CLASSIFICATION OF THALLOPHYTES. 



337 



OOPHYTA. 



Volvox, etc. 

 (Bdogonib^. 



CoiLOBLASTBiE. 

 FtJCACB^. 



Coleoclieete. 

 Flokidbje. 



j Peronosporem. 



CARPOPHYTA. 



.ASCOMTCETEB. 



UredinecB (V). 

 ITstilaginem (?). 



. BASIBIOMYCMTEa. 



Chahacb^. 



It will be instructive to compare the foregoing witli otlier attempts 

 at an arrangement of tlie Tballopliytes. 



(5.) Tbe arrangement which has long been followed, and which is 

 Btill in use in most English books, is that which divides the Thallo- 

 phytes (considered a class) into three orders,* viz., 



1. Algm, aquatic and chlorophyll-bearing. 



2. Fungi, terrestrial, and destitute of chlorophyll. 



3. Lichenes, terrestrial, and containing green gonidia. 

 Berkeley's arrangement-]- differs from this only in the relative rank of 



the groups. 

 Alliance I. Al gales (Algm). 



Alliance II. Mycetales i fjingales (^«^j). 



•' \ Lichenales (L/ichenes). 



Algae have usually been divided into three groups (sometimes called 



sub-orders), as follows : 



1. Chlorospermece, incladiog all the chlorophyll -bearing plants of the 

 Protophyta and Zygophyta, and all the Oophyta, excepting FucacecB. 



2. Shodospermece, nearly equivalent to the Floridem. 



3. MelanospermecB, including the Fucaeem, PJiaosporecB, and some 

 other plants. 



(6.) Fungi are still arranged in most English books in six groups 

 (called orders, sub-orders, or even families), as follows 4 

 1. Ascomycetes, nearly as in this book. 



* See Hooker's " Synopsis of <the Classes, Sub-classes, Cohorts, and 

 Orders,'' in the English edition of Le Maout and Decaisne's " General 

 System of Botany," 1873, p. 1038. 



f " Introduction to Cryptogamic Botany," 1857, p. 81. 



X See Berkeley's" Introduction," already cited ; Berkeley's "Outlines 

 of British Fungology," 1860; Cooke's " Hand-book of British Fungi," 

 1871; Cooke and Berkeley's "Fungi, their Nature, Influence, and 

 Uses," 1874; and Fries' " Systema Mycologicum," 1821. 



