Mr. R. Spruce on the Musci and Hepaticce of the Pyrenees. 277 



lations, nearly throughout their length : cilia none or quite rudi- 

 mentary. 



In ' Musci Pyr.' I placed this moss along with the first section of 

 Neckera (^Omalia, Brid.), to which it approaches very much in habit; 

 but the Omalice differ from it so essentially in some of their characters, 

 that I feel compelled to withdraw it from their society. 0. compla- 

 nata has the capsule very narrow-mouthed, the peristome conse- 

 quently small and the outer teeth remarkably slender ; the processes 

 of the inner are entire, very slender and fragile, and the basal membrane 

 rises very little above the mouth of the capsule (so that the moss might 

 be considered a true Neckera with as much justice as N. pumila, from 

 which I am not certain that it should be separated). The inflores- 

 cence is dioicous. O. trichomanoides has a wider-mouthed capsule ; 

 the inner peristome firmer, reddish, the basal membrane = ^th of the 

 whole, the processes deeply carinate but not lacunose. The inflores- 

 cence is monoicous, and the flowers are mostly solitary. 



Hypnum trichophorum differs from both these, not only in the pe- 

 ristome, but in the flaccid irregularly divided stems ; the symmetrical 

 leaves, which are not 4-stichous, nor (as in the Omalice) so decurved 

 at the apices as to make the branches appear channeled when viewed 

 from below ; the long necked capsule ; the conical lid, &c. In nearly 

 all these characters it is closely allied to H. denticulatum and puU 

 chellum, both of which have not unfrequently a nearly symmetrical 

 capsule. H. elegans is intermediate as to the form of its leaves 

 between H. denticulatum and H. trichophorum. 



It is with great reluctance I change Swartz's specific name, but 

 this is rendered compulsory by the removal of the species into Hyp- 

 num, where there is already a " piliferum." I shall not, however, 

 quarrel with those who are disposed to raise this section into a sepa- 

 rate genus, and restore to the species its original name. 



26. H.pulchellum, Dicks. ! Ease. 2. p. 13. t. 5. f. 6 ; Herb. Sice, 

 fasc. 9. n. 22. H. nitidulum, Wahl. Fl. Lapp. p. 370; M. P. 63. 



Hab. Z2_4 ad truncos putridos, in rupium fissuris, &c.^ P. occ. 

 et c. V. de Jeret ; Esquierry, &c. En montant au Lac Lehou 

 (Philippe!). 



27. H. denticulatum, L. Sp. PI. p. 1595 j Hedw. Muse. Frond. 

 4. t. 3. 



Hab. Zo_2 ad ligna putrida. A sequente florescentia monoica 

 distinctum. 



28. H. sylvaticum, L. Syst. Veg. p. 950 ; Schwgr. Suppl. t. 87 ; 

 M.P. 64 (ex parte). 



Hab. Zo_4 ad ligna putrida, in rupibus subhumidis, &c. 

 When growing in water or in moist places, the leaves of this spe- 

 cies often put forth radicles from or near their apices. 



29. H. undulatum, L. Sp. PI. p. 1589 ; Schwgr. Suppl t. 282 ; 

 M.P. 65. 



