402 Williams: Mosses from west coast of South America 



Anomobryum filiforme (Dicks.) Husn. 



Peru: above Toyatoya, August 18941; JuHaca, September, 

 19101. 



Bryum concavum Mitt. 



Bolivia: La Paz, August 18895, i88q6, 19463a. 



Peru: Arequipa, August, 19529; Cuzco, September, 19056, 

 19058. 



Bartramia fragilifolia C. M. 



Bolivia: vicinity of Comanche, August, 19524. 



Philonotis fragilicaulis sp. nov. 



Flowers and fruit not known ; plants in compact cushions with 

 slender, branching stems, mostly denuded of leaves in the lower 

 part and without radicles, 3-4 dm. long and 0.25 mm. in diameter, 

 having a large well-defined central strand and often rough surface 

 in the older parts from the large, mamillose-inflated outer cells; 

 leaves nearly erect and loosely imbricate-incurved when dry, 

 scarcely spreading when moist, ovate-pointed, about 1.5 mm. 

 long and 0.75 mm. wide, the margins fiat, serrulate in the upper 

 part, sometimes crenulate nearly to the base; costa stout, rough 

 on the back in the upper half, excurrent into a serrulate, short or 

 somewhat elongate and subulate point; cells of leaf on the under 

 surface, more especially the median cells, mamillose-inflated at 

 the base, those of the upper leaf mostly somewhat elongate, more 

 or less quadratic, the median 8-12 ^ wide and 20-30 yu long, the 

 basal rather larger and more rectangular. 



Peru: Araranca, 4260 m. alt., August, 195 13. 



PoGOXATUM polycarpum (Schimp.) Broth. 

 Peru: Juliaca, September, 19100. 



Hedwigidium imberbe (Sw.) Bry. Eur. 

 Bolivia: vicinity of Comanche, 18883. 



Fabroxia axdixa Mitt. 



Bolivia: vicinity of La Paz, August, 18857, 1887 1; Comanche, 

 August, 19515- 

 Leskea gracillima Tayl. 



Peru: Cuzco, September, 19059, 19530. 



One specimen (No. 18603b) is not determined. It is possibly a 

 small Pohlia, but lacks fruit and may belong elscA^-here. 



