1920] 
BURT—THELEPHORACEAE OF NORTH AMERICA. XII 141 
California: I. M. Johnston, comm. by C. G. Lloyd, part of type 
of Stereum occidentale (in Mo. Bot. Gard. Herb., 56762); 
Alameda Co., L. S. Smith, Univ. Calif. Herb., 403 (in Mo. 
Bot. Gard. Herb., 44150); Preston's Ravine, Palo Alto, W. 
A. Murrill & L. S. Abrams, 1190, comm. by N. Y. Bot. 
Gard. Herb. (in Mo. Bot. Gard. Herb., 55711); Redwood 
Park, W. H. Long, 12604 (in Mo. Bot. Gard. Herb., 55100); 
Santa Barbara, O. M. Oleson, 7, 15. 
Arizona: C. G. Pringle, comm. by W. G. Farlow. 
Mexico: San Luis Potosi, comm. by U. S. Dept. Agr. Herb. 
39. S. australe Lloyd, Myc. Writ. 4. Letter 48: 10. 1913; 
and ibid. Letter 60:15. 1916. Plate 4, fig. 37. 
An Thelephora mytilina Fries, Elenchus Fung. 1: 175. 1828? 
Type: in Lloyd Herb. and Mo. Bot. Gard. Herb. 
Fructification coriaceous, attached by the resupinate side and 
umbo, broadly reflexed, sometimes laterally confluent, densely 
tomentose, becoming concentrically furrowed and very rarely 
glabrous and showing the shining chestnut surface of the pileus 
in one or more of the furrows, the margin entire, sometimes 
becoming blackish; hymenium even, glabrous, drab-gray to avel- 
laneous, becoming red-discolored where cut or bruised, and 
sometimes bleeding; in structure 900 y thick, composed of dense- 
ly, longitudinally arranged hyphae, among which are a few col- 
ored conducting organs 33-42 u in diameter which curve into the 
hymenium between the basidia; no cystidia nor gloeocystidia 
present; spores hyaline, even, "e on one side, 4-43 X 22-3 y, 
few found. 
Fructifications with resupinate portion 1-3 em. broad, reflexed 
portion 1-4 cm. broad, 1-5 em. long and sometimes more by 
lateral confluence. 
On hardwood logs. Florida and Mississippi to Brazil. Au- 
gust to December in the north and in July in Brazil. Appar- 
ently rare. 
Stereum australe combines the characters of S. fasciatum and 
S. gausapatum. Its general aspect resembles that of specimens 
of S. fasciatum in a middle period of development when they are 
effuso-reflexed and have the umbo developed, but the specimens 
of S. australe have a broader resupinate portion than those of S. 
