Mukrill: Polyporaceae of North America GOD 



The type plants of this species were collected in the eastern 

 part of Guiana by Poiteau and fully described by Montagne. It 

 has since been frequently collected in many parts of South 

 America and ranges northward to Central America and the West 

 Indies. Plants seen in some herbaria labelled P. heteromallus are 

 only large zonate forms of this species. A decidedly sinuous 

 hymenium is present in specimens recently collected in Cuba and 

 Jamaica. Collections are at hand from Bolivia, Williams; Co- 

 lombia, Baker; Nicaragua, Smith; San Domingo, Massee ; Ja- 

 maica, Underwood 2833 ; Cuba, Underwood & Earle UJI. 



Pogonomyces gen. nov. 



Hymenophore annual, epixylous, dimidiate-sessile to flabelli- 

 form, thickly covered with rigid hairs ; context dark-brown, punky, 

 tubes short, thick-walled, mouths small, circular ; spores smooth, 

 hyaline. 



This genus is founded upon Boletus hydnoides Svv. (Prodr. 149. 

 1788), described from Jamaica. It may at once be distinguished 

 from Trichaptnm by its small, cylindrical, very thick-walled tubes. 

 The name selected refers to its thick covering of bristly hairs. 



Pogonomyces hydnoides (Svv.) 

 Boletus hydnoides Sw. Prodr. 149. 1788. — Fl. Ind. Occid. 3: 



1924. 1806. 

 Boletus hydnatinus Bosc, Gesell. Natur. Freunde Mag. 5 : 84. 



pl.4-.f-3- 1811. 

 Polyporus pellitus Mey. Fl. Esseq. 304. 18 18. 

 Boletus crinitus Spreng. Vet. Acad. Handl. 51. 1820. 

 Boletus fibrosus Hook, in Kunth, Syn. PI. I : 10. 1822. 

 Polyporus Feathennanni Rav. Grevillea, 6 : 130. 1877. 



This very abundant tropical species was first described in 1788 

 from Jamaica. In enlarging his original brief description for the 

 Flora of the West Indies, Swartz also enlarged his description of 

 the type locality to read : " On trees in the mountains of Jamaica." 

 In 1 8 1,1, Bosc describes and roughly figures the same plant, re- 

 marking that " one might use it as the type of a new genus." 

 Meyer later described it from South America under the name of 

 Polyporus pellitus, and Sprengel from Porto Rico, as Boletus crini- 

 tus. Its most recent name was assigned by Ravenel to specimens 

 collected by Featherman at Gainesville, Florida. 



