62 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Watts, W. W., & T. Whitelegge — Census Muscorum Australiensium. 



[A classified catalogue of the frondose mosses of Australia and Tasmania.] 

 Abstr. Proc. Linn. Soc. N.S. Wales (Sept. 30, 1905) 3 pp. 



Wolcsansky, J. — Adatok Magyarorszag lombos mohainak ismeretchez. (Con- 

 tributions to a knowledge of the mosses of Hungary.) 



Novem. kozlem. iv. (1905) pp. 28-33. 



Worsdell, W. C— The Principles of Morphology. 



[Discusses the Bryophytes as indicating stages in the evolution of the 

 higher plants.] New Phytologist, iv. (1905) pp. 124-33, 163-70. 



Young, W. — The Hepatics of the Glenshee Distriot. 



[Adds 12 new records for E. Perthshire, 6 for Forfarshire, 5 for S. Aber- 

 deenshire, and 1 for Scotland — Cephaloziella Jackii. The paper is 

 the result of a week spent in collecting during July 1904, and consists 

 of a series of field-notes.] 



Trans. Proc. Bot. Soc. Edinburgh, xxiii. (1905) pp. 93-98. 



Zodda, G. — Le Briofite del Messinese. (Bryophytes of the Messina district.) 



Atti Accad. Dafnica Acireale, i. (1905) 14 pp. 



,, ,, Una gita alle isole Eolie. (A trip to the iEolian Isla ds.) 

 [Contains mosses and hepatics.] 



Atti Accad. Pelorit, xix. (1904) 38 pp. ; 

 See also Hedwigia, xliv. (1905) p. 171. 



Thallophyta. 



Algae. 

 (By E. S.^Gepp.) 



Morphology and Biology of Algae.* — F. Oltmanns has brought out 

 the second volume of his great work on the Morphology and Biology of 

 Algae. This volume gives a general survey of the whole subject, while 

 the first volume dealt only with the systematic side of the group. The 

 author emphasises the fact that his views as to the relation of the various 

 groups to each other are put forward as rather tentative than final. He 

 considers that all algae originated from the protista, rising through 

 flagellata along different lines to true algae ; and he holds that sexuality 

 did not appear first in one group and spread from that to the rest of the 

 algae, but that it appeared quite independently in various families. He 

 also thinks that in each large group development of oogamy has started 

 from a rather poor isogamy. The main divisions into which the present 

 volume is divided are as follows : the system of algae, the development 

 of the reproductive organs, the algal cell, nutrition of algae, conditions 

 of life, periods of vegetation, stimulation, polymorphism, alternation of 

 generations, adaptation, apparatus and methods of work, index of 

 authors, index of subjects. From these headings it will be seen that all 

 the ground is fairly covered, especially as the author has consulted the 

 latest papers on the various subjects. Under adaptation, all the many 

 forms of algae are dealt with, bush-like, hollow and swollen, whip-like, 

 net-like, etc., dorsiventral, cushion-shaped, and encrusted forms, epi- 

 phytes, endophytes, and parasites, plankton, aerial forms, and species 

 symbiotic both with other plants and with animals. The book is fully 



* Jena : Gustav Fischer, 1905, vi. and 443 pp. 150 figs, in text, 3 genealogical 

 tables. 



