[Vor. 7 
148 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
Hedgcock & W. H. Long, comm. by C. G. Humphrey, 2561 
(in Mo. Bot. Gard. Herb., 9438). 
42. S. sulphuratum Berkeley & Ravenel, Linn. Soc. Bot. Jour. 
10: 331. 1868; Grevillea 1:163. 1873; Sace. Syll. Fung. 6: 
566. 1888; Massee, Linn. Soc. Bot. Jour. 27: 192. 1890. 
Plate 5, fig. 41. 
Stereum ochroleucum Bresadola, Ann. Myc. 1: 91. 1903. Not 
Stereum ochroleucum Fries, Hym. Eur. 639. 1874, nor Corticium 
ochroleucum Fries, Epicr. 557. 1838. 
Type: in Kew Herb. and Curtis Herb. 
Fructifications coriaceous, stiff, effuso-reflexed, finally umbo- 
nate along the line of attachment to the substratum, and lobed, 
upper surface tomentose-hirsute, con- 
f 1) centrically furrowed, “sulphur colored" 
PDT when fresh, becoming cartridge-buff to 
AAA : : 
===> gray in the herbarium, the surface not 
=== hardened and crust-like under the hairy 
X= covering; hymenium even, glabrous, 
DS S " ^ becoming pinkish buff to dirty tilleul- 
g pinkish buff to dirty tilleu 
buff in the herbarium; in structure 200— 
Fig. 21. S. sulphuratum. 400 u thick under the hairy covering, 
Section of type X 68. The with the intermediate layer not differ- 
à uter border of intermediate ^ o (0t60 on its upper side into a dense 
ayer not a colored, crust-like ; 
Dm golden zone but hyaline throughout 
and with the longitudinally arranged 
hyphae 3-33 u in diameter, curving outward on the upper side to 
form the hirsute covering and curving downward on the under 
side to form the hymenium; no colored conducting organs, 
gloeocystidia, nor cystidia; spores hyaline, even, 6-8X 2-3 u. 
Fructifications with resupinate portion 3-2 cm. broad, 10 em. 
and more long on under side of limbs; reflexed lobes 3-13 em. 
broad, 3-23 cm. long. 
On dead limbs of Betula and other frondose species. Georgia 
to Mexico, West Indies, Venezuela, and Brazil. September to 
January. Not common. 
In growing condition, the sulphur color attributed to speci- 
mens of S. sulphuratum and the heavy, hirsute covering of the 
pilei, taken in connection with geographic range wholly south 
(a) 
