THE BRITISH MOSS-FLORA. 351 



6 plates containing illustrations of 26 species ; and treats of 14 

 genera. Upon comparing it with "Wilson's ' Bryologia Britannica,' 

 we find a new genus and a new species added to the British Flora. 

 The new genus is Nanomitrium Lindb., of the four species of which 

 one only is found in Britain, -V. tenerum Lindb. (Phascum Bruch). 

 This species is remarkable for having been found twice only, — at 

 Niesky in Silesia, by Breutel, some sixty years ago, and at Hurst- 

 pierpoint, by Mitten, in 1854. The new species is Funaria micro- 

 stoma Br. et Sch., occurring in Sussex and Hampshire. 



Entosthodon is united with Funaria, and constitutes a section 

 of that genus. Funaria calcarea Wahlenb. includes F. hibernica 

 Hook, as a synonym, and under it is given an account of the con- 

 fused synonymy of F. Muehlenbergii and of Lindberg's attempt to 

 put an end to it by re-naming the species. 



Mielichhoferia nitida Hornsch.and Orthodontium gracile Schwaegr. 

 appear respectively as Oreas MieUchhoferi Brid. and Stableria 

 gracilis Lindb. The genus of Bryacem which is commonly known 

 as Webera must be looked for under Pohlia, the author having 

 already employed the name Webera for Diphyscium in part x. 



It is to be regretted that a work of such costliness and 

 beauty is not more carefully revised, e.g., on p. 110, at the end of 

 the list of works quoted in reference to Splachnum splmricum, after 

 " Juratz." should be supplied the words " Laubm. oester.-ung. 234 

 (1882)." Hampe's genus, which " Mr. Mitten unites with Mielich- 

 hoferia," is not Haplomitrium, which is a genus of Hepatics, but 

 Haplodontium. Leptobrgum tenuinerve is not one of Spruce's species, 

 as one might be led to suppose by the text, but is No. 252 of 

 Spruce's ' Musci Amazonici et Andini,' called by Lindberg (?) Lepto- 

 brgum tenuinerve. (There is in the Herbarium of the British 

 Museum a specimen of this moss, received from Lindberg and 

 named Leptobrgum angustinerve Lindb.) " L. robustum from Aus- 

 tralia " is also one of Lindberg's species. These, however, are but 

 trifling errors, and do not detract from the value of Dr. Braith- 

 waite's work. 



The name Leptobrgum gives rise to an interesting speculation as 

 to who was the real authority for that name, and for the com- 

 bination Leptobrgum pgriforme. Lindberg and British authors, in- 

 cluding Dr. Braithwaite, make Wilson the authority ; continental 

 authors accept Schimper. The names first appeared in the year 

 1855, — in Wilson's 'Bryologia Britannica,' p. 219, and in Schimper's 

 ' Corollarium Bryologire EuropreaV p. 64. Wilson does not quote 

 the author's name, which would lead one to believe that he 

 originated the genus. Schimper, on the other hand, quotes 

 himself as the author in the ' Synopsis Muscorum Europasorum,' 

 pp. 328, 329 (1860), and retains the claim in edition ii. pp. 889, 

 390 (1876). The questions to be settled are two: — (1), whether 

 AVilson's 'Bryologia' preceded Schimper's 'Corollarium,' or vice 

 versa; and (2), whether Schimper invented the name and com- 

 municated it in MS. to Wilson, and the latter introduced it into 

 his book without acknowledging its source. ^ q. 



