S38 BOTANY. 



3. Physomycetes, including the Mucorini and Saprolegniacece. 



3. Hyplwmyceles, including Peronoaporece, Penicillium, and many 

 imperfect forms. 



4. Goniomyeetea, including Uredinem and Uatilagineoi, and in addi- 

 tion a great number of imperfect stages of Ascomycetes. 



5. Qasteromycetea, as in this book, with the addition of Myxomy- 

 ■ceiea. 



6. Hymenomycetea, as in this book, and including the TremeUini. 



T)e Bary* arranged Fungi under four groups, as follows : 



1. Phycomycetes. 



Saprolegni'icem. Peronoaporem. Mueorini. 



2. Hypodermise. 



Uredinem. Uatilaginem. 



3. Basidiomycetes. 



TremeUini. Mymenomyeetes. Gaateromycetea. 



4. Ascomycetes. 



Protomyeetea. Tuberaeem. Onygenem. Pyrenomyeetes. Dia- 



In both the foregoing arrangements of Fungi the Lichens are omitted, 

 they being regarded as of a different nature. 



(7.) In 1872 Cohn publishedf an outline of a classification of the Cryp- 

 togams in which the old distinctions between Algae, Fungi, and Lich- 

 ens were abandoned. He considered the Thallophytes as constituting 

 a single class, co-ordinate with Bryophyta, Pteridophyta, and Phanero- 

 gamia, and divided it into seven orders, and each of these into many 

 families ; the latter are in most cases equivalent to what are called 

 orders in this book. The families in Roman contain chlorophyll, those 

 In italics are chlorophyll-less. 



Class Thallophyta. 

 ORDER I. SCH,IZOSPORE.S!. 



1. Schizomycetes. 2. Chroococcacese. 3. Oscillatoriacese. 4. Nos- 

 tocacesB. 5. Rivulariacese. 6. Scytonemaceae. 



ORDER II. • ZYGOSPOREiE. 

 1. Diatomacese. 2. Desmidiaceae. 3. Zygnemacese. 4. Mucoracem. 



* In Streinz: " Nomenclator Fungorum," 1861, p. 722, and also in 

 " Morphologic uud Physiologic der Pilze, etc.," 1865, preface, p. 6. 



f Ferdinand Cohn, ' ' Conspectus familiarum cryptogamarum secun- 

 dum methodum naturalum dispositarum," in " Hedwigia," February, 



1872. 



