Band 128. Nr. 23. XXXVI. Jahrgang. I. Bd. Nr. 23. 



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. Piof. Dr. Wm. Trelease. Dr. J. P. Lotsy. 



und der Redactions-Commissions- Mitglieder : 



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



Prot. Dr. C. Wehmer und Dr C. H. Ostenleid. 



▼on zahlreichen Specialredacteuren in den verschiedenen Ländern. 



Dr. J. P. Lotsy, Chefredacteur. 



No. 23. 



Abonnement für das halbe Jahr 15 Mark 

 durch alle Buchhandlungen und Postanstalten. 



1915. 



Alle fElr die Redaction bestimmten Sendimgen sind zu richten an: 

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



Rosevinge, L. Kolderup Sporeplanterne (Kry ptogamerne). 

 (388 pp. 513 textfig. Kjöbenhavn and Kristiania, Gyldandalske 

 Boghandel Nordisk Forlag. 1913.) 



A carefuUy w^ritten textbook on the Cryptogames answering to 

 Warming's "Tröplan lerne" (Seedplants). The groups of Cryptoga- 

 mes are treated under the following headings (classes) : Thallo- 

 phyta: Bacteria, Cyanophycea, Myxomycetes, Flagellata, Dinoßagel- 

 lata, Diatomeae, Chlorophyceae (containing 4 Orders: Heterokontae, 

 Conjugatae, Isokontae, Charales), Phaeophyceae, Rhodophyceae, Phy- 

 comycetes, Mycomycetes, Fungi imperfecti. Liehen es; Archegoniata: 

 Bryophyta and Pteridophyta. 



The text is excellently illustrated by 513 groups of figures, of 

 vsrhich a few are original, the main part reproduced from other 

 textbooks or from special papers. C. H. Ostenfeld. 



Hoap, C. S., A Comparison of the Stem Anatomy of the 

 Cohort Umhelliflorae. (Ann. of Bot. XXIX. p. 55-63. 2 pl. Jan. 1915.) 



Eight genera of the family Cornaceae were studied. In them the 

 distribution of the parenchyma is diffuse, and the vessels possess 

 scaliform perforations in their end walls. The parenchyma is scarce 

 in exotic genera, but the rays are larger and more abundant than 

 in the N. American species, and ihe vp-ood may show septate tracheids. 



Five genera of the Araliaceae were examined. The parenchyma 

 is vasicentric, and the vessels have usually simple, elliptical pores 

 in their end wall, at a strongly oblique angle to the lateral walls 

 and septate tracheids are common. 



Botan. Centralblatt. Band 128. 1915. 40 



