Vol. XVI. July, 1891. No. 7. 



THE 



Botanical Gazette 



EDITORS: 



JOHN M. COULTER, University of Indiana, Bloomington, Ind. 



CHARLES R. BARNES, University of Wisconsin, Madison, Wis 



J. C. ARTHUR, Purdue University, Lafayette, Ind. 



CONTENTS: 



Undeserved plants from Guatemala, IX. (With plates XXl-XXIII.)—Jokn Donnell 

 Smith 191 



On certain new or peculiar North America Hvphom vcetes, II. (With plates XIX-XX.)— 



Roland Thaxter ....../ 201 



Notes on North American Mosses.— Charter Reid Barnes . 2 05 



Briefer Articles 208 



Penetration of the hostbv Peronospora 

 gang-hformis: W. H. Rusk. 



Khitorial 209 



The opportunities of the Botanical Cliib, 

 A. A. A. a 



CrRRi. N - T literature 210 



practical Botany.— The new Orav's 

 jvianual — Introduction to thestudvof 



Letters .« • • 2 *° 



The Manchester group of botanists.— 

 Moiiomialism. 



Notes and News • • 217 



Personals. — Errata. — Zoe. — Botanical 

 directories.— A new journal of path- 

 otocrv. —California Botanical Club.— 

 Germs of swiue diseases.— Postage on 

 dried plants. 





[issued July 20.1 



CRAWFORDSVILLE, INDIANA 



PUBLISHED BY THE EDITORS. 



Tracy, Gibbs & Co., Printers, Madison, Wisconsin 



