94 



PATAGONIAN EXPEDITIONS: BOTANY. 



Gen. WEBERA Hedw. 



WEBERA CRUDA (L.) Schwaegr. 



Hab. Patagonia australis in territorio fontinali fluminis Rio Chico ad 

 basin arborum. 



WEBERA LONCHOCH/ETE Dusen n. sp. 



Pi. X, Figs. 7-9. 



Caulis gracillimus, erectus, strictus, simplex vel pauciramosus, inferne 

 defoliatus, e basi fere ad apicem atropurpureo-radiculosus, usque ad 3.5 

 cm. altus ; folia sicca subappressa, humida suberecta, stricta, inferiora 

 parva, sursum sensim accrescentia, lutescente viridia, nitida, c. 2 mm. 



FIG. 20. 



abed e 



Webera lonchochcete Dusen. a, folium, -^? ; b, cellulae apicales, ^^ ; c, cellulse basales, ; d, 

 capsula hum iditate, -^ ; e, sectiones folii, &J-. 



longa et 0.4 mm. lata, paulum decurrentia, e basi subovata lanceolata, 

 acuta, elimbata utroque latere arcuate replicate, marginibus planis, apicem 

 versus serrulatis, ceterum integerrimis, carinato-nervosa, nervo valido, 

 basi 0.09 mm. crasso, viridi, subflexuoso, percurrente, sed apicem vix 

 attingente ; cellulce firmae, pellucidae, lutescente virides, apicales et 

 medianae elongatae, basales laxiores, subrectangulae, ad marginem dis- 

 tincte rectangular ; bractecz perichcetii foliis caulinis similes, sed longius 

 attenuatae; seta tenuis, stricta, erecta, rubescens, nitidula, usque ad 4.5 

 cm. alta; theca pendula, pallide purpurea, ovato-oblonga, collo turgido, 

 in sporangium indistincte transeunte ; denies exostomii lanceolati, flavi, 



