ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 577 



Harz mountains, and suggests a second hypothesis — that they have been 

 imported from Scandinavia by migratory birds, citing the curious 

 distribution of Mniimi spinulosum, newly recorded for North Grermany, 

 as a parallel instance. 



Relations between Moss Structure and Habitat.* — A. J. Grout 

 points out some relations between structure and habitat in mosses. 

 Xerophytic species apparently tend to develop short thick-walled leaf- 

 cells, often with papillcfi over the lumen. Presumably the papillae tend 

 to retard transpiration. Pleurocarpous mosses growing on trees tend to 

 develop short thick-walled cells, especially at the basal angles of the 

 leaves — a similarity of structure which has led to confused classification 

 of such mosses. Tree-growing mosses also tend to develop erect capsules 

 and the correlated imperfect peristomes. This also to some extent seems 

 to apply to other xerophytic mosses. Aquatic or sub-aquatic pleuro- 

 carpous mosses apparently tend to develop enlarged and inflated alar 

 cells. Cleistocarpous and gymnostomous mosses appear to exhibit an 

 adaptation to a damp soil not closely covered with other vegetation. 



Wrongly Labelled Moss Collections. — A. Geheebf writes about 

 some mosses collected by Liebetrut in 1864 in Madeira and the 

 Pyrenees, the labels of several of which had become interchanged. For 

 instance, Fissidens grandifrons is wrongly labelled as from Madeira, 

 while an unknown Plagiothecium from the Pyrenees turns out to be 

 Grossomitrium fontanum, and therefore must have come from Madeira. 

 Again, Folytriclmm alpinum from Madeira is absurd, but would pass if 

 from the Pyrenees. This collection was in the possession of the late 

 G. Bauer (171)4-1888) of Berlin. 



A. Geheeb % writes about another collection of mosses, apparently 

 collected at Golima in Mexico by E.Kerber and yet containing specimens 

 of SiJlachnum luteum and S. ruhrum (which are known only from the 

 Arctic regions). This collection reached Geheeb through the hands of 

 G. Egeling, who added to it some South American specimens, gathered by 

 Lechler and labelled by Hohenacker ; but among them curiously enough 

 was a fruiting specimen of Dawsonia siqierha which is not a South 

 American but a Polynesian species. 



Classification of Mosses.§ — V. F. Brotherus has completed another 

 part of his systematic arrangement of the Musci in Engler and Prantl's 

 " Die Natiii'lichen Pflanzenfamilien." The families treated are Lembo- 

 phyllacea, with four genera, one of which is new — DoUchomitra ; 

 Entodontace^, with nineteen genera, two of which are new — Schivetsch- 

 Jceopsis, Entodontopsis ; FabroniaccEe, with ten genera ; Pilotrichacese, 

 with two genera ; Nematocese, with one genus ; Hookeriaceae, with 

 twenty-six genera, four of which are new — Bellia, Leskeodon, Lepido- 

 pilidium, Callicostellopsis. 



Yorkshire Muscine8e.|| — W. Ingham publishes notes on two York- 

 shire hepatics. (1) Lophozia atlantica was found by him at Hebden 



* Torreya, vii. (1907) pp. 128-9. 



t Rev. Bryolog., XKxiv. (1907) pp. 70-1. t Tom. cit., pp. 71-3. 



§ Leipzig: W. Engelmann, 1907, lief. 227-8, pp. 865-960. 



II Naturalist, No. 603 (1907) pp. 151-2. 



