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Mycologia 



been asked to look up the type specimen of P. excurrens at Kew 

 so that it might be compared with specimens called T. serpens 

 in America. This she has very kindly done and I have been 

 allowed to get a glimpse of it. 



Polyporus excurrens Berk. & Curt, is only a very thin, old, 

 shabby, entirely resupinate form of Trametes rigida Berk. & 

 Mont., described in 1849 an d later known as Polystictus extensus 

 Cooke, Polystictus rig ens Sacc. & Cub., Coriolopsis rigida (Berk. 

 & Mont.) Murrill, and perhaps by other names. This is why I 

 did not find it at Kew, where it is now marked "Polyporus ex- 

 tensus B. & C, Cuba, Curtis {Wright 391)." 



This leaves our American "Trametes serpens" without a 

 name. To those who think it sufficiently distinct from Elmeriana 

 setulosa (P. Henn.) Bres., of the Philippine Islands, to deserve a 

 separate name, I would suggest Trametes subserpens. 



W. A. Murrill. 



A Correction 



In the article on " Some Described Species of Poria," pub- 

 lished in Mycologia for September, 191 9, the attempt to make 

 Saccardo's classification prominent and reference to his work 

 easy led to an error in citation, since many of the species in- 

 cluded had already been transferred to the genus Poria by Cooke 

 two years previously and Saccardo simply followed his treatment. 

 The correct citations for the first combinations of these species, 

 taken in order, would therefore be as follows : 



Porta incrustans (Berk. & Curt.) Cooke, Grevillea 14: 114. 1886. 



Poria elachista (Berk.) Cooke, Grevillea 14: 109. 1886. 



Poria Salviae (Berk. & Curt.) Cooke, Grevillea 14: 112. 1886. 



Poria candidissima (Schw.) Cooke, Grevillea 14: 111. 1886. 



Poria calcea (Schw.) Cooke, Grevillea 14: 114. 1886. 



Poria interna, (Schw.) Cooke, Grevillea 14: 109. 1886. 



Poria xantholoma (Schw.) Cooke, Grevillea 14: 113. 1886. 



Poria limitata (Berk. & Curt.) Cooke, Grevillea 14: 113. 1886. 



Poria tenuis (Schw.) Cooke, Grevillea 14: 114. 1886. 



Poria Sassafras' (Schw.) Cooke, Grevillea 14: 109. 1886. 



Poria Alabamae (Berk. & Cooke) Cooke, Grevillea 14: 113. 1886. 



Poria pulchella (Schw.) Cooke, Grevillea 14: 113. 1886. 



Poria Caryae (Schw.) Cooke, Grevillea 14: hi, 1886. 



Poria dryina (Berk. & Cooke) Cooke, Grevillea 14: 112. 1886. 



Poria fatiscens (Berk. & Rav.) Cooke, Grevillea 14: 114. 1886. 



