DUSEN : PATAGONIAN AND FUEGIAN MOSSES. 85 



ovalibus vel subclavatis terminatis ; folia siccitate suberecta, incurvata, 

 marginibus subreflexis, suprema saltern plerumque subsecunda, madefacta 

 raptim reflectentia, e basi erecta subsquarrose reflexa, usque ad 1.6 mm. 

 longa et 0.4 mm. lata, lineari-lanceolata, carinata, marginibus planis vel 

 subrecurvatis, papillis vestitis, itaque crenulato-erosulis, nervo basi 0.06 

 mm. crasso, rubro, infra summum apicem evanescente, laevissimo ; cellules 

 basales breviter rectangulae, subpellucidae, ceterae omnino rotundatae, minu- 

 tissimae, c. 0.013 mm - rnagnae obscurae, utroque latere dense papillosae ; 

 cetera ignota. 



Hab. species Patagonia australis in truncis arborum, ubi verisimiliter in 

 territorio fontinali fluminis Rio Chico lecta est. 



Nearly related to Zygodon brownii Schwaegr. and of quite the same 

 appearance as that species. There is very little difference between the 



FIG. 13. 



a b c d 



Zygodon curvicaulis Dusen. a, folium, ; b, folium planefactum, 1 ; c, cellulae apicales, ^-J^ ; 

 d, cellulae basales, -^o. 



sterile plants of both species. Zygodon curvicaulis has perhaps less 

 crowded and a little less acute leaves than Z. brownii. The most con- 

 siderable difference, however, is shown by the gemmae. The Z. ctirvi- 

 caitlis has oval or subclavate ones, with transverse membranes of the 

 cells, and disposed at the end of radicels, or arising from the axils. 

 The gemmae of Z. brownii on the contrary are quite globular with radiate 

 cell-membranes and seem to have their origin from the lower part of the 

 leaf-nerve. 



Resembling also Zygodon intermedius Br. et Schpr., but differs in its 

 more robust and papillous rhizoides. The fruiting plant will probably 

 give other differing characteristics. 



