DUSEN : PATAGONIAN AND FUEGIAN MOSSES. 



95 



o_44 mm - alti et Das i -8 mm. lati elimbati, superne hyalini et papillosor 

 scaberuli, ceterum minutissime granulosi, dense lamellati, lamellis 15-18, 

 subdenticulati ; denies endostomii dentibus exostomii aequilongi, hyalini, 

 late perforati, superne nodulosi et papilloso-scaberuli ; cilia dentibus 

 aequilonga, nodiuscula, scaberula, singula vel interdum bina; membrana 

 basilaris 0.2 mm. alta. 



Hab. speciei Patagonia australis, ubi in territorio fontinali fluminis Rio 

 Chico in consortio Aulacomnii palustris (L.) Schwaegr. occurrit. 



Nearly related to Webera sphagnicola Schpr., but differing from that 

 species by its elimbate and comparatively remotely lamellated external 

 peristomial teeth and by having fewer cilia ; besides the Webera loncho- 

 chczte is syncecious, the Webera spliagnicola dioecious. 







Fam. MEESEACE^:. 



Gen. MEESEA Hedw. 



MEESEA PATAGONICA Dusen n. sp. 



Pi. XI, Fig. i. 



Dense caespitosa; canlis gracillimus, usque ad 10 cm. longus, simplex, 

 parce radiculosus vel fere eradiculosus, inferne flexuosus, nudus, fuscus, 

 superne strictus, sordide viridis ; folia 2.5-3.0 mm. longa et basi plane- 

 facta 0.8 mm. lata, trifaria, sat distantia, siccitate plus minusque crispata, 



FIG. 21. 



Mecsea patagonica Dusen. a, folium a latere visum, 

 2 ; d, cellulae basales folii, 



; b, folium deplanatum, ^-; c, apex folii, 



