478 Mr. R. Spi'uce on the Musci and Hepatica of the Pyrenees. 



XL VIII. — The Musci and Hepaticce of the Pyrenees. 

 By Richard Spruce. 



[Continued from p. 380.] 



Tribus 20. Bruchiace^, C. Muell. 

 44. Astornum, Hampe. 



256. A. nitidum, Hedw. Muse. Frond, i. t. 34 (sub Phasco); 

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



Hab. Zo_i P. c. in argillosis humidis secus viarum latera in 

 valle Trebons, rarissime ! P. occ. circa Dax (Grateloup in Fl. 

 Fran9aise) . 



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

 Phascum altern., Br. Europ. ! /. c. p. 15. t. 7 (non Dicks., nee 

 Schwgr.). 



" Var. 1, antheridiis in floribus cauligenis gemmiformibus ; 

 etiam paraphysibus absque antberidiis (rarissime antheridiis non- 

 nullis abortivis adjectis) in axillis foliorum superiorum dispositis ;" 

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



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

 formibus, et insuper antheridiis paraphysatis numerosis (non- 

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

 Hab. Zo_i in arenosis cii'ca 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 Europsea ' as the authors of that work v^fould 

 lead one to suppose ; and fully prepared as I am to acknovv^ledge 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. Seligeriace^. 



{SeligeriacecB et Campylosteliacece, Bryol. Europ.) 



45. Campylostelium, Bryol. Europ. 



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

 Europ. Campylost. p. 3. 1. 1. 



Hab. Z2 P. c. locis umbrosis in saxis arenaceis. Labassere. 

 V, de Castelloubon. 



46. Brachyodus, Fiirnrohr. 



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



