Murrill: Polvporaceae of North America 87 



same time questioning whether it might not be the same as D. 

 angustata (Sow.) Fr. Schweinitz again described the thin forms 

 met with in Carolina under different names, which were much dis- 

 cussed by European mycologists. 



Fries changes one of Schweinitz's specific names to D. discolor 

 in his Elenchus, because it was preoccupied by one of his own. 

 Type plants of this species grew on birch trunk's. A little later, 

 Klotsch finds a specimen in Hooker's herbarium collected by Dr. 

 Richardson on a birch trunk in boreal North America, which he 

 determines as D. discolor Fr., but Fries disclaims it and calls it D. 

 discolor " Kl. nee Fr." Then Berkeley throws the species into 

 Lcnzilcs and names it after Klotsch. This is only the beginning 

 of Berkeley's career in connection with D. confragosa, for we 

 find him between this time and 1876 assigning four new names to 

 different specimens of this species, L. Crataegi to plants collected 

 in Ohio by Lea, L. unguliformis to specimens sent from North 

 Carolina by Curtis, L. Cookcii to Peck's specimens collected on 

 willow and birch in New York and L. proximo, to New York 

 plants collected by Sartwell. L. Lyallii Berk, from Vancouver 

 also seems to be a form of this species, but the type plants are in 

 such poor condition that it is impossible to determine this with. 

 certainty. 



A form found in Mexico by Schiede and recently duplicated 

 by Smith appears to have as much claim to distinction as any yet 

 reported, if it were only possible to separate it from thin lenzitoid 

 forms found in the Southeastern states. In describing this form in 

 185 1, as L. bicolor, Fries says that he had received the same thing 

 from Curtis in South Carolina under the name of D. tricolor. A 

 full discussion of this and several other varieties, by Peck, may be 

 found in the 30th Report of the N. Y. State Museum of Natural 

 History ; on page j$ the author summarizes the forms discussed 

 which have received specific names as follows : 



" Daedalea confragosa Pers. which is represented by forms of 

 our plant having a scabrous somewhat zoned pileus of a reddish- 

 brown color and a daedaleoid hymenium." 



" Trametes rubescens A. & S. which is represented by forms 

 that assume the ruddy color and have the trametoid hymenium." 



" Lcnzitcs Crataegi Berk, which is represented by forms having 

 a shining pileus attached by the vertex and having a trameto-len- 

 zitoid hymenium." 



