1920] 



BURT THELEPHORACEAE OF NORTH AMERICA. XII 



145 



Thelephora sanguinolenta Alb. & Schw. in Fries, Syst. Myc. 

 i: 440. 1821; Elenchus Fung, i: 178. 1828. Stereum bal- 

 sameum Peck, N. Y. State Mus. Rept. 27: 99. 1875; ibid. 

 30: 75. 1879; Sacc. Syll. Fung. 6: 584. 1888; Massee, Linn. 

 Soc. Bot. Jour. 27: 196. 1890. S. balsameum form refiexum 

 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: 

 pi. 225; Istvanffi, Jahrbuch. f. wiss. Bot. 29: pi. 4. f. 7-10; 

 Klotzsch in Dietrich, Fl. Reg. Borussici, pi. 381; Nees, Syst. 

 2nd ed. pi. 28. f. 1-3; Patouillard, Tab. Anal./. 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- |ja||||l 

 menium glabrous, bleeding Jp 

 where wounded, contracting jf/ji 

 in drying and cracking to the 

 substratum in the resupinate 

 portion, drying avellaneous 

 to wood-brown; in structure 

 400-600 m thick, with inter- 

 mediate layer bordered on 



the upper side by a narrow, dense golden zone, and composed 

 of densely arranged hyaline hyphae 3 ju in diameter and of 

 colored conducting organs 3-4 n in diameter which curve into the 

 hymenium and are usually numerous there; no cystidia; spores 

 white in spore collection, even, slightly curved, 6-7 X2 ju. 



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 



Fig. 20. S. sanguinolentum. Section 

 of hymenial region X 68, showing distribu- 

 tion of conducting organs; spores, s, X 488. 



