native Stereums. It was named by Schweinitz, and his specimens 

 are still in existence. When fresh the plant is white, but old specimens 

 turn brownish with age. 



SPECIMENS. We have never seen this rare plant growing, but have received specimens from 

 several correspondents. 



STEREUM UNDULATUM (Fig. 535). Pileus mesopodial, 

 thin, infundibuliform, smooth, pale gray, faintly zoned when fresh. 

 Stipe short, slender, villose. Cystidia hyaline, smooth. Spores el- 

 liptical, 2x5, smooth. 

 ^ | This is the tiniest little Stereum that 



n^# A we have, and is quite rare and never has 

 been correctly known in American mycol- 

 / ogy. It occurs on the naked ground, prefer- 

 t / ably burned, it is said. In Europe it is 

 - mostly recorded from northern stations, 

 and the plant is known in the museums 

 chiefly from Karsten's Exsic. No. 912. 

 The record in England is an error of determination. Fries placed 

 it in Thelephora. It has been called Crateiellus, Merulius, Hymen- 

 ochaete, Podoscypha, Bresadolina, and could be called Lloydella on 

 the nature of its hairs. We think it is best called Stereum. As to 

 specific names, it has been named two or three times by both Peck 

 and Berkeley, as found in our synonyms. 



SPECIMENS. I have never collected this little rare species, but have seen it in Peck's museum, 

 and Karsten's Exsic. in several museums. I have a specimen from V. de Aranzadi, Spain. 



ILLUSTRATIONS. Ann. Myc., Vol. 7, p. 427. (The figure Bulliard t. 465, fig. 1, cited by Sac- 

 cardo is an error for Cantharellus crispus. It has no resemblance whatever to Stereum undulatum.) 



Fig 535 



Fig. 536 



Stereum Sowerbyi. 



Fig. 537 



Stereum Burtianum. 



STEREUM SOWERBYI (Fig. 536). Pileus ungulate, repand 

 infundibuliform. White, discoloring in drying. Stipe short, white, 

 not strongly distinct from the pileus. Inner surface fibrillose with 

 radiating fibrils. Grows in the ground, and only known from one 

 locality (Burnham Beaches), England, and not, I believe, in recent 

 years. It was illustrated (T. 155) by Sowerby as Thelephora pan- 

 nosa, and his specimens are still at Kew; but the figure, while evident, 

 is not good. When Berkeley first received the plant he referred it 

 to Thelephora laciniata Sow. t. 158, which being a duplication, he 

 changed the name to Thelephora Sowerbyi. Afterwards when he 



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