CONTENTS. 



XV 



LXXIII. Occurrence of known or supposed members of the development of 

 some species outside the normal connection. Tendency of these to 

 constantly similar production. Hence a possible reduction or 

 splitting of a species . . . . . . . . .251 



LXXIV. Determination of organs of propagation which have been considered to 



be rudimentary 255 



Literature of sections LIX LXXIV 261 



DOUBTFUL ASCOMYCETES. 



LXXV. Introduction. Helicosporangium. Papulaspora. Laboulbenieae . 263 



LXXVI. Exoascus 265 



LXXVII. Saccharomyces i . . . 267 



LXXVIII. Affinity between Exoascus and Saccharomyces. Possible relations 



of the latter group to the Ascomycetes ...>.. 269 



Confusion between the ' Yeast-plants ' 270 



Literature . . . . . . . .-.'. . 272 



Uredineae. 



LXXIX. Aecidia- forming and Tremelloid Uredineae. Sporocarps (aecidia) 

 and spermogonia of the aecidia-forming species. Course of de- 

 velopment of Endophyllum 274 



Aecidia-forming Uredineae with gonidia : teleutopores, uredo . . 279 



Uredineae with imperfectly known course of development . . 282 



Tremelloid Uredineae 283 



Relationship between Uredineae and Ascomycetes .... 285 



Literature 285 



LXXX. 



LXXXI. 



LXXXII. 



LXXXI 1 1. 



Basidiomycetes. 



LXXXIV. Introduction 



HYMENOMYCETES. 



LXXXV. Conformation of unveiled sporophore 

 LXXXVI. Veiled sporophore. Velum. Annulus. Volva 

 LXXXVII. Structure of full-grown sporophore . - . . 

 LXXXVI II. Hymenium. Cystidia. Basidia . . * 



LXXX IX. 

 XC. 



XCI. 



XCII. 

 XCIII. 

 XCIV. 



GASTROMYCETES. 



Comparative account of the differentiation of the sporophore . 

 Special morphology, history of development and anatomy of the 



same 



COURSE OF DEVELOPMENT AND AFFINITIES OF BASIDIOMYCETES. 



Course of development of perfectly known form. Exobasidium, 

 Tremellineae, Typhula, Coprinus, Agaricus melleus, Crucibulum 

 and Cyathus, Sphaerobolus 



Gonidia of Basidiomycetes which have been thoroughly examined . 



Imperfectly known and doubtful gonidia 



Homologies and affinities of Basidiomycetes 



286 



287 

 289 

 297 

 300 



308 

 312 



328 

 331 

 333 



337 



Literature . ' 341 



