674 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Parish, S. B. — Additions to the Californian Fern flora. 



Fern Bull, xii. (1904) pp. 82, 83. 



Price, Sadie F. — Contribution toward the Fern flora of Kentucky. 



[An annotated list of 42 ferus, published after the writer's death.] 



Tom. cit., pp. 65-70. 



Prince, S. Fred. — Some ferns of the cave region of Stone County, Missouri. 



[A list of 17 species and 4 varieties from the remarkably eroded southern 

 side of the Ozark Range.] Tom. cit., pp. 72-7. 



Scott, D. H. — On the occurrence of Sigillariopsis in the lower coal-Measures of 

 Britain. Ann. Bot., xviii. (1904) pp. 519-21. 



Bryophyta. 



Monoclea.* — D. S. Johnson discusses the development and relation- 

 ship of Monoclea, founded on a study of material from Jamaica. In an 

 historical resume he gives a clear account of the observations of previous 

 authors, and their views as to the systematic position of the genus — at 

 first near Anthoceros, then near PelUa, and then in the Marchantiacese. 

 He also describes his own researches, and draws a series of conclusions 

 from them. The male receptacle resembles that of Gorsuiia and Fim- 

 briaria rather than that of Fegatella. The development and structure 

 of the antheridia are clearly Marchantiaceous. The archegonia are 

 Marchantiaceous in development and structure, and not Jungerman- 

 niaceous. The long-stalked sporogonium with cylindric capsule is more 

 of a difficulty ; but the monostromatic capsular wall is Marchantiaceous, 

 not Jungermanniaceous. The presence and direction of the two kinds of 

 rhizoids is a thalline character of the Marchantiaceae, among the lower 

 members of which order the author places the genus. 



Revision of Lophozia.t— V. Schiffner has made a careful study of 

 Lophozia Muelleri and its allies, examining very many specimens. This 

 group of species is well marked off from the rest of the genus by the fol- 

 lowing characters : (1) leaves always two-lobed ; (2) amphigastria mostly 

 well developed even on the sterile stem ; (3) involucral bracts subsimilar 

 to the leaves ; (4) perianth cylindric or conical, not plicate (or only at the 

 apex), contracted into a tubular apiculus ; (5) perigonial bracts, always 

 with a third dorsal tooth. The author gives a chronological list of 19 

 species which have been described in this group, and, criticising them in 

 detail, reduces them to 7 species : L. MwUeri, Hornschuchiana, badensis, 

 turbiiiata, heterocarpa, Schultzii, Kaurini. As an appendix he adds a 

 long list of the original specimens and specimens in published sets, which 

 he has examined critically, giving them their corrected names. 



Dispersal of Moss-spores.J — A. Pfaehler publishes a biological and 

 morphological study of the dissemination of the spores of mosses. After 

 describing the general structure of the sporogonium, he sums up pre- 

 vious work, mainly that of Hutton (1874), who held the wind to be the 

 prime agent in spore-dispersal in proportion to the length of the fruit- 

 stalk, and the peristome to be an apparatus which prevents too rapid 



* Bot. Gazette, xxxviii. (1904) pp. 185-205 (2 pis.). 



t Verh. k. Zool. Bot. Ges. Wien, liv. (1904) pp. 381-405. 



% Bull. Soc. Vaudoise, xl. (1904) pp. 41-132 (9 pis.). 



