DUSEN : PATAGONIAN AND FUEGIAN MOSSES. 



93 



subascendens, e basi ad medium parce radiculosus, simplex vel basi 

 pauci-ramosus, fertilitate saepe innovando superne ramulosus, sat tenuis ; 

 folia sicca appressa, humida erecta, suprema gemmaceo-conferta, usque 

 ad 2 mm. longa et 0.6 mm. lata, baud decurrentia, ovata-oblonga, cuspi- 

 data, concava, elimbata, marginibus integerrimis, baud vel vix reflexis, 

 carinato-nervosa, nervo crasso, basi c. 0.08 mm. lato, inferne rubescente, 

 superne viridi, praecipue in foliis supremis longe excedente, summo apice 



FIG. 19. 



- ; d, cellulae basales, 2-% e, capsula 



abed 

 Bryum hatcheri Dusen. a, b, folia, -^ ; c, cellulae apicles, 

 humiditate, *-. 



rarissime pauci-denticulato ; cellules laxae, pellucidae apicales medianaeque 

 subelongatae, plus minusque distincte hexagonas basales laxiores, rectan- 

 gular ; bractece perichtztii foliis caulinis similes, sed paulum majores et 

 longius cuspidatae ; seta erecta, subflexuosa, brunnea nitidiuscula, tenuis, 

 usque ad i cm. alta ; theca pendula, sat parva, oblonge obovata, brunnea, 

 collo turgido, sensim in sporangium transeunte ; annulus duplex ; dentes 

 exostomii humiles, subulati, 0.3 mm. alti et 0.04-0.05 mm. lati, superne 

 hyalini et laevissimi, ceterum flaviduli et minutissime granulosi, fere glabri, 

 remote lamellati, lamellis altis, c. 7; operculum stricte conicum; cetera 

 ignota. 



Hab. speciei, Patagonia australis, ubi verisimiliter in territorio fontinali 

 fluminis Rio Chico in terra lecta est. 



Nearly allied to Bryum minusculum C. Miill., to judge from the diag- 

 nosis differing in the stronger nerve of its leaves, and their larger size, 

 and by its perichaetial leaves, pendulous capsule and conical operculum. 



