Mr. R. Spruce on the Musci and Hepatica of the Pyrenees. 279 



" Var. foliis rigidis, nervo crassissimo instructis /' M. P. 40. 

 H. VallisclauscE, Brid. ! Br. Univ. 2. p. 534. 



Hab. in fontibus profundis secus ripas flum. Adour, in vicinia 

 pagi Aste, P. c. 



Specimens gathered by Messrs. Arnott and Requien at Vaucluse 

 agree well with Bridel's description, and are quite the same as my 

 own fvomJste. In * Musci Pyren.' I had considered H. Jilicinum and 

 fluviatile not distinct, relying on Bridel's description of the latter 

 (Br. Univ. p. 532), where the falcato-secund leaves (rarely seen in real 

 H. fluviatile) are strongly insisted on. H. fluviatile verum is, how- 

 ever, readily distinguished from H» fllicinum by the monoicous inflo- 

 rescence. 



38. H. commutatum, Hedw. Muse. Frond. 4. t. 26. 

 Hab. Zi_2 per Pyrenseos in scaturiginosis calcareis. 



Var. alpestre, Schimp. in litt. ; P. c. Vallon d* Arise (Philippe !) 

 P. or. Port Negre (Arnott !). 



39. H. uncinatum, Hedw. Muse. Frond. 4. t. 5 ; M. P. 41. 



Hab. Z2_3 ad saxa et ligna putrida. 



§ 12. CuPRESSIFORMIA, 



40. H. Crista-castrensiSy L. Sp. PI. p. 1591 ; Hedw. Sp. Muse, 

 t. 76; M. P. 43. 



Hab. Zg in Pyr. centralium sylvaticis, ad cataractam diet, la 

 Cascade du Cceur in valle du Lys, etiam in valle Lesponne ; in 

 P. occ. loco Pont d'Espagne. 



41. H. molluscunij Hedw. Muse. Frond. 4. p. 56. t. 22; M. P. 

 44. 



Hab. Zo— 5 in rupibus arborumque basi. 



" Var. terrestre, foliis insigniter serratis plerumque striatis •/' 

 M. P. 45. 



Hab. ad terram in sylvis circa Pau, locis Pare de Pau, Bois de 

 Gan, &c. 



In the Pyrenees, this species sports into innumerable forms, some- 

 times simulating H. flagellare in the laxly spreading, scarcely at all 

 secund leaves, which are shorter than ordinary, more sharply ser- 

 rated and distinctly striated ; at other times it puts off the charac- 

 teristic pectinato-pinnate ramification and assumes the habit of H. 

 callichrous, to which also it approaches in the form of the leaves and 

 their faintly-toothed margins. A small tuft of male plants was 

 gathered in Z^ (Port de Cauterets) growing with Encalypta rhahdo- 

 carpa. 



42. H flagellare, Dicks. Crypt. Fasc. 2. p. 12; H. et T. ! 

 Muse. Brit. t. 25 ; M. P. 9. 



Hab. Zi sup. P. c. ad cataractam inter ipagnm Labassere et fon- 

 tem diet, lafontaine sulfureuse: nusquam alias vidi. 



