[51] 



A. LUISIER : LES MOUSSES DE MADÈRE 



ÓI 



«Caulis erectus simplex, inferne radicellis ferrugineis tomento- 

 sus ; folia a basi subquadrata, superne latiora, amplexantia, paten- 

 tia, sensim subulato-angustata, canaliculata, ápice obtusiusculo sub- 

 integerrimo, nervo percurrente, marginibus ad basin partis patentis 

 sinuato-recurvis, cellulis in parte erecta angustis elongatis pelluci- 

 dis, in parte superiore patente parvis ovalibus brevioribusque 

 obscuriusculis : perichaetialia conformia, parum longiora ; theca in 

 pedúnculo purpúreo oblongo-cylindracea inclinata subinaequalis 

 laevis leptodermis, operculo anguste subulato recto aequilongo, 

 peristomio dentibus ad basin divisis, laciniis rubris punctulatis an- 

 gustis. » 



Mitten ajouíe les remarques complémentaires suivantes : 

 «Stems in the Azorean specimens densely tufted, an inch high, 

 the lower half matted together with rusty rootlets ; the upper por- 

 tion dull yellowish green, tinged with brown, scarcely altered when 

 dry. Seta scarcely half an inch high. Capsule of a red-brown colour 

 and thin papery substance, about a line long, at base tapering into 

 the seta, inclined at an angle of 45° I the operculum is of the same 

 colour as the capsule ; and the peristome, which is about one- 

 third of the lenght of the capsule, is composed of red teeth, which, 

 after the fali of the operculum, remain in an erect position ; the 

 calyptra is pale brown, ande reaches to the middle of the cap- 

 sulo. (*) 



La magnifique planche de la Bryologia atlântica, complète 

 admirablemente cette description. Rappelons que les espèces con- 

 nues de Rhampkidium sont dioiques. 



Trichostomum Hedw. 



Espèces atlantiques : 



T. azoricum Card. — Açores. 

 T. crispulum Bruch. — Madère. 



T. brachydontium Bruch. — Madère, Açores, Canaries. 

 T. littorale Mitt. — Madère, Açores, Canaries. 



( x ) Godtnan, Nat. Hist. of the Azores, p. 291 



