42 P- Sydow: Moose. 14 



bärtigen Sprossen ist offenbar weit verbreitet und von inneren Bedingungen 

 abhängig. 



Bei Unterwasserkulturen des Bryum caespiticium entwickelten sich 

 an den Rhizoiden zahlreiche, sehr auffallende, kugelige Gebilde von ca. y., mm 

 im Durchmesser. In den Rhizoiden hatte sich ein vielleicht zu den Sapro- 

 legniaceen gehöriger Pilz eingenistet. Die RhizoidgaUen sind fast völlig von 

 je einem Sporangium ausgefüllt. 



3. Boucheric, E. Les phenomenes cytologiques de la sporo- 

 genese chez le Barbula muralis. (Compt. rend. Paris, CLVI, 1913, p. 1692 

 bis 1694.) 



Siehe ,, Morphologie der Zelle". 



4. Campbell, D. H. The morphology and systematic position 

 of Calycülaria radiculosa (Steph.). (Dudley Memorial Volume Stanford 

 Univ. Publ., 1913, p. 43-61, fig. 1-12.) 



Nicht gesehen. 



5. Douin, R. Sur les dispositifs de I'absorption de Teau 

 dans le capitule femelle et le disque male des Marchantiees. 

 (Compt. rend. Paris, CLVII, 1913, p. 997-999.) 



Siehe ,, Morphologie der Zelle". 



6. Evans, A. W. and Hooker, H. D. Development of the peri- 

 stome in Ceratodon purpureus. (Bull. Torr. Bot. Club, XL, 1913, p. 97—109.) 



Die Verff. geben folgende Zusammenfassung: 



The original amphithecium, showing eight cells in cross section, divides 

 by periclinal walls into an inner and an outer layer. 



Tlie inner peristomial layer develops from the inner amphithecial 

 layer, imdergoing division by anticlinal walls until it is composed of twenty- 

 four longitudinal rows of cells. 



The oiiter peristomial layer develops from sixteen longitiidiual rows 

 of cells cut off by periclinal walls from the outer amphithecial layer, after 

 its eight rows have been divided by anticlinal walls; the outer peristomial 

 layer undergoes no further divisions by anticlinal walls. 



Ridges of thickening, representing the future teetli, are laid down upon 

 the periclinal walls between the two peristomial layers. 



The cells of the peristomial layers form eight groups, each composed 

 of two rows of cells of the outer layer and three rows of the inner layer. Each 

 group gives rise to two teeth. 



In the Upper part of each group eight deposits of thickening are laid 

 down in four Strands, representing the four branches of the two teeth; in the 

 lower parti only two Strands are formed, representing the basal undivided 

 portions of the teeth. 



In the outer peristomial layer thickenings are deposited alo upon the 

 transverse walls, representing the transverse ridges of the teeth. 



In the undivided basal portion of each tooth a fine median longitudinal 

 line on the inner surface represents the vestiges of the radial walls between 

 two rows of peristomial cells. 



In the basilar membrane the thickening of the waUs in the outer peri- 

 stomial layer is uniform except in case of the outer walls. 



7. FamlUer, J. Moosgallen aus Bayern. (Hedwigia, LIII, 1913, 

 p. 156-160, 7 Abb.) 



