Classification and Nomenc/a.'ure. 49 



99. Dr. Asa Gray, in the fifth edition of his " Botanical Text 

 Book," restricted Acrogkns so as to include only such flowerless 

 plants as contain woody tissue and vessels, while the mosses 

 and liverworts are placed in a separate class, Anophytes. This 

 distinction, however, has been modified in the last edition by 

 dividing the class Acrogens into Cellular and Vascular. 



100. Sachs, in his admirable "Text Book of Botany," classi- 

 fies the vegetable kingdom as follows : 



f Class 1. Alg^. 

 C..«^ I-TK.U.OPHVTES ] c,,,,„. j,(Cof-- Seaweeds.) 



1 (Mildew, Mushrooms, Lichens.) 



Group \\ —CnxK^CK/e. { Class III. Charace^e. (Chara.) 



f Class IV. Hepatic*. 

 Gro«> II — MusciNE.T. I (Liverworts.) 



I Class V. Musci. (Mosses.) 



{ Class VI. FiLiCES. (Ferns.) 

 I Class VII. Equisetace^. 

 I (Horsetails.) 



f-ir. „.„,.„ I Class VIII. Ophioglossace^. 



Group W {if^'L'-f \ (Adder-tongues.) 



t CRVPTOGAMIA | ^^^^^ j^ RhIZOCARPE;E. 



I (Hydropterides.) 



I Class X. LvcopoDiACE^. 



I (Club Mosses.) 



Class XI. GVMNOSPERM.E. 



(Confers, Cycads.) 



Class XII. MONOCOTYLEDON/E. 



(Lilies, Grasses, etc.) 

 Class XIII. Dicotyledons. 



(Roses, etc.) 



The above classification will serve to show the relative posi- 

 tion of ferns in the vegetable world, yet the arrangement of 

 classes under the Vascular Cryptogams seems hardly satisfactory 

 and the nomenclature is at least unfortunate.* 



loi. The following classification of the Vascular Cryptogams 

 or Pteridophyta, may be taken as representing the latest gen- 

 eralizations : 



* The encIiQg, acex, has long been re3erveti for botanical orders, and for the sake of 

 uniformity all groups of plants receiving ordinal ranlc, should receive this termination. 

 Seloffiii^UesB may thus be more properly written Se'AigineWxceie. In a recent text book 

 the old original name Lycopodiacex is changed to Lycopodi&e without obvious reason. 

 Were the term FiJilees not so long established it could with profit be changed so as to 

 conform with the terminations of the other Pteridophyta. A uniform terminology is 

 a desideratum in botanical science. 



Group V — Phanerogamia 



