372 SUMMARY OF CURRENT RESEARCHES RELATING TO 



appreciable amount of lime for its well-being, and yet it is a typical 

 species of the high moors. As regards absorptive capacity for water, 

 this is much more developed in the high moor species than in those of 

 the plains. 



Distichophyllum, a Genus New to Europe.* — H. N. Dixon gives 

 an account of Distichophyllum carinatum Dixon and Nicholson, a new 

 moss found by its describers on wet rocks above St. Wolfgang See, near 

 Salzburg. The genus Distichophyllum has never before been gathered 

 in Europe, and its geographical distribution is therefore discussed at 

 considerable length. D. carinatum differs in certain respects from 

 almost all species of the genus, its nearest ally being D. cavifolium 

 Cardot, an Antarctic species. The explanation of the occurrence of 

 D. carinatum in Europe is at present impossible. Only five species of 

 the genus are found north of the Tropic of Cancer, and they are in 

 Asia ; but they exhibit no near affinity with D. carinatum. 



Moss-distribution in Somersetshire.! — W. Watson gives an account 

 of the distribution of the Bryophytes in the woodlands of Somersetshire. 

 He divides the native woods into three categories according to the 

 dominant element in their composition — oak-woods, ash-woods, oak- 

 hazel-woods. The oak-hazel-woods occur on the Triassic and Jurassic 

 marls and clays, the oak-woods at high elevations on the Sandstones, 

 whilst the ash-woods are characteristic of the slopes of the Carboniferous 

 Limestone. Some twenty-nine Hchens are commonly found on the trees. 

 Of the mosses the species most frequently met are pleurocarpous, of the 

 hepatics the Jungermanniacea?. The author gives a synoptical list 

 showing the comparative frequency of the various species in the three 

 types of native wood, together with several small lists of the species 

 characteristic of the different types of wood, native or artificial. 



Hepaticse of Europe.:}: — K. Midler publishes the seventh part of his 

 Die Lebermoose in Rabenhorst's Kryptogam en-flora. He describes the 

 species of Fossombronia and Haplomitrium, and thus brings to an end 

 the Jungermanniaceae Anakrogynas. He then gives a general account 

 of the Jungerrnanniaceae Akrogynas, with a key to the seven families ; 

 and starting with the Epigonantheas, he begins to treat its genera one by 

 one : — Gymnomitrium, Marsupella (unfinished). Keys, figures, explana- 

 tory diagrams, and critical notes characterise the work. 



European Mosses. § — E. Bauer publishes some critical notes upon the 

 eighth series of his Musci Europsei exsiccati, which contains fifty-seven 

 specimens, including several originals. Some of them were collected in 

 Sweden by Bomannsson, now deceased ; and the supply of them is 

 exhausted. 



New and Rare British Muscinese. — H. N. Dixon || records the 

 occurrence of Encalypta ciliata var. subciliata Warnst. among some 

 mosses collected by GL Stabler in Aberdeenshire twenty-five years ago. 



* Rev. Bryolog., xxxvi. (1909) pp. 21-6 (pi.). 



t New Phytolog.,viii (1909) pp. 90-6. 



j Leipzig : Kummer, 1909, lief. 7, pp. 385-448 (figs.). 



§ Allgem. Bot. Zeitschr., sv. (1909) pp. 17-18. 



i| Journ. of Bot., xlvii. (1909) p. 109. 



