June, 1911.] The Known Poly poraceae of Ohio. 367 



77. Globifomes graveolens (Schw.) Mtirrill, Bull. Torr. Club 



31 :424. 11)U4, 

 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 accomit 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. 



SO. Elfvingia megaloma (Lev.) Murrill, Bull. Torr. Club 30 : 300. 

 1903. 

 Polyporus megaloma Lev. 



Known as Fomes leucophaeus Mont, and incoiTectly 

 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 w^hen rubbed. 



