r [Vor. 7 
190 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
Colorado: Silverton, E. R. Hodson, comm. by C. J. Humphrey, 
1551; Tolland, L. O. Overholts, 1781, 2336 (in Mo. Bot. 
Gard. Herb., 56042, 56761); Yankee Doodle Lake, F. J. 
Seaver & E. Bethel (in N. Y. Bot. Gard. Herb. and Mo. Bot. 
Gard. Herb., 56729). 
Idaho: Bonanza, G. G. Hedgcock, comm. by C. J. Humphrey, 
2168 (in Mo. Bot. Gard. Herb., 10377); Coolin, J. R. Weir, 
11476 (in Mo. Bot. Gard. Herb., 56724); Leesburg, F. S. 
Wolpert, comm. by J. R. Weir, 7033 (in Mo. Bot. Gard. 
Herb., 55463); Priest River, E. E. Hubert, comm. by J. R. 
Weir, 11655 (in Mo. Bot. Gard. Herb., 56725). 
British Columbia: J. Macoun, 94, type (in N. Y. Bot. Gard. 
Herb.). 
Washington: Olympie Mts., T. C. Frye, 1 (in N. Y. Bot. Gard. 
Herb. and Mo. Bot. Gard. Herb., 56730); Seattle, W. A. 
Murrill, 130, 146 (in N. Y. Bot. Gard. Herb. and Mo. Bot. 
Gard. Herb., 56731, 56732) and J. M. Grant, 2066, comm. 
by C. G. Lloyd (in N. Y. Bot. Gard. Herb., 56728). 
Arizona: Agassiz, W. H. Long, 19445 (in Mo. Bot. Gard. Herb., 
44734); Mt. Humphrey, Flagstaff, W. H. Long, 21306- 
21308, 21810 (in Mo. Bot. Gard. Herb., 54897-54899, 
54901); Interior Basin, San Francisco Peaks, W. H. Long, 
21309, 21311 (in Mo. Bot. Gard. Herb., 54900, 54902). 
58. S. ambiguum Peck, N. Y. State Mus. Rept. 47: 145. 
1894; Sacc. Syll. Fung. 11: 122. 1895. Plate 5, fig. 57. 
Type: in N. Y. State Mus. Herb. 
Fructifications coriaceous, dry, resupinate, effused, rarely nar- 
rowly reflexed, with the upper side tomentose, Prout's brown, 
the resupinate margin often brighter colored, antique brown, 
determinate; hymenium velvety, raw umber to Saccardo's 
umber when mature and thick, becoming deeply cracked in 
drying; in structure 600-1400 y thick, with an intermediate 
layer 400-600 y broad, composed of longitudinally interwoven, 
colored hyphae 3-4 u in diameter, and with a zonate hymenial 
layer up to 800 y thick containing colored incrusted cystidia in 
all the zones; sections darkened by KHO solution; cystidia 
colored, cylindric, obtuse, usually incrusted, 100-150 7-12 p, 
protruding up to 100 y; basidiospores white in spore collection, 
