[Vor. 5 
202 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
line, minutely echinulate, subglobose, 15-18 и, or rarely 20 y, 
in diameter. 
Fructifications at first about 2-3 mm. in diameter, then 
laterally confluent into patches up to 10 em. long and 2 em. 
broad. 
On stem and twigs of dead standing seedling of Pseudotsuga 
taxifolia and on limbs 
of Tsuga heterophylla 
on the ground. Idaho, 
Washington, and Ore- 
gon. September and 
October. Rare. 
This species is so thin 
and widely effused that 
it is likely to be re- 
garded as a Corticium 
until examined with a 
microscope. If sought 
for especially it could 
probably be recognized 
2 ы. Po ең when collected by its 
Brush paraphyses, br; other paraphyses, p; buff color and occur- 
basidium b. X870. 
rence upon western 
Tsuga and Pseudotsuga. The minutely echinulate, globose 
spores, brush-shaped paraphyses occurring between ordi- 
nary flexuous paraphyses, and the thin fructification wholly 
destitute of crystalline and granular matter are a good 
combination of characters separating A. penicilatus from 
other resupinate species. 
Specimens examined: 
Idaho: Priest River, J. R. Weir, 109, 129 (in Mo. Bot. Gard. 
Herb., 10811 and 12721). 
Washington: Hoquiam, C. J. Humphrey, 6384; Sequim, J. M. 
Grant, comm. by Mrs. F. W. Patterson (in Mo. Bot. Gard. 
Herb., 8936). 
Oregon: Eugene, C. J. Humphrey, 6084, type. 
