Band 105. Nr. 7. XXVIII. Jahrgang. IL Bd. Nr. 7. 



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. R. v. Wettstein. Prof. Dr. Ch. Flahault. Dr. J. P. Lotsy. 



und der Redactions-Commissions- Mitglieder : 



Prof. Dr. Wm. Trelease und Dr. R. Pampanini. 



von zahlreichen Specialredacteuren in den verschiedenen Ländern. 



Dr. J. P. Lotsy, Chefredacteur. 



No. 33. 



Abonnement für das halbe Jahr 14 Mark 

 durch alle Buchhandlungen und Postanstalten. 



1907. 



Alle für die Redaction bestimmten Sendungen sind zu richten an Herrn 

 Dr. J. P. LOTSY, Chefredacteur, Leiden (Holland), Witte Singel 26. 



Holm, Theo, The anatomical method. (American Journ. of 

 Pharmacy. LXXIX. p. 56—60. Febry. 1907.) 



A brief discussion of the history of the anatomical method and 

 its great value to systematic and anatomical botany. Already 

 Linnaeus spoke of „formae et structurae"; De CandoUe and 

 Endlicher separated the Monocotyledones from the Dicotyledones by 

 means of their structure; Martius pointed out the peculiar structure 

 of wood in Coniferae : Mirbel wrote an anatomical treatise of the 

 Labiatae ; followed soon by Chatin, Regnault, Duval-Jouve and 

 others. The most important contributions, however, were given by 

 Radlkofer and Vesque, besides the more recent work of 

 Solerede r. Some examples are mentioned as to the application of 

 this method in Raniincidaceae and Conipositae. Theo Holm. 



Holm, Theo, The internal structure of the stem and leaf of 

 Riiellia ciliosa Pursh, Phlox ovata L. and Spigelia Marilan- 

 dica L. (American Journ. of Pharmacy. LXXIX. p. 51—55. plates 

 1—2. Febry. 1907.) 



The anatomy of the stem is very distinct in thcse plants, and 

 the following characters may be mentioned. In Ruellia the stem is 

 quadrangular and contains cystolithes; in Phlox it is cylindric and 

 destitute of crystals, while in Spigelia the stem is fourwinged. The 

 mestome-strands are bicollateral in Spigelia, but simply collateral in 

 the others. The leaves are bifacial in these plants in regard to the 

 distribution of stomata as well as to the differentiation of the chlo- 



Botan. Centralblatt. Band 105. 1907. 11 



