[Vol. 4 

 250 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



4: 168. 1832; Fries, Elenchus Fung. 1 : 198. 1S28. — Odontia 

 sistotremoides (Schw.) Fries, Epicr. 529. 1838. 



Type: a fragment in Herb. Schweinitz and portions in 

 Herb. Fries and in Kew Herb, probably. 



Effused, papery, papillate, sulpliur-cinereous, 

 ^ Q the margin byssoid and white ; papillae minute, 

 O (p pilose. 



Fig. 7 Broadly effused here and there on wood. Pa- 



c. sistotre- pillae abnormal, minute, occurring in the hy- 



Spores X 665 J^^iiium in scattered distant clusters, with the 



form in all respects of the teeth of Sistotrema and 



clothed with hairs as in T. hotryoides. 



— Translation of original description. 



The portion of the type in Herb. Schweinitz is very small 

 and not well preserved. I found its spores Saccardo's mel- 

 leus, even, 8 X 3-4 n, and hyphae of the same color, but did 

 not detect scattered, clustered granules in the hymenial sur- 

 face. The portion preserved may, however, have been from 

 the even region between the clustered granules. Fries re- 

 ceived a specimen of C. sistotremoides from Schweinitz and 

 in 'Epicrisis' transferred this species to Odontia, placing it 

 next to Odontia fimbriata and describing the granules as wart- 

 like, minute, dentiform, with apex concolorous and fimbriate. 



I have been on the lookout for a Coniophora which com- 

 bines in one specimen both the granular surface described by 

 Schweinitz and Fries and the spore characters of the authen- 

 tic specimen but have not yet found it. Coniophora olivascens 

 has a granular surface to its fructification, but its spores are 

 smaller than those of C. sistotremoides, more subglobose in 

 form, and its hyphae are hyaline. Schweinitz 's statement that 

 the papillae are clothed with hairs as in his Hypochnus hotry- 

 oides is important in showing that he refers to a surface com- 

 posed of matted hyphae as seen with a lens in the case of 

 Hypochnus hotryoides and not necessarily to the presence of 

 hair-like cystidia protruding from the granules in sections, 

 although Fries must have had the latter type of structure in 

 mind to lead him to place this species in Odontia between 

 0. Barha Jovis and 0. fimhriata. 



