p. 73. 



■ Phil. Trans. Eoj. Soc, vol. 178 (1887), pp. 539-562, pi. 32, 33. 



