WILLIAMS: PERUVIAN MOSSES 333 
and extending about three fourths up the leaf or shorter and 
dividing into two to five branches; leaf-cells all elongate, prosen- 
chymatose and mostly slightly sinuous, with rather thin walls, 
the median 5—6 u wide and 40-60 y long, the alar usually forming a 
distinct cluster of broad, short cells either greenish or finally 
reddish-brown; fruit not found. (PLATE 18, FIGS. 7-12. 
A variety evidently of the above, growing in flowing water, 
has elongate, hispid, wiry stems, 10-15 cm. long, without leaves 
below and in habit like H. Bestii, except much more slender. 
Cuzco, on wet rock, 3,500 m., July, 1911, Foote 37 (type) ; 
Ollantaytambo, about 3,000 m., on rock under spring, May, 1915, 
Cook & Gilbert 666 (the variety). 
CTENIDIUM MALACODES Mitt. 
Ollantaytambo, about 3,000 m., on trunks, May, 1915, Cook & 
Gilbert 762b. 
MItrENOTHAMNIUM ANDICOLA (Hook.) Card. 
Ollantaytambo, about 3,000 m., on trunks, May, 1915, Cook & 
Gilbert 762. 
MITTENOTHAMNIUM OXYSTEGUM (Spruce) Card. 
Santa Ana, on rock, 912 m., August, 1911, Foote 38. 
Hypnum Scurepert Willd. 
Ollantaytambo, about 3,000 m., May, 
48a. 
1915, Cook & Gilbert 
EcrroporHEecium AERUGINOsUM (C. Miill.) Mitt. 
Santa Ana, 912 m., on dead wood, August, T91!, Foote 39- 
PALAMOCLADIUM LESKEOIDES (Hook.) E. G. Britton. 
San Miguel, on rock, 1,830 m., September, T9rt, Foote 40. 
BRACHYTHECIUM ASPERULUM (Hampe) Jaeg- 
Ollantaytambo, about 3,000 m., May, 1915, 
7530. 
BracuytTHectum FLaccum C. Miill. 
Huadquinia, on wet earth, 1,530 ™., August, 1911, F ete 
Ollantaytambo, about 3,000 m., on trunks, May, 1915, 00 
Gilbert 762c. 
BRACHYTHECIUM SERICEOVIRENS (C. Mill.) Par. eas 
Ollantaytambo, on rock, 2,750 -, J uly, 1911, Poole 42. “© 
Previously only from Patagonia. 
Cook & Gilbert 
