1920] 
BURT—THELEPHORACEAE OF NORTH AMERICA. XII 145 
Thelephora sanguinolenta Alb. & Schw. in Fries, Syst. Myc. 
1: 440. 1821; Elenchus Fung. 1: 178. 1828.—Stereum bal- 
sameum Peck, N. Y. State Mus. Rept. 27: 99. 1875; ibid. 
30: 75. 1879; Saec. Syll. Fung. 6: 584. 1888; Massee, Linn. 
Soc. Bot. Jour. 27: 196. 1890.—S. balsameum form reflexum 
Peck, N. Y. State Mus. Rept. 47: 152. 1894.—S. rigens Kars- 
ten, Finska Vet.-Soc. Bidrag Natur och Folk 37: 243. 1882; 
ibid. 48: 396. 1889; Sacc. Syll. Fung. 11:121. 1895. 
Illustrations: Gillet, Hymenomycetes; Greville, Crypt. Fl. 4: 
pl. 225; Istvanffi, Jahrbüch. f. wiss. Bot. 29: pl. 4. f. 7-10; 
Klotzsch in Dietrich, Fl. Reg. Borussici, pl. 381; Nees, Syst. 
2nd ed. pl. 28. f. 1-3; Patouillard, Tab. Anal. f. 28. 
Fructifications coriaceous, thin, effused, and reflexed, with 
upper surface villose to silky and the hairs appressed and some- 
what radiately arranged, dry- 
ing pinkish buff to pale olive- 
buff, the margin thin; hy- 
menium glabrous, bleeding 
where wounded, contracting 
in drying and cracking to the 
substratum in the resupinate 
portion, drying avellaneous Fig. 20. S. sanguinolentum. Section 
to wood-brown; in structure of hymenial region X 68, showing distribu- 
400-600 u thick, with inter-  tionof conducting organs; spores, s, X 488. 
mediate layer bordered on 
the upper side by a narrow, dense golden zone, and composed 
of densely arranged hyaline hyphae 3 u in diameter and of 
colored conducting organs 3-4 y in diameter which curve into the 
hymenium and are usually numerous there; no cystidia; spores 
white in spore collection, even, slightly curved, 6—7 X 21 y. 
Resupinate portions 1-5 cm. in diameter, reflexed margins 
2-10 mm. broad. 
On stumps and logs of Pinus, Abies, and Tsuga. Ontario to 
Pennsylvania and westward to British Columbia and California. 
July to March. Frequent. 
S. sanguinolentum is commonly resupinate or barely reflexed, 
so that it is best recognized by its occurrence on conifers and 
bleeding of the hymenium where wounded, or becoming merely 
red-discolored along the edges of the wound if the wound is 
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