Mr. R. Spruce on the Musci and Hepatice of the Pyrenees. 275 
the inner peristome are imperforate, not ‘‘ quatuor lacunis notati,” as 
described by Schwaegrichen. 
§ 6. SERPENTIA. 
17. H. serpens, L. Sp. Pl. p. 1596 ; E. Bot. t. 1037 ; M. P. 60. 
Hab. Zy_s in arboribus imis, &c. ; in montibus sequente minus 
frequens. 
18. H. subtile, Hedw. Musc. Frond. 4. t. 9 (sub Leskea) ; 
M. P. 61. 
Hab. 7,_, ad truncos vetustos, sat frequens; rarius ad rupes. 
Forét de Lhieris ; Vallée de Lutour, &c. 
19. H. Sprucii, Bruch in litt. (sub Leskea) ; Spruce in Lond. 
Journal of Botany, 4. p. 180; M. P. 62. Hypnum confervoides, 
Drumm. ! Muse. Amer. n. 190 (ex parte) : non Brideli. 
Hab. Z, P. occ. 2 in rupium umbrosarum fissuris montis Lizé 
et vallis Bésst ; P. ce. ¢ Vallon de Courbettes et Forét de Lhieris, 
cespitibus Mnii serrati immixtum. 
The inflorescence of this species is truly dioicous *, and from the 
circumstance of female plants alone being found in the W. Pyrenees, 
and only male plants in the Central, it may readily be conjectured that 
no fruit was observed. 
§ 7. TENELLA. 
20. H. tenellum, Dicks. Cr. Fasc. 4. t.11. f.12; M. P. 25. 
Hab. Z, im muris rupibusque calcareis circa Pau et B.-de-Bi- 
gorre. Mt. Ferrand, P. or. (Arnott !). 
§ 8. Depressa, 
21. H. silesiacum, P. Beauv. Prodr. d’ Auth. p.70; Schwgr. Suppl. 
t.94; M.P.46. H. repens, Poll. palat. ; Duby, ‘Bot. Gall. ed. 2. 
P. 2. p. 562. 
_ Hab. Z,_, ad truncos putrescentes per Pyrenzeos precipue oc- 
cidentales. 
In the Pyrenees I never observed this species but on rotten wood, 
but in Dec. 1847 I met with it on soft sandstone in Arncliffe Wood, 
Eskdale. All the other British specimens I have seen belong to the 
following species. 
22. H. Miihlenbeckit, Schimp. ! mst. 
Hab. Z.~3 in terra rupibusque subhumidis, rarissimum. Lac 
de Séculéjo. Inter pagos Luz et Baréges. 
23. H. depressum, Bruch ! in Bot. Zeit. 1824, p. 763.. H. con- 
fertum var. ¢. depressum, Brid. Br. Univ. 2. p. 767. 
Hab. Z, P.c. Vallon de Serris, ad rupes calcareas. 
* Planta mascula foeminea tenuior. Flores sparsi, cauli ramisque solute 
adherentes. Folia pericheiialia sub—10, externa minuta, lanceolata, interna 
ovata brevi acumine, omnia serrata, enervia. Antheridia 2, ovalia, brevi- 
pedicellata, singula paraphysibus 2 stipata. : 
| 18* 
