[Vor. 3 
212 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
hymenium even or granular; in structure 400-500,» thick, com- 
posed (1) next to the substratum of a few dark-colored, 
longitudinally arranged, nodose-septate hyphae 
4-414» in diameter, and (2) towards Ше hymen- 
ium of pale, thin and even-walled hyphae about 
22—34 in diameter, suberect, very loosely inter- 
woven, which arise as lateral branches from the 
dark basal hyphae and bear База and eystidia; 
eystidia septate, cylindric, obtuse, even-walled, 
Saccardo’s umber in color under the microscope, 
4175-ӛр in diameter, emerging up to 80-1004; basi- 
dia 4-spored with the spores on slender sterig- 
mata about Dn long; spores Saceardo's umber un- 
der the microscope, globose, tuberculate, spore 
body 6-7» in diameter. 
Fructification usually 1-2 em. long, 15-1 em. 
+ Fig. В broad, one specimen 4 cm. long. 
. eanaden- ° i 
a Cystid. On wood and bark of conifers decaying on the 
5” forest floor. Canada апа New Hampshire to Ida- 
ho and British Columbia. August to November. 
Н. canadensis is a little darker in color than H. ferrugineus 
and is smaller and less conspicuous in the few collections 
which have been made. It differs from our other rust- 
colored species of Hypochnus in having eystidia. It is re- 
lated to the European Hypochnus ferruginosus (v. Hohn. 
& Litsch.) Burt, n. comb., = Tomentellina ferruginosa v. 
Hohn. & Litsch, by the colored, eylindrie eystidia, but the 
cystidia of our species are shorter and its hyphae finer, 
darker, and nodose-septate next to the substratum. 
Specimens examined: 
Canada: locality not stated, J. Macoun, 11. 
Quebec: Ironsides, J. Macoun, 277b. 
New Hampshire: Chocorua, W. G. Farlow, 2, and c4 (the 
latter in Mo. Bot. Gard. Herb., 44039). 
Vermont: Middlebury, E. A. Burt, type. 
Michigan: Ann Arbor, C. H. Kaufman, 36. 
Idaho: Priest River, J. R. Weir, 1. 
British Columbia: Kootenai Mountains, near Salmo, J. R. 
Weir, 504 (in Mo. Bot. Gard. Herb.). 
