342 TEXT-BOOK OF FUNGI 



Clinton, ' Mon. N. American Ustilagineae,' Proc. Bosto?i 

 Soc. Nat, Hist., 39, p. 320 (1904). 



Engler and Prantl, Hemibasidii [ Ustilagineae and Tille- 

 tieae~\, i, pt. i** (1900). 



Holway, 'N. American Uredineae' (1905). 



Massee, 'Ustilagineae (British),' Brit. Fungi (1895). 



Massee, * A Revision of the Genus Tilletia? Kew Bull. 

 1899, p. 141. 



Massee, ' Spore Variation in the Genus Triphragmium, 

 etc.,' Grevillea. 21, p. 113. 



M 'Alpine, ' A New Genus of Uredineae UromycladiumJ 

 Ann. Mycol., 3, p. 303 (1905). 



Moller, ' Protobasidiomyceten,' Bot. Mittheil. aus den 

 Tropen, A. W. Schimper, 8, Heft (1895). 



Plowright, Mon. Brit. Uredineae and Ustilagineae, 

 London (1889). 



Saccardo, Uredineae and Ustilagineae, 7, pt. 2 (1888). 



Sydow, Monographia Uredinearum (1894). 



BASIDIOMYCETES 



The enormous assemblage of species included in the 

 present group possess only one common morphological 

 bond of union, namely, the basidium on which the spores 

 are borne. A basidium consists of a comparatively large, 

 usually more or less clavate cell, from the free apex of 

 which spring four, less frequently two, slender outgrowths or 

 sterigmata; each sterigma bears a spore. In the Dacryomy- 

 cetaceae the spores are generally septate, elsewhere through- 

 out the entire group the spores are one-celled. No trace 

 of sexual reproduction is known unless Dangeard's view is 

 accepted. 



