CLASSIFICATION OF THALLOPHYTES. 337 



OOSPORE.E. 



Volvox, etc. 

 CEDOGONIE.E. 



CARPOSPORE^E. 

 Coleochaete. 

 FLORIDE^E. 



.................................... ASCOXYCBTES. 



Uredinecs (?). 

 UstilaginecB (?). 



...................................... BA.8IDIOMYCETE8. 



CHAKACKiE. 



It will be instructive to compare the foregoing with other attempts 

 at an arrangement of the Thallophytes. 



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

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

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



1. Algae, aquatic and chlorophyll-bearing. 



2. Fungi, terrestrial, and destitute of chlorophyll. 



3. Lichenes, terrestrial, and containing green gonidia. 

 Berkeley's arrangementf differs from this only in the relative rank of 



the groups. 

 Alliance I. Algales (Alga). 



Amaucell. M^cetale, 



Algae have usually been divided into three groups (sometimes called 

 sub-orders), as follows : 



1. Chloi'ospermea, including all the chlorophyll -bearing plants of the 

 Protophyta and Zygosporeae, and all the Oosporeae, excepting Fucacece. 



2. Rhodospermece, nearly equivalent to the Floridece. 



3. Melanospermece, including the Fucacece, Phaospore, 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," 1872, p. 1023. 



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



J 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. 



