598 SUMMARY OF CURRENT RESEARCHES RELATING TO 



L. Loeske * publishes further critical remarks concerning certain 

 mosses collected by him in the Algauer Alps. 1. Brachythecium 

 reflexum, its var. subglaciale, B. glacials var. dovrense, and B. tromsoense 

 form a continuous chain. The last named is a snow-water form of 

 B. reflexum. 2. B. glaciate probably is the last evolved link of the 

 chain B. curtum-B. Starkei. 3. Pohlia commutata, P. cucullata, 

 P. Rothii, and P. gracilis, in the high Alps on firm ground, all form 

 low patches with appressed leaves and distinct five-angled stem. They 

 may be designated as var. carinata of their respective species. 4. 

 Limpricht's Webera carinata is probably a carinate form of Pohlia 

 commutata. 5. The P. carinata of Bauer's Exsiccati, No. 312, does 

 not agree with Limpricht's description, and is possibly merely a 

 hygrophilous form of P. cucullata. 6. Webera Payotii is not a proper 

 species, but consists of hygro-hydrophilous extremes of Pohlia gracilis, 

 P. torrentium, and Anomobryum filiforme. 7. Bryum filum Schirnp., 

 is P. gracilis var. elata. 8. Owing to the great difficulty in distin- 

 guishing sterile forms of Pohlia from the high Alps, and to the 

 variability of these forms, according to their place of growth, it is 

 indispensable for the collector to take careful note of the conditions 

 of the habitat and of the associations of the plants. 



Forms of Drepanocladus.f — W. Monkemeyer publishes critical 

 remarks on G. Roth's recent synopsis of the European forms of 

 Drepanocladus, and complains of the practice of Roth and others of 

 creating small and artificial species, and gives numerous instances, 

 pointing out that many of them are seasonal forms. 



L. Loeske, % writing of Drepanocladus furcatus Roth and v. Bock, 

 expresses his firm conviction, shared also by Monkemeyer, that it is 

 nothing but Hygrohypnum ochraceum var. uncinatum, and that it is in 

 no way connected with Drepanocladus, and does not in any way form 

 a connecting link with that genus. 



Sphagnum robustum.§ — J. Roll discusses the history of the species 

 Sphagnum robustum Roll, and of the treatment which it and he himself 

 have received at the hands of C. Warnstorf ; and he criticises severely 

 the views and methods of that author, especially in respect of the pores 

 in the leaf -cells of S. robustum. 



Climacium dendroides var. turgescens.|| — P. Janzen describes 

 and figures a new variety of Climacium dendroides, collected near 

 Pontresina. The leaves of this var. turgescens are broadly ovate, boat- 

 shaped, cucullate, and auricled, obscurely denticulate above. A. Geheeb 

 is of opinion that the plant is possibly a new species. 



Hypogastranthus, a New Genus.1T— V. Schiffner describes and 

 figures Hypogastranthus, a new genus of hepatics. The plants were 

 collected by him in Sumatra sixteen years ago, and sterile specimens 

 were issued in his Exsiccatae as Lophozia (?) sumatrana. Subsequent 

 discovery of its male and female inflorescences enables him to describe 



* Hedwigia, xlviii. (1909) pp. 329-39. t Tom. cit., pp. 309-15. 



% Tom. cit., pp. 316-18. § Allgem. Bot. Zeitschr., xv. (1909) pp. 102-5. 



II Hedwigia, xlviii. (1909) pp. 340-4. f Tom. cit., pp. 304-8 (pi.). 



