(254) 
and broader capsule; agnatum has a longer pointed leaf and 
broader capsule, with exothecal cells nearly square and walls 
greatly thickened at the angles. 
SEMATOPHYLLUM CHRySOsTEGUM (C. M.) Mitt. 
Sorata, 2450 meters, on trees, June 3, 1902 (2024). 
SEMATOPHYLLUM CIRCINALE (Hampe) Mitt. 
Near Aten, 1400 meters, on tree, July 27, 1902 (2023). 
Achiquiri, 950 meters, on decayed log, June 17, 1902 (2948). 
Apolo, 1500 meters, at base of tree, Feb. 24, Ig02 (2132). 
Tumupasa, 430 meters, Jan. 29, 1902, on tree (2060). 
SEMATOPHYLLUM OBLIQUIROSTRATUM Mitt. 
San José to Apolo trail, 1400 meters, Feb. 10, 1902 (2108). 
SEMATOPHYLLUM PROMINULUM Mitt. 
San Juan, 960 meters, on rocks, March 21, 1902 (2025). 
The leaves of these specimens seem to be quite smooth on the 
back as is evidently the case with the type specimen in the 
Mitten herbarium. 
SEMATOPHYLLUM SUBSIMPLEX (Hedw.) Mitt. 
Tumupasa, 430 meters, at base of tree, Jan. 19, 1902 
(2079). Tumupasa, on decayed log, Jan. 14, rg02 (2084). 
Between Rio Cocos and Rio Lanca, March 26, 1902 (2026). 
Between Ixiamas and Tumupasa, Dec. 20, 1901 (2076). 
Achiquiri, near Mapiri, 1000 meters, on decayed log, June 
17, 1902 (2027). This species is of a rather pale green color ; 
the exothecal cells are somewhat mamillose, hexagonal, with 
walls not thickened. 
MICROTHAMNIUM THELISTEGUM (C. M.) Mitt. 
Apolo, 1500 meters, on earth and rock, March g, 1902 
(2030). Tumupasa, 430 meters, on decayed log, Jan. 8, 
1902 (2031). Between Tumupasa and San José, Jan. 30, 
1902 (2034). Rio Tuichi, on decayed wood, April 7, 1902 
(2036). 
MIcROTHAMNIUM ELEGANTULUM (Flook.) Mitt. 
Near Aten, on log, 1150 meters, July 27, 1902 (2054). 
