Band 129. Nr. 16. XXXVI. Jahrgang. II. Bd. Nr. 16. 



Botanisches Centralblatt. 



Referirendes Organ 



der 



Association Internationale des Botanistes 

 für das Gesamtgebiet der Botanik. 



Herausgegeben unter der Leitung 

 des Präsidenten: des Vice -Präsidenten: des Secretärs: 



Dr. D. H. Scott. Prof. Dr. Wm. Trelease. Dr. J. P. Lotsy. 



und der Redactions-Commissions- Mitglieder : 



Prof. Dr. Wm. Trelease, Dr. C. Bonaventura, A. D. Gotton, 



Prof. Dr. C. Wehmer und Dr. C. H. Ostenfeld. 



von zahlreichen Specialredacteuren in den verschiedenen Ländern. 



Dr. J. P. Lotsy, Chefredacteur. 



No. 42. 



Abonnement für das halbe Jahr 15 Mark 



durch alle Buchhandlungen und Postanstalten. 



1915. 



Alle für die Redaction bestimmten Sendimgen sind zu richten an: 

 Redaction des Botanischen Centralblattes, Haarlem (Holland), Spaarne 17. 



Boodle, L. A., Abnormal Phyllotaxy in the Ash. (Ann. Bot. 

 XXIX. p. 307, 308. April 1915.) 



A description and anatomical study of a shoot of Fraxinus 

 excelsior, in which one leaf belonging to a decussating pair was 

 entirely suppressed. Other abnormalities occurring in the Ash are 

 mentioned. Agnes Arber (Cambridge). 



Salisbury, E. J., On the Occurrence of the Vegetative 

 Propagation in Drosera. (Ann. Bot. XXIX. p. 308—310. 1 text- 

 fig. April 1915.) 



The author describes the occurrence of vegetative reproduction 

 by budding in Drosera rotundifolia L. and D. intermedia Hayne. 

 Young plants arose by budding from the old leaves, which even- 

 tually became detached from the parent by decay of the petioles. 

 Near the point of budding there is a considerable development of 

 starch in the parent leaf. This fact, and the detachment of the 

 budding leaves, is regarded by the author as suggesting' a definite 

 reproductive mechanism. Agnes Arber (Cambridge). 



Sargant, E. and A. Arber. The Comparative Morphology 

 of the Embryo and Seedling in the Gramineae. (Ann. 

 Bot. p. 161—222. 2 pl. 35 text-figs. April 1915.) 



The evidence brought forward in this paper consists ofastud}^ 

 of the comparative anatomy of the seedlings of a number of diffe- 

 rent genera of Grasses, and of certain selected species, from among 



Botan. Centralblatt. Band 129. 1915 26 



