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. 
Polyporus calvescens Berk. Ann. Nat. Hist. 3: 390. 1839, 
Polyporus omalopilus Mont. Pl. Cell. Cuba, 423. 1842. 
Polyporus carneofulvus Berk. in Fries, Nov. Symb. 68. 1851. 
Polystictus purpurcofuscus 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. ca/vescens, The thinner trop- 
ical form collected in Cuba was called P. omalopilus by Montagne, - 
while the stratified form occasionally assumed under tropical con- 
ditions is known as Polyporus carneofulvus Berk., or Polyporus 
holosclerus Berk. Still another variation, sulcate, thicker and 
tinged with purple, was collected on hickory in South Carolina 
(Ravenel 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. & KI., 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 A. licnoides occurs it need not be confused with other 
species. Collections are at hand from Canada, Dearness ; Penn- 
sylvania, Barbour, Sumstine ; Delaware, Commons; New York, 
Earle, Burnham, George, Underwood, Murrill ; New Jersey, Els, 
Murrill; Missouri, Demetrio; Ohio, Selby, Morgan; Kansas, 
Cragin; Wisconsin, Baker ; Nebraska, Clements, Williams ; Vit- 
ginia, Murrill; Georgia, Harper, Ricker; Alabama, Earle, Baker ; 
Florida, Ca/kins; Louisiana, Langlois; Mexico, Smith; Cuba, 
