POLYPORUS POCULA (Fig. 777). PHOTOGRAPH BY 

 BURTT LEEPER, OHIO. We have considered this plant twice 

 (Myc. Notes, Pol. Issue, page 44, and Syn. Stip. Polyp., page 140). 



Polyporus Pocula. Photograph by Burtt Leeper. 



The illustrations we have used were made from small specimens, but 

 about the usual size. We present (Fig. 777) a fine photograph sent 

 us by Burtt Leeper of an unusually large specimen. It is very rarely, 

 we believe, that the plant reaches this size. The photograph, like all 

 that Mr. Leeper makes, is exceptionally fine. 



HYDNANGIUM RAVENELII (Fig. 778), FROM DR. R. P. 

 BURKE, ALABAMA. Hypogeal fungi, as the name indicates, grow 

 beneath the surface of the ground. 

 There are two general classes, 

 Tuberaceae, with spores in asci, 

 and Hymenogasters, with spores 

 borne on basidia. The Hymeno- 

 gasters are closely allied to "puff 

 balls," but the cells remain per- 

 manently in the ripe specimen, 

 and do not deliquesce into a 

 powdery mass as do puff balls. 

 As most Hymenogasters are hypogeal, and only found by laborious 

 search, they are scarcely known in this country. Harkness is the 

 only one who has hunted much for them. In Europe they are better 

 known, for two of the best students, Vittadini and Tulasne, searched 

 diligently for them, and wrote most magnificent works concerning 



569 



Fig. 778. 



