1920] 
BURT—THELEPHORACEAE OF NORTH AMERICA. XII 99 
(in Mo. Bot. Gard. Herb., 8407); Geddes, G. E. Morris, G; 
Ithaca, C. Thom (in Cornell Univ. Herb., 9992); Jamesville, 
H. D. House (in N. Y. State Mus. Herb. and in Mo. Bot. 
Gard. Herb., 55498), and L. M. Underwood; Lowville, 
C. H. Peck (in N. Y. State Mus. Herb.); Orville, G. E. 
Morris, G. 
Ohio: Gnaddenhutte, Schweinitz, type (in Herb. Schweinitz 
and in Curtis Herb.). 
Missouri: Valley Park, E. A. Burt & L. O. Overholts (in Mo. 
Bot. Gard. Herb., 44059). 
Alabama: Montgomery, R. P. Burke, 25 (in Mo. Bot. Gard. 
Herb., 13146.). 
Washington: Seattle, W. A. Murrill, 128, 143, 144 (in N. Y. 
Bot. Gard. Herb. and Mo. Bot. Gard. Herb., 55745, 55729, 
55726). 
California: Tamalpais, H. W. Harkness (under the herbarium 
name Thelephora Harknessw Peck in N. Y. State Mus. 
Herb. and Mo. Bot. Gard. Herb., 55925). 
11. S. exiguum (Peck) Burt, n. comb. Plate 2, fig. 10. 
Thelephora exigua Peck, N. Y. State Mus. Bul. 54: 953. 1902; 
Sacc. Syll. Fung. 17:161. 1905. 
Type: in N. Y. State Mus. Herb. and in Burt Herb. 
Pileus coriaceous-membranaceous, very thin, diaphanous, 
infundibuliform, radiately fibrous-striate, becoming bister in the 
herbarium, originally “pale alutaceous" according to Peck, the 
margin lacerate; stem slender, solid, pruinose, and bearing a 
few whitish hairs which are present also on the ground about the 
base; pileus in section 100 y thick, composed of longitudinally 
arranged, hyaline hyphae 22-3 u in diameter, closely crowded 
together; cystidia hair-like, not incrusted, cylindric, obtuse, 
7 u in diameter, protruding 25 & beyond the basidia; spores 
hyaline, even, 4$ X2 u, borne 4 to a basidium. 
Fructifications 1-3 mm. in diameter, 3-5 mm. high; stem 2 
mm. long, 1-j mm. in diameter; pileus 4; mm. thick. 
On the ground, Westport, New York. October. 
S. exiguum is miniature S. diaphanum of slightly darker 
color. It is known from the original collection only. The 
smallest specimens of S. diaphanum are many times larger than 
