[Vor. 1 
128 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
т, Е. scutellatus Schw. ex Cooke, Grevillea 14: 19. 1885. 
Polyporus scutellatus Schw. 'Trans. Am. Phil. Soc. II. 4: 157. 
1832. 
Plants perennial, sessile, often attached by the apex of the 
pileus; pileus dimidiate or circular, convex, 0.5-1.5 x 0.5-2 x 
0.1-0.5 em., corky when fresh, hard and woody when dry, dark 
brown or black at least when mature, velvety, azonate or some- 
what concentrically sulcate, margin rather thick, acute; context 
white to wood-colored, corky, not more than 2 mm. thick; tubes 
1-2 mm. long, indistinctly stratified, the mouths white to umber, 
circular or subcircular, averaging 4—5 to а mm. 
Chiefly on dead limbs of Alnus and Hamamelis. Rare. 
This species is distinguished from F. ohiensis Berk. ex Murrill 
by the habitat and the black surface of the entire pileus including 
the margin. Specimens have been received from Mr. Claassen, 
Cleveland, Ohio. 
2. F. ohiensis Berk. ex Murrill, Bull. Torr. Bot. Club 30: 
230. 1908. 
Trametes ohiensis Berk. Grevillea 1: 66. 1872. 
Plants perennial, sessile, often attached by the vertex of the 
pileus; pileus dimidiate or shield-shaped, convex to ungulate, 
0.5-3 x 0.5-4 x 0.2-1 cm., soft-corky when fresh, hard and 
woody when dry, at first pure white but becoming cinereous or 
yellowish and often black at the base but the margin remaining 
white, finely tomentose to glabrous, often zonate or concen- 
trically suleate, margin rather thick, acute or obtuse; context 
white to wood-colored, soft-corky to woody, 1-3 mm. thick; 
tubes 1-5 mm. long, often arranged in more or less definite rows, 
indistinctly stratified in two to six layers, the mouths white, 
circular, averaging 3-5 to a mm., the dissepiments almost as 
thick as the diameter of the pores. 
On dead wood of deciduous trees, especially on structural 
timber. Common. 
By its small size this species is separated from all perennial 
forms except F. scutellatus Schw. ex Cooke. It differs from that 
species in habitat and in the margin of the pileus always remain- 
ing white. 
