276 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Bryophyta. 

 (By A. Gkpi.) 



Morphology of West Himalayan Liverworts.*— S. R. Kashyap 

 publishes morphological and biological notes on new and little-known 

 West Himalayan liverworts. 1. Exormotheca tuber if cm is a new species 

 which differs from other members of the genus in three ways : — The 

 scales have no appendages. The plants form apical and particularly 

 ventral tubers. The female receptacle has stomata. 2. Stephensoniella 

 brevipedunculata is a new genus and species related to Exormotheca, 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 Boxrhia and Corsinia in several features. 3. Note on 

 Plagiochasma appendiculatum L. etL. 4. P. afticulatum is a new species 

 remarkable in that both the male and the female receptacles are terminal 

 at first, and not dorsal outgrowths as in other species of Plagiochasma. 



Continuing his studies, he gives an accountf of the following : — 

 Oryptomitrium himalayense, FosHomhronia himalayensis, Sewardiella 

 tubifera, Anthoceros himalaymsis, A. erectus. These are all new to 

 science, and Seieardiellais a new genus closely related to Fossombronia. 

 He gives an account also of Athalamia pinguis Falc. and Gollaniella 

 pusilla Steph. 



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 Exormotheca, 

 Aitchisonidla and Targionia ; or (2) by a decreased number of arche- 

 gonia in each involucre, as in Astroporas and Operculatae. The object 

 of this development of the vegetative thallus is the resistance to drought. 



Rare European Mosses.J — Gr. Roth publishes descriptions and 

 figures of some new or little known European mosses : — Hymenostomum 

 Meylani Amann (Switzerland) ; Pohlia torrentium Roth (Norway) ; 

 Bryum (Eubryum) sarekense Arn. and Jens. (Sweden) ; B. Payoti 

 Schimp. (Savoy) ; B. crispulum Hampe (Sweden) : B. Rechini Card. 

 (Savoy) ; Drepanocladus aduncus var. tenerrimus Roth and V. Bock 

 (Livland) ; D. capillifolius var. pseudo-Semltneri Roth and V. Bock, and 

 var. robustus Roth and Y. Bock (Livland) ; D. serratus var. crassinervis 

 Roth and Roll (Unterporlitz) ; Scleropodium ornellanum Mol. (Lom- 

 bardy) ; Limnobium lusitanicum Roth (Portugal). 



Mosses of Madeira and Teneriffe.§ — H . Winter publishes an 

 account of the mosses of Madeira and Teneriffe, the result of a visit 

 made in March to May, 1912. Obviously the complete moss-flora of 



* New Phytologist, xiii. (1914) pp. 308-23 (8 figs.), 

 t New Phytologist, xiv. (1915) pp. 1-18 (figs.). 



* Hedwigia, lv. (1914) pp. 148-56 (1 pi.). 

 § Hedwigia, lv. (1914) pp. S2-144 (figs.). 



