418 MURRILL : POLYPORACEAE OF NORTH AMERICA 



4. Hapalopilus gilvus (Schw.) 

 Boletus gilvus Schw. Syn. Fung. Car. 70. 1818. 

 Polyporus gilvus Fr. Elench. Fung. 104. 1828. 

 Poly poms calvcsccus Berk. Ann. Nat. Hist. 3: 390. 1839, 

 Polyporus omalopilus Mont. PI. Cell. Cuba, 423. 1842. 

 Polyporus carueofulvus Berk, in Fries, Nov. Symb. 68. 185 1. 

 Polysiictus purpureofuscus Cooke, Grevillea, 15: 24. 1886. 



Owing to the abundance and wide distribution of this species 

 in America it has figured in many collections and received several 

 different names. This renaming has been due partly to the ig- 

 norance of foreign botanists and partly to the importance which 

 varieties assume when studied apart from abundant representative 

 material. The type specimens grew on maple and sweet gum in 

 the Carolinas, where the plant is still found in great abundance. 

 Old specimens from New Orleans were so changed in appearance 

 that Berkeley described them as P. calvescens. The thinner trop- 

 ical form collected in Cuba was called P. omalopilus by Montague, 

 while the stratified form occasionally assumed under tropical con- 

 ditions is known as Polyporus carueofulvus Berk., or Polyporus 

 holosclerus Berk. Still another variation, sulcate, thicker and 

 tinned with purple, was collected on hickory in South Carolina 

 [Rave ncl 3034) and described by Cooke as P. purpureofuscus. 



In addition to the above specific names, other names with 

 which we have nothing to do have been assigned to our plant, 

 thus increasing the confusion ; as, for example, P. scruposus Fr., 

 P. isioides Berk, and P. pruinatus Berk. & Kl., all applied origi- 

 nally to Indian or African species. 



The present species is too well known to American mycolo- 

 gists to require further description. It is found on decayed wood 

 of deciduous trees throughout ; and except in the Gulf states and 

 south where H. licnoides occurs it need not be confused with other 

 species. Collections are at hand from Canada, Dearness ; Penn- 

 sylvania, Barbour, Sumstiue ; Delaware, Commons; New York, 

 Parle, Burnham, George, Underwood, Murrill ; New Jersey, Ellis, 

 Murrill ; Missouri, Dcmetrio ; Ohio, Sclby, Morgan; Kansas, 

 Cragin ; Wisconsin, Baker ; Nebraska, Clements, Williams ; Vir- 

 ginia, Murrill ; Georgia, Harper, Richer ; Alabama, Earle, Baker ; 

 Florida, Calkins ; Louisiana, Langlois ; Mexico, Smith; Cuba, 



