12 ÅNGSTRÖM, MLSCI BRASILIENSES. 



Macromitrium rugulosum J. Am. 



Densiuscule csespitosum, interne fuscescens, superne fla- 

 vidum; caulis fasciculato-ramosus vel simplex adscendens; 

 folia densius imbricata, sicca crispata, humida erecto-patentia 

 oblongo-lanceolata breviter acuminata apicem versus rugu- 

 losa flexuosa, margine grossius serrata, basi plicata, nervo 

 aureo excurrente, cellulis subseriatis, infimis linearibus aureis 

 grosse papillosis, mediis flavidis punctiformibus rotundis IsBvi- 

 bus, supremis subplumbeis punctiformibus pellucidis et laevi- 

 bus; folia pericheetialia plurima, externa ovata acuminata api- 

 cem versus rugulosa et flexuosa, interna latius ovata brevius 

 acuminata liaud rugulosa, nervo in apicem desinente, omnia 

 Isevia; pedicellus semiuncialis erectus sulcatus, vetustus fusca- 

 tus, siccus dextrorsum tortus; Capsula ovata, vetusta (junior 

 non vidi,) subtetragona fusca; calyptra flava non pilosa 

 apicem versus fusca. Peristomium et operculum non vidi. 



WiDGREN pauca specimina collegit. 



Macromitrio arguto Hamp. forsitan affine, diff'ert calyptra 

 non pilosa. 

 Macromitrium caldense J. Am. 



Laxe caespitosum; caulis repens vage inordinateque ra- 

 mosus, inferne nigro-fuscus foliis inter tomentum baud den- 

 sum squarrosis tectus, superne sordide lutescenti-viridis, 

 ramis sterilibus elongatis apicem versus dichotomis, fructi- 

 feris abbreviatis apicem versus ramosis; folia sicca crispula, 

 humida e basi erectå subpatentia apicibus plus minus ve 

 incurva lanceolata breviter acuminata acumine serrata basi 

 bullato-impressa uno latere reflexa et plicata apicem versus 

 implana et leviter flexuosa, nervo carinato fuscescente apicem 

 attingente, cellulis inferioribus linearibus flavescentibus ad 

 nervum et plicaturas prseprimis grossius papillosis, mediis 

 subseriatis oblongo-rotundis, supremis densissimis minimis 

 rotundis subopacis; folia perichsetialia pauca ovato-oblonga 

 angustius acuminata laevia magis pellucida; pedicellus junior 

 purpureus, senio nigro-fuscus, siccitate superne dextrorsum 



