1920] 
BURT—THELEPHORACEAE OF NORTH AMERICA. XII 121 
Thelephora rufum Fries, Elenchus Fung. 1:187. 1828.— 
Cryptochaete rufa (Fries) Karsten, Finska Vet.-Soc. Bidrag 
Natur och Folk 48:408. 1889.— T'ubercularia pezizoidea 
Sehweinitz, Am. Phil. Soc. Trans. N. S. 4:301. 1832; Sacc. 
Syll. Fung. 4: 644. 1886.— Hypocrea Richardsonii Berkeley 
& Montagne, Grevillea 4: 14. 1875; Saec. Syll. Fung. 2: 528. 
1883; Ellis & Everhart, N. Am. Pyrenomycetes, 86. 1892.— 
Corticium pezizoideum (Schw.) von Schrenk, Torr. Bot. Club 
Bul.21:385. pl.218. 1894. 
Illustrations: von Schrenk, Torr. Bot. Club Bul. 21: pl. 218. 
1894 
Type: in Herb. Fries. 
Fruetifieations scattered or gregarious, coriaceous-fleshy, 
bursting out from the bark, verruciform, plicate-tuberculose, 
Fig. 11. S. rufum. Fructifications, " section of fructification, m; section of 
hymenial region, n; spores, s. After von Schren 
peltate, vinaceous-brown to hematite-red, under side glabrous, 
the margin free all around; Coe m becoming coarsely 
wrinkled, vinaceous-brown, dien grayish pruinose; in structure 
1-2 mm. thick at the center, 600-800 uy thick in the marginal 
portion, composed of ascending, loosely interwoven, incrusted, 
hyaline hyphae 4-43 „in diameter over the incrustation ; flexuous 
gloeocystidia 50-90 x 7-10 y are scattered in or near the hymeni- 
um but not protruding; spores white in spore collection, even, 
curved, 6-8 X 13-2 ,. 
Me inostións 2-4 mm. in diameter. 
On dead fallen Populus tremuloides. Newfoundland to Mass- 
achusetts and westward to North Dakota and Colorado. 
March to December. Common. Occurs in Scandinavia also. 
