WORKS OF REFERENCE. XVII 



Eichler, Bluthendiagramme. Engelmann, Leipzig, 1875. 



Engler und Frantl, Die naturlichen Pflanzenfamilien. Engelmann, 



Leipzig. 



All of these are of great value, especially the rather expensive 



work of Engler and Prantl, now in course of publication. 



FLORAS. 



Gray, Manual of Botany (sixth edition). Ivison, Blakeman & Co., 

 New York. 



Chapman, Flora of the Southern United States (second edition). Ivi- 

 son, Blakeman & Co., 1883. 



Coulter, Manual of the Botany of the Rocky Mountain Region. Ivison, 

 Blakeman & Co., 1885. 



Coulter, Manual of the Phanerogams and Pteridophytes of Western 

 Texas. U. S. Dept. Agric., 1892. 



Gray, Synoptical Flora of North America. (In progress.) 



Gray's Manual is commonly bound with the " Lessons " in one 

 volume, but may be had separate in convenient form for the 

 pocket. Dr. Gray's final revision of the "Lessons" has been pub- 

 lished under the title, Elements of Botany. Ivison, Blakeman & 

 Co., 1887. 



CRYPTOGAMIC BOTANY. 



Eaton, Ferns of North America. Cassino, Boston, 1879. 



Lesquereux and James, Mosses of North America. Cassino, Boston, 



1884. 

 Farlow, Marine Algce of New England. U. S. Fish Commission, 



Washington, 1881. 



Tuckerman, North American Lichens. Cassino, Boston, 1882. 

 DeBary, Comparative Morphology and Biology of the Fungi, Mycetozoa, 



and Bacteria. Oxford, Clarendon Press, 1887. 



v. Tavel, Vergleichende Morphologie der Pilze. Fischer, Jena, 1892. 

 Bennett and Murray, Handbook of Cryptogamic Botany. Longmans, 



Green & Co., London and New York, 1889. 

 Plowright, British Uredinece and Ustilaginece. Kegan Paul, Trench & 



Co., London, 1889. 

 Underwood, Our Native Ferns and their Allies. Bloomington, 111., 



1882. 



