﻿394 Williams: Mosses from west coast of South America 



section showing 2 large guide cells, a rather small stereid band 

 betw^een them and the row of large cells next the upper surface, and 

 below the guide cells a much larger stereid band with outer cells 

 somewhat enlarged; cells in lower part of leaf pale, smooth, 

 mostly short-rectangular, about 8 /x wide by 12 n long, in upper 

 part densely papillose, rather distinct, nearly square, about 6 X 

 6 m; perichaetial leaves scarcely differentiated ; seta often somewhat 

 bent and twisted when dry, erect when moist, about 2.5 mm. long; 

 capsule oblong, slightly wrinkled when dry, about i mm. long, 

 including the short, obHque beak; spores rough, about 16^1 in 

 diameter; calyptra cucullate, smooth, descending about half way 

 down the capsule. 



Chile: vicinity of La Serena, October, igzgo. 

 Gyroweisia boliviana R. S. Williams, Bull. N. Y. Bot. Card. 3: 



104. 1903. 



Peru: Cuzco, September, 19057. 

 Leptodontium gracile cm. 



Peru: vicinity of Lima, July, 18594. 

 Barbula fuscinervia Mitt. 



Peru: Juliaca, September, 19092. 

 Barbula fusco-viridis Broth. 



Chile: Palos Quemnados, October, ipi^'^; La Ligua, October, 

 19532- 

 Barbula replicata Tayl. 



Peru: near Oroya, July, 18717; Arequipa, July, 1953 1; 

 Posco, July, 18813; Cuzco, August, 19055. 

 Pterogoneurum Roseae sp. nov. 



Autoicous, the male flower terminal, the outer perigonial 

 leaves not differentiated, the inner with a very small, pale-golden, 

 roundish, scarcely costate blade bearing a rough, hyaline hair- 

 point 3 or 4 times as long, enclosing 5 or 6 antheridia about 50 11 

 long and numerous, somewhat club-shaped paraphyses twice as 

 long as the antheridia: plants appearing somewhat gregarious, only 

 2-2, mm. high, with very short stems and crowded, bud-like 

 branches; stem leaves when dry, erect, appressed-imbricate, when 

 moist, widely spreading, broadly ovate, serrulate nearly to the 

 base, the blade about i mm. long with a rough, hyaline hair-point 

 often exceeding the blade in length, the margins of the upper half of 

 the blade broadly inflexed over the costa; costa expanded in the 

 upper half, in cross-section showing a broad stereid band below 



