Bryophyten. — Pteridophyten. 629 



geneigt, Peristom niedrig, Sporen kleiner als bei F. pallescens)\ 

 Mniobryuni latifolium n. sp. (verhält sich zn Mn. albicans xsiv.glaciale 

 ähnlich wie etwa Bryum latifolium zu B. Schleicheri oder B. ovatum 

 zu B. Neodaniense)\ B. syriacum Lorentz n. var. humilis (nur 1 cm 

 hoch, gelb; Diagnose des Typus scharf ausgearbeitet); Fontinalis 

 mesopotanica n. sp. (sect. Malacophyllae Card., robuste Gestalt ab- 

 stehende nicht so weiche schlaffe Blätter); Amblystegiurn Kurdicu>n 

 n. sp. (dem A. KoehniiBr. eur. nahe stehend, aber Blattecken schmal 

 herablaufend, Perichaetialblatter stark gerippt); Riccia Frostii Aust. 

 n. var. tnajor und n. var. crystallinoides (letztere vielleicht Schatten- 

 form zu erstgenannter Varietät; R. Beckeriana Steph. ist sicher 

 mit R. Frostii identisch). 



Pottia miitica Vent. und P. cornmutata Spr. waren bisher aus 

 Asien nicht bekannt. Interessante Notizen über Synonymik, Ver- 

 wandtschaft und Verbreitung namentlich bei den Genera Bryum, 

 Funaria, Pottia, Tortula und Grimmia. Die Figuren bringen die 

 neuen Formen in Details, oft verglichen mit den Details der nächst- 

 verwandten. Matouschek (Wien.) 



Watson, W., Xeroph^'tic adaptations of Br^^ophytes in 

 relation to habitat (The New Phytologist. XIII. p. 149—169, 

 181 — 189. figs. London, 1914.) 



The author has studied this question for some years. He treats 

 it under the following headings: I) Introduction. II) Protective Ar- 

 rangements in the Sporogonium: 1) Immersion ofCapsule; 2) Length 

 of Seta; 3) Curvature of Seta; 4) Papillosity; 5) Bell-shaped Calyptra; 

 6) Hairy Character of Calyptra; 7) Position of Stomata; 8) Plication 

 of Capsule; 9) Fleshy or Bulbous Involucre. III) Protective Arrange- 

 ments in the Gametophyte: A) Reduction of water-output: 1) Cushion- 

 forming Habit; 2) Investments of dead or non-chlorophyllous Cells; 

 3) Shape of Leaf or Thallus; 4) Size of Leaf-cells; 5) Thickenings 

 of Leaf-cells; 6) Stem Structure; 7) Arrangement of Leaves on Stem; 

 8) Capillary Stractures; 9) Vegetative Methods of Reproduction. B) 

 Water-storage Methods: 1) Water-Sacs; 2) Water-storing Cells; 3) 

 Mucilaginous Cells; 4) Hypogaeal Tubers, etc.; 5) Succulent Tissue. 

 In conclusion he says that some xerophytic adaptations found in 

 Bryophytes occur also in vascular plants, but many are peculiar to 

 the group. Many plants mentioned as exhibiting "xerophytic" devi- 

 ces are not really xerophytes; but the devices simply enable the 

 plant to live under less moist conditions than would otherwise be 

 possible. A. Gepp. 



Bo"wer, F. O., Studies in the Phy logen v of the Filicales. 

 IV. Blechnum and Allied Genera. (Ann. Bot. XXVIII. p. 363— 

 432. PI. 22—32. 26 Figs. July, 1914.) 



The author has investigated the following Blechnoid Ferns: 

 Plagiogyria, Matteucia intermedia, C Christ., 15 species of Blechnum, 

 12 of the subgenus Lomaria, 2 of the subgenus Eu-Blechnum, and 

 one of the subgenus Salpichlaena , one species of Sadleria and Brai- 

 nea, Stenochlaena sorbijfolia (L.) J. Smith, and species of Scolopen- 

 drium, Asplenium, Doodia and Woodwardia. 



Plagiogyria seems to be a rather primitive type isolated from 

 the rest of these Blechnoid types. A relationship was early recogni- 

 sed by Wildenow and other writers between the Cyatheoid Onoclea 

 and Struthiopteris on the one hand and Blechnian on the other. 



