Bd. XCIIL No. 12. XXiV. Jahrgang. 



Botaiiisclies Ceiitralblatt. 



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. Goebel. Prof. Dr. F. 0. Bowar. Dr. J. P. Lotsy. 



und der Redactions-Commissions-Mitglieder: 



Prof. Dr. Gh. Ffahault und Dr. Wm. Trelease. 



von zahlreichen Specialredacteuren in den verschiedenen Ländern. 

 Dr. J. P. Lotsy, Chefredacteur. 



jkj ^q Abonnement für das halbe Jahr 14 Mark 



* ! durth alle Buchhandhingen und Postanstalten. 



1903. 



Alle für die Redaction bestimmten Sendungen sind zu richten an Herrn 

 Dr. J. P. LOTSY, Chefredacteur, Leiden (Holland), Gude Rijn 33 a. 



CoüLTER, John Merle and Chamberlasn, Charles Joseph, Mor- 

 phology Ol Angiosperms. (Morphology of Spernia- 

 tophytes.'?^vi2.) New-York [D. Appieton and Co.]. Jul'y 1903. 



X + 348 pp. 



The present voIume is the sequel to one on the Gymno- 

 spenns, published by the authors in 1901, and is conceived in 

 the same spirit. External morphology and systematic matters 

 are passed lightly over, as being suificiently treated in the 

 older text-books. Special attention is given to to the micro- 

 scopic anatomy and cytology of the organs of reproduction. 

 The general anatomy of the vegetative organs is not considered 

 but two chapters are contributed by E. C. Jeffrey on the phy- 

 logeneticaiiy important anatomical features, not only of tiie 

 Angiosperms but of the Gymnosperms as well, The text-book 

 is intended for advanced students and for those engaged in re- 

 search. 



The first chapter is introductory, while the second deals 

 concisely with the general morphology of the flower. The 

 authors emphasize the difficulties connected with the foliar hypo- 

 thesis of the morphology of the essential floral organs, and 

 contend that stamens and carpels should be regarded as organs 

 sui gener is, rather than as modified leaves. The terms 

 androecium and gynoecium as applied to stamens and carpels 

 collectively are condemned on account of their morphologically 

 incorrect im.plication of sexuality. The microsporangium forms 

 the subject of the third chapter, and the authors elucidale the 

 microscopic structure and development of the polien-producing 



Botan. Centralbl. Bd. XCill. 1903, 19 



