DUSEN : PATAGONIAN AND FUEGIAN MOSSES. 



77 



him alte conicum, breviter apiculatum ; sfioriz olivaceae, laevissimae, c. 0.08 

 mm. magnae ; paraphyses numerosi, aurei, sursum sensim dilatata, cellula 

 conica vel hemisphaerica terminata. 



Hab. Patagonia australis in territorio fontinali fluminis Rio Chico in 

 truncis ramisque arborum. 



Closely related to Barbula conotricha Miill.; differing from that species 

 in its more robust stem, in the nerve of the lower part of the leaves being 

 usually papillous on the dorsal side, in its smaller leaf-cells and its non- 

 cohering peristomial branches. 



Fam. GRIMMIACE.E. 



Gen. GRIMMIA Ehrh. 



GRIMMIA FALLAX Dusen n. sp. 



PI. VIII, Figs. 5, 6. 



Autoica, latiuscule pulvinatim caespitosa, caespitibus summitate flavid- 

 ulis, ceterum atro-brunneis ; caulis usque ad 2.5 cm. longus, gracilis, rig- 

 idus, iterum iterumque dichotome et fastigiatim ramosus ; folia sicca ap- 



FIG. 7. 



a b c d e f g 



Grimmia fallax Dusdn. a, folia, Jj; b, apex folii, &J-; c, d, bractese perichsetii, ^-; e, capsula 

 vetusta humiditate, g- ; /, cellulas apicales folii, -^ ; g, cellulae basales, ^f^. 



pressa, madefacta primo reflectentia, deinde recurvate patentia, e basi 

 amplexicauli, haud decurrente, fere lineari oblongo-lanceolata, usque ad 

 2 mm. longa et 0.45 mm. lata, medio et superne carinata, omnino su- 

 prema tantum apice hyalino sat brevi complanato, denticulate, plus minus- 

 que decurrente ornata, marginibus integerrimis, usque ad apicem reflexis, 

 nervo basi 0.06 mm. crasso, rubro percurrente ; cellules basales rectangulae, 



