Bd. XCV. Nr. 25. XXV. Jahrgang. 



Botanisches Centralblatt. 



Referirendes Organ 



der 



Association Internationale des Botanistes 



für das Gesammtgebiet der Botanik. 



Herausgegeben unter der Leitung 

 des Präsidenten: des Vice-Präsidenten : des Secretärs : 



Prof. Dr. K. Goebei. Prof. Dr. F. 0. Bower. Dr. J. P. Lotsy. 



und der Redactions-Commissions-Mitglieder : 



Prof. Dr. Ch. Flahault und Dr. Wm. Trelease. 



von zahlreichen Specialredacteuren in den verschiedenen Ländern. 

 Dr. J. P. LotSy, Chefredacteur 



No. 25. 



Abonnement für das halbe Jahr 14 Mark 



durch alle Buchhandlungen und Postanstalten. 



1904, 



Alle für die Redaction bestimmten Sendungen sind zu richten an Herrn 

 Dr. J. P. LOTSY, Chefredacteur, Leiden (Holland), Rijn-en Schiekade 113. 



Harriman Alaska Expedition. Vol. V. C r y p t o ga m i c B o t a n y. 



Prepared byj. Cardot, Clara E. Cummings, Alexander 



W. Evans, C. H. Peck, P. A. Saccardo, De Alton 



Saunders, I. Theriot, and William Trelease. New 



York (Doubleday, Page & Co.) 1904. 424 pages', and 44 pl. 



The fifth volume of the Ha rriman A laska E xpe diti on, dealing 

 with the Cryptogamic Botany, forms an attractive volume oi 424 pages, 

 with 44 plates, some of which are handsomely colored, and one text 

 figure. The volume, comprising papers on the Cryptogamic plants of 

 Alaska, has been prepared under the general direction of Mr. Trelease, 

 and comprises the following chapters. 



Introduction. By William Trelease. 



Fungi. By P. A. Saccardo and William Trelease. 



Lichens. By Clara E. Cummings. 



Algae. By De Alton Saunders. 



Mosses. By J. Cardot and L. Theriot. 



Sphagnums. By William Trelease. 



Liverworts. (Hepaticae.) By Alexander W. Evans. 



Ferns and Fern Allies. (Pteridophytes.) By William Trelease. 



A number of the chapters have already been published in the pro- 

 ceedings of the Washington Academy Sciences, as follows: 



The Algae of the expedition appeared as „Papers from the Harri- 

 man Alaska Expedition, XXV. The Algae." (Proceedings of the 

 Washington Academy of Sciences. Vol. III. p. 391 to 4S6. No- 

 vember 15th, 1901.) Mosses of the expedition. „Papers from the Harri- 

 man Alaska Expedition. XXI V." (Proceedings of the Washington 

 Academy of Sciences. Vol. IV. p. 293 to 372. July 31st, 1902.) Hepa- 

 ticae: „Papers from the Harriman Alaska Expedition. V." (Pro- 

 ceedings of the Washington Academy of Sciences. Vol. II. p. 271 — 314. 

 October lOth, 1900.) 



In the introduction, Mr. Trelease explains the Organization of the 

 Botanical corps of the Harriman Expedition and the manner in 



Botan. Centralbl. Bd. XCV. 1904. 42 



