6% Anatomie. — Biologie. 



•sehen Farne, wobei er die Beziehungen der Blattstruktur zum feuchten 

 und schattigen Standort dieser Pflanzen besonders berücksichtigte. 

 Beschrieben wird die Anatomie der Blätter folgender Arten: 



Hynie)iophylhan Ttinhridgense, Athyrhim ßlix feiniim , A. alpestre, 

 Cystopteris fragilis, C. regia, C. montana, Aspidiuin dryopteris, A. 

 Rohertianiim , A. Phegopteris, A. Thelypteris, A. montaintni, A. Jih'x 

 tnaSj A. rigidem, A. cristatum, A. spiuidosum , A. dilatatian, A. Loii- 

 chitis, A. actdeatitm, Onoclea Struthiopteris, Woodsia ilvensis, W. il- 

 vensis hyperhovea, W. glnbella, Blechuum Spicant, Scolopendrium 

 scolopendrmni, Asplenmn ceterach, A. trichomnmiSj A. viride, A. fo)i- 

 tamim, A. septentvioiiale , A. Selosii, A. fissiini , A. Ruta miiraria , 

 A. gertnaiiician , A. adianhint nigrtirn , Pteridhim aquilinuni , Allo- 

 surus cvispus, Adiantnni capilhis veneris, Notholaena Mavanthae , 

 Polypodinm vulgare, Osmunda regalis, Ophioglos^ttm vidgatuni , O. 

 Lusitaniciim , Botrychimn Lunaria, B. riitaceinn , B. ternatum. 



Freund fHalle a/S.). 



Schütze, W., Zur physiologischen Anatomie einiger tropi- 

 scher Farne, besonders der Baumfarne. (Fünfstücks Beiträge 

 z. wiss. Bot. V. p. 329. 1906.) 



Die Arbeit beschäftigt sich in erster Linie mit der Deutung 

 der Anatomie einer Reihe tropischer Baumfarne nach physiologi- 

 schen Gesichtspunkten. Als Material dienten Stammstücke folgender 

 Cyatheaceen: Alsophila crinita Hook, CyatJiea usanibareusis Hier., C. 

 Inirayana Hook., Alsophila sp., Heniitelia capensis K. Br., Diksouia 

 Sellowiana var. Karsteniana Klotzsch. Ferner würde der Blatterfarn 

 Lygodiuni dichotonunn Sw. und der epiphytische Farn Drynioglos- 

 sutn heterophylliini L. in die Untersuchung einbezogen. 



Freund (Halle a/S.). 



Blatter, E., The Mangrove of the Bombay Presidency and 

 its Biolog V. (Journal of the Bombay natural History Societ}-. 

 Vol. XVI. p" 644—656. Plates A— B. 1904—1906.) 



This is a description of the mangrove-formation as found developed 

 on the coast of the Presidency, and contains much that is alread}' 

 familiär. The stages in the germination of Rhisophora niucronata 

 after detachment from the mother-plant are described. The epicotyl 

 is at first slow-growing, and no leaves appear before the stem with 

 its long internodes reaches the high-water level. The lirst aerial roots 

 appear as soon as the stem branches. A few Statements are also 

 made about pneumatophores and the anatomy of the representatives 

 of the mangrove-formation. F. E. Fritsch. 



Fritsch, F. E., Problems in Aquatic Biology, with special 

 reference to the study of Algal Periodicity. (New Phytologist. 

 Vol. V. NO. 7. July, 1906. p. 149—169. With a table and a chart.) 



The author deals with the salient problems of algal ecology and 

 biology. After emphasising the necessitj^ of periodical Observation 

 the Unit in aquatic Vegetation is discussed. The conclusion is arrived at 

 that aquatic Vegetation is best always regarded as a distinct (as 

 from the surrounding Vegetation) formation, and that a considerable 

 number of such formations will have to be recognised. The reed- 



