ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 69 



production of synoicous flowers. These latter, however, are always 

 accompanied in a predominant proportion by flowers which, by a latent 

 influence, manifest only male polarity, or very rarely by flowers of female 

 character. 4. The gonophytes which produce these male or female 

 flowers are, nevertheless, also virtually bisexual, this bisexuality 

 revealing itself immediately in the products of regeneration when 

 syncecism reappears. 5. The protonema arising by regeneration of 

 the sporogonium consequently gives birth among species, however 

 strictly dioicous, to a new form, hermaphrodite, or more exactly, 

 androgyno-synoicous, capable of reproducing itself indefinitely in an 

 asexual manner. 



Classification of Families and Genera of Mosses.* — V. F. Brotherus 

 publishes a further contribution to the section Musci in Engler and 

 Prantl's " Die natiiiiichen Pflanzenfamilien." He finishes the family 

 Hookeriacege and treats of the Hypopterygiacese (with three genera), 

 Helicopkyllaceee (two genera), Rhacopilaceee (one genus), Leskeaceee 

 (twenty-three genera arranged in five groups). A large portion of the 

 group Thuidieas stands over for completion in the next part of the 

 work. 



European Hepaticse.t — K. Mueller, of Freiburg, publishes the fifth 

 part of his monograph of the European Hepatic* in Rabenhorst's 

 Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz, 

 and gives full descriptions of the following genera of Marchantiacese 

 with their species : Reboidia, Grimaldia, Neesiella, Firnbriaria, Fegatella, 

 Lunularia, Exormotheca. Dumortiera, Bucegia, Freissia, Marcliantia. 

 Passing on to the second great division of hepatics — Jungermanniales, 

 he begins the consideration of the section Jungermanniaceee Anakro- 

 gynas by describing Sphwrocarpus and Riella. 



Mossflora of Northumberland.! — H. N. Dixon publishes a list of 

 the mosses he collected in Northumberland in the summer of 1905, and 

 of the species recorded by other bryologists, indicating the probable 

 inaccuracy of some of these records. 



French Mosses. § — P. Sebille gives a list of some rare or interesting 

 species of the bryological flora of Saone-et-Loire. It consists of 139 

 species, chiefly authenticated by the late M. Philibert. In subsidiary 

 lists are grouped the species of Mediterranean type, those of Alpine 

 type, and those of the Atlantic coast type. CI. Dismier || gives a list of 

 rare species found in the Vallee de la Voulzie near Provins (Seine-et- 

 Marne). 



North American Mosses. — E. CI. Brittonlf publishes some notes on 

 the nomenclature of North American mosses, with special reference 

 to a recent part of Brotherus' monograph of mosses in Engler and 



* Leipzig : W. Engelrnann, i. abt. 3 (1907) pp. 961-1008 (tigs.). 

 t Leipzig : E. Kummer, vi., lief. 5 (1907) pp. 257-320. 

 \ Proc. Berwick Nat. Club, xix. (1907) pp. 305-26. 



§ Rev. Bryolog., xxxiv. (1907) pp. 114-22. 



|| C.R. Congres Soc. Sav., 1906, 3 pp. 

 H Bryologist, x. (1907) pp. 100-1. 



