Band 123. Nr. 18. XXXIV. Jahrgang. II. Bd. Nr. 18. 



Botanisches Centralblatt. 



Referirendes Organ 



der 



Association Internationale des Botanistes 

 für das Gesamtgebiet der Botanik. 



Herausgegeben unter der Leitung 

 des Präsidenten: des Vice-Präside^tten: des Secretärs: 



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



und der Redactions-Conifnissions- Mitglieder : « 



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

 Prof. Dr. C. Wehnier und Dr. C. H. Ostenfeld, 

 von zahlreichen Specialredacteuren in den verschiedenen Ländern. 



Dr. J. P. Lotsy, Chefredacteur. 



No. 43. 



Abonnement 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), Spaarne 17. 



Cunnington, H. M., Anatomy of Enhalus acoroides (Linn. F.), 

 Zoll. (Trans. Linn. Soc. London. 2d Ser. Bot. VIL 16. 1 PI. 13 

 Textfig. Feb. 1912.) 



The author gives a brief description of the habit of the plant. 

 The anatomy of the rhizome is described in detail; the chieffeature 

 of interest lies in the vascular System which consists ofa solid cen- 

 tral core of bundles derived from the midrib and marginal bundles 

 of the leaf, and an outer ring which is composed of the continua- 

 tions of the smaller bundles of the leaf: the root bundles are derived 

 from the central core. 



The account of the leaf structure as given by Sauvageau is 

 summarised and amplified, and a complete description of the origin 

 and development of the aeriferous Chambers and diaphragms, and 

 of the vascular bundles which run in the ends of the trabeculae 

 is given. 



The account of the root described by Svedelius is supple- 

 mented, its structure is typical of a monocotyledonous water plant; 

 the young roots appear to arise in a semi-endogenous manner well 

 out in the cortex of the rhizome. 



A brief account of the external morphology of the male and 

 female inflorescences is given and the anatomy of the bracts enclo- 

 sing the inflorescence is described. The details of the vascular 

 suppl}^ of the inflorescence shew the remarkable similarity in plan 

 of the two kinds. Alterations in structure of the female peduncle 

 occur subsequent to fertilisation, which cause it to coil upinto a spiral. 



The paper concludt-S with some details of the anatomy and mor- 

 phology of the flower, fruit, seed and seedling. E. de Fraine. 



Boran. Centralblatt. Band 123. 1913 29 



