Bryophyten. 71 



Dixon, H. N., Studies in the Bryology of New Zealand, 

 with special reference to the herbarium of Robert 

 Brown. Part II. (New Zealand Inst. Bull. III. 2. p. 31—74. 2 pl. 

 Wellington, 7th Sept. 1914.) 



The author continues his study of the Dicranaceae, giving a 

 critical account of thirteen genera, with a careful sifting of all the 

 species recorded for New Zealand. The genera Bruchia and Di- 

 chodontium are rejected for lack of confirmatory evidence of their 

 existence in New Zealand. Keys to the genera and species are 

 provided. The new species Pleuridiunt longirostra and Dicranella 

 wairarapensis are described; and these and other species are figured. 



A. Gepp. 



Kashyap, S. R., Morphological and Biological Notes on 

 new and little-known West- Himalay a n Li verworts. II. 

 (New Phytologist. XIII. 9. p. 308—323. 8 figs. London, Nov. 1914.) 



The author treats of the following: I) Exormotheca tuberifera 

 n. sp., which differs from the other species of the genus in 3 ways: 



I) The scales have no appendages. 2) The plants form apical and 

 particularly ventral tubers; 3) The female receptacle has stomata. 



II) Stephen soniella brevipedinculata n. gen. et sp., related to Exormo- 

 theca but differing in its simpler sporogonium, empty air-chambers, 

 and above all in the continuation of growth after the formation of 

 the female receptacle. It also resembles Boschia and Coesinia in 

 several features. III) Plagiochasma appendiculatuni L. et L. IV) P. 

 avticulatum n. sp. The most important feature of this plant is that 

 both the male and the female receptacles are terminal at first, and 

 not dorsal outgrowths as in other species of Plagiochasma. 



A. Gepp. 



Kashyap, S. R., Morphological and biological notes on 

 new and little known West-Himalay an Liiverworts. III. 

 (New Phytologist. XIV. 1. p. 10—18. London, Jan. 1915.) 



Reduction in the Marchantiales consists in the development of 

 the thallus at the expense of the sex organs. This occurs in two 

 ways: either 1) by a decrease in the number of branches of the 

 female receptacle together with elimination of the stalk, as in Exor- 

 motheca, Aitchisoniella and Targionia; or 2) by a decreased number 

 of archegonia in each involucre (until but one remains), as in Astro- 

 porae and Operculatae. The object of the development of the vege- 

 tative thallus is the resistance to drought. 



The author describes and figures the following hepatics: Cryp- 

 tomitrium himalayerise n. sp., Fossombronia himalay ensis n. sp., 

 Sewardiella tuberifera n. gen. et sp. (closely related to Fossombronia), 

 Anthoceros himalayensis n. sp., A. erectus n. sp., Athalamia pinguis 

 Falc, Gollaniella pusilla Steph. 



Some additions and corrections of names used in earlier sections 

 of the paper are appended. A. Gepp. 



Nicholson, W. E., Lepidosia sylvatica in Br itain, (Journ. ßotany 

 LIII. p. 88—90. March 1915.) 



The author shows that the North American hepatic, Lepidosia 



sylvatica Evans, which has a wide ränge in Europe, occurs also 



n Britain, namely in Sussex. He found a few old, but perfect, 



