1918] 
BURT—THELEPHORACEAE OF NORTH AMERICA. IX 203 
14. A. Weirii Burt, n. sp. 
Type: in Burt Herb. 
Fructification resupinate, broadly effused, adnate, glabrous, 
becoming eracked into small polygonal masses, drying car- 
tridge-buff, the margin thinning out; in structure 200-900 p 
thick, composed of thin-walled, irregu- 
£ lar, hyaline hyphae 2 y in diameter, 
Ji „ҮС: “Ss which bear laterally here and there 
| short, erect branches with ovoid body 
154—4] и, from which radiate 6-12 
prongs, each 4—41 д long, and constitute 
| the paraphyses at surface of the 
E hymenium; basidia with sterigmata not 
Cockroach-shaped , Parar found; spores hyaline, minutely echinu- 
physes, o; somewhat simi- late, subglobose, 65-6 шіп one speci- 
шы ; us di men, 10-12x:9-103 џ in another. 
"prr gaan Лг. е Fructification 1-3 em. long, 1-2 cm. 
broad on bark; 8-10 em. long, 2-3 em. 
broad on decorticated wood—broken off at one end and along 
one side in the latter specimens. 
On rotting wood of Abies grandis and Thuja plicata and on 
bark of Larix occidentalis. Idaho and British Columbia. 
August and September. 
А. Weir has the aspect of a widely effused Corticium, but 
it is distinguished from any Corticium of similar aspect by 
the minutely echinulate spores; the cockroach-shaped para- 
physes distinguish this species from other species of Aleuro- 
discus. 
Specimens examined: 
Idaho: Priest River, J. В. Weir, 70, type, and 389 (the latter 
in Mo. Bot. Gard. Herb., 12249). 
British Columbia: Kootenai Mts., near Salmo, J. R. Weir, 
459, 490 (in Mo. Bot. Gard. Herb., 8768 and 21980 re- 
spectively). 
AMT 
(To be continued.) 
