June, 1911.] 
The Known Polyporaceae of Ohio. 
3 6 7 
77. Globifomes graveolens (Schw.) Murrill, Bull. Torr. Club 
31 : 424. 1904. 
Boletus graveolens Schw. 
Known as Polyporus conglobatus Berk, and Fomes 
graveolens (Schw.) Cooke. A very peculiar fungus, forming 
an imbricated, cylindrical mass of overlapping pileoli. 
Generally found on beech logs. The color while growing is 
a rusty brown, but the old plants become black. Found in 
September and October. Not common. Commonly called 
“sweet knot” on account of its fragrant odor. The writer’s 
specimens were collected in a growing condition, but no 
odor was noticeable'. 
Illustrations: Ohio Myc. Bull. 9: f. 41; Hard, p. 405, f. 334. 
78. Elfvingia fomentaria (L.) Murrill, Bull. Torr. Club 30 : 298. 
1903. 
Boletus fomentarius L. 
Commonly known as Fomes fomentarius (L.) Fr. On 
beech and birch. Rare. 
Illustrations: Gill. Champ. Fr. pi. 467; Sow. Eng. Fungi 
pi. 133. 
79. Elfvingia lobata (Schw.) Murrill, Bull. Torr. Club 30 : 299. 
1903. 
Fomes lobatus Schw. 
Known as Fomes reniformis Morg. An annual fungus, 
which, however, frequently revives, but the second year’s 
growth comes out below that of the previous year. 
This point distinguishes it from the next species, which it 
resembles. Rather common about the bases of old stumps. 
80. Elfvingia megaloma (Lev.) Murrill, Bull. Torr. Club 30 : 300. 
1903. 
Polyporus megaloma Lev. 
Known as Fomes leucophaeus Mont, and incorrectly 
called Polyporus applanatus Pers. It is perennial and in 
point of size is perhaps the largest of all that are found in 
the state. A specimen collected at Oxford, Ohio, in June of 
1909 measures 50x30x30 cm. It frequently grows imbri- 
cated, but more often it is found single. Very common 
throughout the year on all kinds of dead deciduous logs and 
stumps, and frequently on living trees. It is generally 
found near the ground, but the writer has seen specimens on 
a living sugar tree, 40 feet above the ground. At certain 
seasons of the year the pileus is covered with the brown 
conidia which are produced on the upper surface. When 
fresh, the hymenium turns brown when rubbed. 
