328 WILLIAMS: PERUVIAN MOSSES 
cells of the stem-leaves much smaller, with thinner, scarcely 
sinuous walls and the inner perichaetial leaves have much longer, 
narrower cells throughout the lower leaf. 
RHACOMITRIUM CRISPIPILUM (Tayl.) Jacq. 
Lucumayo Valley, 3,000 m., June, 1915, Cook & Gilbert 1264. 
FUNARIA CALVESCENS Schwaegr. 
Ollantaytambo, about 3,000 m., on wet soil, May, Cook & 
Gilbert 669; Manchu Picchu, about 2,100 m., May, Cook & Gil- 
bert 9006. 
MIELICHHOFERIA ANDINA Sull. 
Araranca, south side of La Roya Pass, about 4,100 m., on 
earth wall, April, 191 5, Cook & Gilbert 182a. 
MIELICHHOFERIA BOGOTENSIS Hampe. 
Ollantaytambo, about 3,000 m., May, 1915, Cook & Gilbert 705. 
LEPTOBRYUM WILSONI (Mitt.) Broth. 
Arequipa, on wet rock, 2,300 m., June, 1911, Foote 9. 
ANOMOBRYUM FILIFORME (Dicks.) Husn. 
Santa Rosa, on dry hillside, 3,960 m., July, 1911, Foote 10. 
BRYUM ANDICOLA Hook. 
Above San Miguel, on rocks, 1,830 m., September, 1911, 
Foote rr. 
BRYUM ARGENTEUM L. 
Cuzco, on dry rock, 3,500 m., 1911, Foote 12; Ollantaytambo, 
on soil, about 3,000 m., May, 1915, Cook & Gilbert 610. 
Bryum biforme Sp. nov. 
Pseudoautoicous, the male plants minute, 1-2 mm. high, 
attached by radicles to the tomentum of the fertile stems, each 
often bearing at the apex abundant, filiform flagella, 3-4 a 
long and covered with minute scale-like leaves; stem-leaves widely 
spreading when moist, somewhat spreading-flexuous and twisted 
when dry, serrulate above, rather broadly ovate, acute, slightly 
decurrent, 3-3-5 mm. long, the margins flat above, recurved bs 
with a border of elongate, narrow, pale cells most distinct hal 
