478 Mr. R. Spruce on the Musci and Hepatica of the Pyrenees, 



XLVIII. — The Musci and Hepatica of the Pyrenees. 

 By Richard Spruce. 



[Continued from p. 380.] 



Tribus 20. Bruchiace^, C. Muell. 

 44. Astomum, Hampe. 



256. A. nitidum, Hedw. Muse. Frond, i. t. 34 (sub Phased)] 

 Br. Europ. Phascum, p. 12. t. 6 ; M. P. 322. 



Hab. Zo_i P. e. in argillosis humidis seeus viarum latera in 

 valle TrebonSy rarissime ! P. occ. cirea Dax (Grateloup in Fl. 

 Fran9aise). 



257. A. alternifolium, Brid. Mant. Muse. p. 10 (sub Pleuridio). 

 Phascum altefn.y Br. Europ. ! /. c. p. 15. t. 7 (non Dieks., nee 

 Sehwgr.). 



" Var. 1, antberidiis in floribus cauligenis gemmiformibus ; 

 etiam parapbysibus absque antheridiis (rarissime antheridiis non- 

 nullis abortivis adjectis) in axillis foliorum superiorum dispositis ;" 

 M. P. 323. — Hob, Z^ in arenosis humidis circa Juranqon. 



" Var. 2, antheridiis absque parapbysibus in floribus gemmi- 

 formibus, et insuper antheridiis paraphysatis numerosis (non- 

 nunquam quinis) in foliorum superiorum axillis ;" M. P. 324. — 

 Hab. Zo_i in arenosis circa St. Sever, Pau et B.-de-Bigorre. — 

 " Florescentia valde variabilis ; species distincta tamen a Ph. sub- 

 ulato foliis perichsetialibus videtur. Confer Br. Europ. /^ M. P. /. c. 



The inflorescence of Phascum alternifolium and of several other 

 mosses (e. g. certain Brya) is by no means so constant to the type 

 assigned in ' Bryologia Europaea ' as the authors of that work would 

 lead one to suppose ; and fully prepared as I am to acknowledge the 

 importance of the characters derived from the inflorescence, it ap- 

 pears to me that science will lose rather than gain if we shut our 

 eyes to the aberrations which it undeniably presents. To assume a 

 greater degree of invariableness in the inflorescence than exists in 

 any other part of the plant, is as illogical as in practice it is found 

 to be inaccurate. 



Tribus 21. SELIGERIACEiE. 



{Seligeriacece et Campylosteliacea, Bryol. Europ.) 

 45. Campylostelium, Bryol. Europ. 



258. C. saxicola,W. et M. Bot. T. p. 167 (sub Dicrano) ; Br. 

 Europ. Campy lost. p. 3. t. 1. 



Hab. Zg P. c. locis umbrosis in saxis arenaceis. Labassere, 

 V. de Castelloubon. 



46. BrachyoduSy Fiirnrohr. 



259. B. trichodes, Mohr, Crypt. Gew. p. 85 (sub Gymnostomo) ; 



