1919] 



BURT — THELEPHORACEAE OF NORTH AMERICA. XI 



257 



portions being separated from the substratum, but they are not 

 adnate, for upon moistening the fructification small portions 

 large enough for preparation under a cover glass may be lifted 

 from the substratum with the point of a scalpel. 



It seems probable that Corticium incarnatum var. pinicolum 

 Tul. must have been either the present species or T. Eichleriana, 

 on account of the subglobose spores which the Tulasnes figured, 

 although unfortunately without stating spore dimensions or 

 scale of magnification of their figures. 



Von Hohnel & Litschauer have published 1 that Corticium 

 roseolum Karst. is the same species as Tulasnella Tulasnei. 

 I have studied an authentic specimen of C. roseolum communi- 

 cated to me by Karsten; this species is not distinguishable in 



°0 



a 



\ SQ 





Fig. 2. T. violea. Young basidium, y; young basidium, a, 

 forming stcrigmata; basidium, b, with nearly full-grown sterig- 

 mata; old, collapsed basidium, c, from whose sterigmata the 

 Bpores have fallen; spores, s. X 870. From specimen deter- 

 mined by Quelet. 



coloration and aspect from several sendin 



of T. Tulasnei 



T. violea), 



received from Romell and cited 



below, but it is entirely different in microscopic characters. 

 This specimen of C. roseolum agrees well with the description 

 published by Karsten; its spores are hyaline, even, 4-6 X 3-3 § n, 

 borne 4 to a basidium on very slender sterigmata of the usual 



Corticium kind; the basidia are sim 



cylindric or clavate, 



9 



the hvnhae are sometimes nodose 



and 



some are incrusted in the region of the substratum. Karsten's 

 publication of Corticium roseolum antedates that by Massee and 

 renders unnecessary Corticium subroseum Sacc. & Syd. in 

 Sacc. Syll. Fung. 14: 223. 



Fung. 14: 223. 1899. 



1 K. Akad. Wiss. Wien, Sitzungsber. 115: 1557. 1906. 



