608 SUMMAKY OF CURRENT RESEARCHES RELATING TO 



tetrasporangial conceptacles, the discussion in the present paper is 

 confined largely to the consideration of some points in connection with 

 the structure of these conceptacles. 



Marine Algae of Denmark.* — L. K. Rosenvinge publishes the first 

 instalment of his exhaustive and important work on the marine algae 

 of Denmark. It is based on collections of his own begun in 1890, 

 on collections sent to him by other people, and on those preserved in 

 herbaria. The Danish waters have been most carefully examined and 

 worked as far east as the boundary of the region investigated by 

 Reinke, and details are given in the introduction concerning the con- 

 ditions of depth, the nature of the bottom, and the salinity and tempera- 

 ture of the sea water in the many parts of the much broken coast line. 

 The author undertook a good deal of dredging, and devotes a chapter to 

 remarks on the dredging localities. This is followed by a list of stations 

 arranged according to the different waters, with notes as to the depth of 

 water and an indication of the most common and predominant species. 

 In the present part of the work the author treats only of the Bangiales 

 and Nemalionales. In addition to giving the distribution of each 

 species in Denmark, each record is followed by critical notes which 

 embody interesting personal observations on the manner of growth, the 

 development, life-history, and structure, and the views of other authors. 

 The following new genera are described: — Porphyropsis ( = Porphyra 

 coccinea J. Ag.) ; Erythrocladia (an ally of Erythrotrichia), containing 

 two new species ; Kylinia (somewhat resembling Chantransia), with one 

 species. The genus Chantransia contains 24 species, of which 16 are 

 new ; and the notes are so complete, and deal so fully with the life- 

 history and the systematic position of each species, that the treatment of 

 the genus constitutes a monograph in itself. A key to the species of 

 Chantransia is given, and they are divided under two subgenera, The 

 author has discovered tetrasporangia in five species over and above what 

 was already known, and his notes on the reproductive organs are ex- 

 tremely interesting. Some of the species are partly endophytic. The 

 whole work is well illustrated, and charts are given of the Danish waters, 

 with curves of depths and dredging places. 



New Zealand Marine Algaa.t — A. D. Cotton publishes some in- 

 teresting notes on nine species of New Zealand alga3 in the Kew 

 Herbarium. They are : Myrionema strangulans Grev., Leathesia dif- 

 formis Aresch., Petrospoagium Berkeleyi Naeg., Dictyota ocellata J. Ag., 

 Callophyllis H(»nbronianal\.utz.,Chrysymenia asperata Cotton (= Callo- 

 phyllis asperata Harv. and Chrysymenia (?) apiculifera J. Ag.,) Nito- 

 phyllum variolosum Harv., N. uncinatum J. Ag., and Aphanocladia deli- 

 catula Falkenb. 



Algse of the Tatra Mountains.}— R. Gutwinski publishes a com- 

 plete flora of the Tatra Mountains, in which he records 827 species and 

 varieties. The first part of the paper is devoted to (1) a consideration 

 of the geographical position of the region and its geological composition ; 



* Kgl. Danske Vidensk. Skrifter, ser. vii., 7 (1909) I., 151 pp. (2 charts, 2 pis., 

 and figs, in text). t Kew Bulletin, 1909, pp. 239-43. 



X Bull. Internat. Acad. Sci. Cracovie, 1909, pp. 415-560. 



