Band 123. Nr. 4. • XXXIV. Jahrgang. II. Bd. Nr. 4. 



Botanisclies Centralblatt 



Referirendes Organ 



der 



Association Internationale des Botanistes 



für das Gesamtgebiet der Botanik. 



Herausgegeben unter der Leitung 



des Präsidenten: des Vice- Präsidenten : des Secretärs: 



Prof. Dr. E. Warming. Prof. Dr. F. W. Oliver. Dr. J. P. Lotiy. 



und der Redactions-Commissions- Mitglieder : 



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



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



Ton zahlreichen Specialredacteuren in den verschiedenen Ländern. 



Dr. J. P. Lotsy, Chefredacteur. 



No. 29, 



Abonaement für das halbe Jahr 14 Mark 

 durch alle Buchhandlungen und Postanstalten. 



1913. 



Alle für die Redaction bestimmten Sendungen sind zu richten an: 

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



Adkinson, J., Some features of the Anatomy of the Vita- 

 ceae. (Ann. Bot. XXVII. p. 133—139. 1 Plate. Jan. 1913.) 



The author investigated the medullary rays in the wood of 

 Vitis (11 species), Cissus (3 species), Ampelopsis Veite hii and Leea. 



It is concluded that the ancestors of the Vitaceae were non- 

 climbing, wood}'' perennials, in the wood of which both multiseriate 

 and linear rays occurred. The linear rays have disappeared from 

 mature normal wood in Vitis, except in V. californica, Benth., but 

 vestiges still persist in the seedling stages in other Vitoideae and 

 may reappear on wounding. 



The facts recorded add support to the new theory of the origin 

 of the herbaceous habit in plants. E. de Fraine. 



Thomson. R. B., On the Comparative Anatomy and Affi- 

 nities of the Araucarineae. (Proc. Roy. Soc. Ser. B, 86. p. 71— 72. 

 1913.) 



From a study of the anatomy of the different regions of the 

 plant, evidence is found which the author regards as in every 

 respect confirming the old view that the Araucarineae are anatomi- 

 callv very closely associated with the Cordaitales. 



The presence of a leaf-gap opposite the outgoing foliar trace is 

 taken as indicating Pteropsid ancestry, and as precluding the pos- 

 sibility of the Lycopsid connection of the Araucnrineae. 



Other points studied are the pitting of the tracheids, the medul- 



Boran. Centralblatt. Band 123. 1'.)13. 6 



