Band 119. Nr. 14. XXXIII. Jahrgang. I. Bd. Nr. 14. 



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: 



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



und der Redactions-Commissions- Mitglieder : 



Prof. Dr. Wm. Trelease, Dr. R. Pampanini, Prof. Dr. F. W. Oliver, 

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



von zahlreichen Specialredacteuren in den verschiedenen Ländern 



Dr. J. P. Lotsy, Chefredacteur. 



No. H. 



Abonnement für das halbe Jahr 14 Mark 



durch alle Buchhandlungen und Postanstalten. 



1912. 



Alle für die Redaction bestimmten Sendungen sind zu richten an: 

 Redaction des Botanischen Centralblattes, Haarlem (Holland), Spaarnerj. 



Burrell. W. H. and W. G. Clarke. The Fauna and Flora 

 of Flordon common. (Trans. Norfolk and Norwich Nat. Soc. 

 IX. p. 170—186. map. 1911.) 



The authors have examined an area of uncultivated common in 

 Norfolk. There is ample evidence that it has not been cultivated 

 but has been subjected to drainage in recent times, although a 

 considerable proportion of marsh still remains. The marsh soils 

 consist largely of calcareous matter (78 p.c. soluble in HCl) and or- 

 ganic matter (20 p.c. combustible), and from the presence of fresh- 

 water Shells and fruits of Chara it is concluded that the soil is the 

 result of deposition of calcareous matter by aquatic plants. The 

 Vegetation is grouped into: plants of the water, plants of the marsh, 

 and plants of the higher ground, lists of species being given for each. 



W. G. Smith. 



Carter, M. G., A Recon sideration of the Origin of 'Trans- 

 fusion Tissue.' (Ann. Bot. XXV. p. 975—982. 4 textfig. 1911.) 



Cotyledons of Taxus baccata, Cephalotaxus peduncidata, C. 

 Fortunei, Araucaria brasiliensis, Pinus sylvestris, Sequoia sempervi- 

 rens, Sciadopitys verticillata, Cupressus Lawsoniana, C. torulosa, Thuja 

 orientalis, T. spheroidea , and Juniperus communis were investigated 

 to see whether the point of origin of the transfusion tissue supports 

 the hypothesis that it represents modified centripetal xylem. The 

 author concludes that, from the position of the earliest formed trans- 

 fusion tracheids it is improbable that they represent an extension 



Botan. Centralblatt. Band 119. 1912. 22 



