MURRILL : POLYPORACEAE OF NORTH AMERICA 653 



" Pileo stuppeo-coriaceo effuso-reflexo, pilis subtilibus erectis strigosis hirtulo, pri- 

 mitus azono, demum versus marginem obsolete et concolori-sulcato, contextn albido, 

 poris mediis rotundis angulatisque helvelo-pallidis, demum fuscescentibus." 



The types are poorly preserved and difficult to distinguish 

 from old plants of C. nigromarginatus or Coriolopsis occidentalis. 



23. Coriolus tener (Lev.) 

 Polyporus tener Lev. Ann. Sci. Nat. Bot. III. 5: 139. 1846. 



Described from plants collected on trunks in Guadeloupe by 

 L'Herminier as follows : 



" Pileo coriaceo reflexo membranaceo sessili orbicular! zonato hirsuto albo, margine 

 ancipiti subtus sterili. poris hexagonisore acutis intus extusque alutaceis, contextu albo." 



" Chapeau quelquefois resupine, mais le plus ordinairement reflechi, large de 2 ou 

 3 centimetres, membraneux, flexible, a surface blanche, tomenteuse ; pores d'un jaune 

 tendre." 



The types are at Paris. Very little is known of the species, 

 though it appears distinct. 



24. Coriolus biformis (Kl.) Pat. 



Polyporus biformis Kl. Linnaea 8 : 486. 1833. 

 Polyporus molliusculus Berk. Lond. Jour. Bot. 6: 320. 1847. 

 Polyporus carolinensis Berk. Hook. Jour. Bot. I : 102. 1849. 

 Polyporus cJiartaceus Berk. Hook. Jour. Bot. I : 103. 1849. 



— Grevillea I : 53. 1872. 

 Coriolus biformis Pat. Tax. Hymen. 94. 1900. 



Originally described from specimens collected by Dr. Richard- 

 son on birch in North America as follows : 



" Pileo effuso-reflexo coriaceo villoso candido zonato, poris mediis dentatis albidis. 

 Imbricatus. Pileus 2-4 unc. latus, 1-2 unc. longus. Pori irregulares, interdum fusco- 

 violascentes." 



Polyporus molliusculus was described from Lea's collections in 

 Ohio, P. carolinensis from plants collected by Curtis on oak and 

 Liquidambar in South Carolina and P. chartaceus from specimens 

 found by Curtis in North Carolina on the under side of fallen 

 trunks and branches of Liriodendron. According to Berkeley and 

 Curtis, Irpex epipliylla Schw. is also a synonym. 



This species is common, widely distributed and conspicuous 

 on various forms of dead deciduous wood throughout North 

 America, being usually referred to by collectors under its earliest 

 name, with P. carolinensis and P. chartaceus as synonyms. P. 



