432 SUMMARY OF CURRENT RESEARCHES RELATING TO 



marginal gemmae, and not by leafy propagnla. The processes of vege- 

 tative reproduction in these two genera are discussed at some length. 

 The specific descriptions are exhaustive, fully illustrated, and accom- 

 panied by an abundance of critical remarks. 



A New Irish Hepatic* — I. Douin describes Addanthus dugortiensis, 

 a new and remarkable hepatic gathered by H. W. Lett in Achill Island. 

 Its affinity is with A. unciformis, which occurs at the Cape of Good 

 Hope, Madagascar, and Cape Horn. It is a further instance of the 

 survival in Ireland of remnants of a flora usually with tropical affinities, 

 and, as is usual with these survivals, it is sterile. 



Mosses of Korea.f — J. Cardot publishes a list of 98 mosses gathered 

 by the Abbe Faurie in seven localities in Korea. No previous list has 

 ever been published. Descriptions and figures of 27 new species are 

 given. Though the climate of Korea has been stated to resemble that of 

 China and Manchuria, the moss-flora approximates to that of Japan, 

 50 of the species being common to Korea and Japan, while only 20 are 

 found in China. The bryology of Manchuria is almost unknown. In 

 Korea are found 12 species of North American type, 10 of them occur- 

 ring east of the Rocky Mountains — a curiosity of distribution which 

 applies to several Japanese mosses. 



North American Mosses. — A. J. GroutJ continues his notes on the 

 peristome, treating specially of the structures found in Encahj2Jta and 

 the affinity shown to Georgia, Webera, and Tortula. He also calls atten- 

 attention § to W. Gardiner's " Twenty Lessons on the British Mosses '* 

 (Dundee, 1847), a little book very rare in the United States, but important 

 as an early contribution to the development of nature study. The same 

 author || urges American bryologists to examine hundreds of specimens 

 of the common species of Brgum, and to keep a record of the varia- 

 tions in the arrangement of the archegonia and antheridia ; for he is 

 confident that far too many species in the genus have been based upon 

 the character of the inflorescence, which may not be so constant as has 

 been supposed. For instance, Corbiere has found that B. pallescens 

 may be either monoicous, dioicous, or synoicous. J. M. HolzingerlF 

 describes Rhacomitrium Fletii, a new species collected near a steam-jet 

 in the crater of Mt. Tacoma, in the Cascade Mountains, at an altitude 

 of 14,500 ft. In another article** he gives instances of the occurrence 

 of species in localities so widely separated (e.g. Caucasia and North 

 America) as to be suggestive of the evolutional and geological history 

 of our floras. E. G. Britton ff publishes notes on nomenclature with 

 reference to species of Brachelgma, Papillaria, Pilotrichella, Ectropo- 

 thecium, and Homalotkeciwn. 



i* Eev. Bryol., xxxi. (1904) pp. 53-5 (fig.). 



t Beih. Bot. Centralbl., xvii., (1904) pp. 1-44 (27 figs.). 



% Bryologist, vii. (1004) pp. 37-9 (1 pi. and fig.). 



§ Tom. cit , pp. 39-40. j| Tom. eit., pp. 50-1. 



«|f Tom. eit., pp. 41 (with fig.). ** Tom. cit., pp. 42-3. 



*t Tom. cit., pp. 4S-50. 



