a 
MurRILL: POLYPORACEAE OF NortTH AMERICA 609 
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, Wilams ; Co- 
lombia, Baker ; Nicaragua, Swuth ; San Domingo, Massee; Ja- 
maica, Underwood 2833; Cuba, Underwood & Earle 1131. 
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 Sw. (Prodr. 149. 
1788), described from Jamaica. It may at once be distinguished 
from 7) vichaptum by its small, cylindrical, very thick-walled tubes. 
The name selected refers to its thick covering of bristly hairs. 
Pogonomyces hydnoides (Sw.) 
Boletus hydnoides Sw. Prodr. 149. 1788.—Fl. Ind. Occid. 3: 
1924. 1806. 
Boletus hydnatinus Bosc, Gesell. Natur. Freunde Mag. 5: 84. 
O4.f. 3. 1811. 
Polyporus pellitus Mey. FI. Esseq. 304. 1818. 
Boletus crinitus Spreng. Vet. Acad. Handl. 51. 1820. 
Boletus fibrosus Hook. in Kunth, Syn. Pl. i: 10, 1822. 
Polyporus Feathermanni 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 181 1, Bosc describes and roughly figures the same plant, it 
Marking that ‘‘one might use it as the type of a new genus. 
Meyer later described it from South America under the name of 
Poly porus pellitus, and Sprengel from Porto Rico, as Boletus crint- 
us. Its most recent name was assigned by Ravenel to specimens 
‘ _ Collected by Featherman at Gainesville, Florida. 
