( 128 ) 
costa vanishing in apex; leaf-cells scarcely elongated, often 
extending nearly to base: seta scarcely 4 mm. long; capsule 
narrowly oblong, with sporangium about 1.25 mm. long and 
collum one half as long; peristome of 8 cilia; lid and calyp- 
tra not seen: spores roughish, up to 16 # in diameter. 
Hills near Mollendo, 540 meters, on bushes, August 5, 
1901 (2887). 
ZyGopvon PERvuVIANUS Sull. 
Pelichuco, 3450 meters, May 4, 1902 (2861). 
Zycopon Anpinus Mitt. 
Pelichuco, 3000 meters, April 30, 1902 (2875); Cargadira, 
2400 meters, on trees, July 30, 1902 (1874); Santa Cruz, 
1500 meters, on trees, August 24, 1902 (1872); near Apolo, 
1650 meters, July 25, 1902 (1873). These specimens have 
leaves denticulate above, 8 cilia and flowers mostly autoi- 
cous, sometimes synoicous. 
ZYGODON SUBDENTICULATUS Hampe. 
Ingenio, 2700 meters, on bushes, September 27, 1902 
(1715). 
ZYGODON LINGUIFORMIs C. Mill. 
Santa Cruz, 1650 meters, on trees, August 25, 1902 
(1871); Pelichuco river, 2100 meters, April 29, 1902 (2865). 
ORTHOTRICHUM PATULUM Mitt. 
Sorata, 2700 meters, September 3, 1901 (1833). The only 
species with immersed stomata collected. The exothecal 
cells are mostly very thin-walled and short-rectangular, up 
to about 204 wide and 30-35 4 long; lid and calyptra not 
seen. Determined from description only. 
ORTHOTRICHUM ELONGATUM Tayl. 
Pelichuco, 3600 meters, on bushes, May 5, 1902 (2812), 
Sorata, 2700 meters, September 27, 1902 (1841); Tacacoma, 
3000 meters; June 10, 1902 (1832). 
ORTHOTRICHUM PARIATUM Mitt. 
Above Sorata, 2700 meters, September 8, 1901 (1834). 
Orthotrichum epilosum sp. nov. 
Monoicous. Plants in more or less loose tufts with branch- 
ing stems up to 4-5 cm. high; leaves somewhat spreading 
