608 MurrRiLL: POLYPORACEAE OF NORTH AMERICA 
Polyporus sulphureus Fr. Syst. 1: 357. 1821. 
Polypilus sulphureus Karst. Rev. Myc. 3: | 1881. 
Polypilus spectosus Murrill, Jour. Myc. 9: . 1903. 
This species is widely and abundantly distributed both in 
Europe and America and is exceedingly well known on account 
of its size, conspicuous habitat, and bright attractive coloring. 
The mycelium spreads widely through the trunks of deciduous, 
and even evergreen, trees, causing serious damage, while the 
sporophores appear annually in caespitose-multiplex masses at 
knot-holes on the affected parts. The various names under which 
the plant has been known all refer to the bright color of these 
sporophores, which are usually reddish-yellow above and sulfur- 
yellow below, fading to almost white with age. A few of the 
numerous collections in which this plant figures are noted here: 
Sweden, Murrill; Maine, Miss White ; Connecticut, Mss White ; 
Delaware, Commons ; New York, Peck & Earle; Pennsylvania, 
Everhart & Haines ; New Jersey, Ellis, Murrill ; Alabama, Earle ; 
Louisiana, Langlois ; Mexico, Smith. 
Trichaptum gen. nov. 
Hymenophore annual, epixylous, sessile, dimidiate ; context 
brown, firm and leathery below, very loosely fibrous and darker 
above ; tubes short, thin-walled, mouths polygonal, becoming 
labyrinthiform ; spores smooth, hyaline 
The type of this genus is Palssarus trichomallus Berk. & 
Mont. (Ann. Sci. Nat. III. 11: 238. 1849), described from 
Guiana. It resembles the old-world genus Fwnalia erected by 
Patouillard in 1900 with P. mons-veneris Jungh., P. leoninus Kl. 
and P. funalis Fr. as typical species and P. trichomallus Berk. & 
Mont. in a subsection ; but it may be easily distinguished from 
Funalia by its darker sonterd and daedaleoid hymenium. While 
splitting often occurs, rendering the hymenium irpiciform, the 
splitting is not so radical as in Funalia. The name chosen refers 
to the loosely woven context. 
Trichaptum trichomallum (Berk. & Mont.) 
Polyporus trichomallus Berk. & Mont. Ann. Sci. Nat. III. 11: 
238. 1849. 
funalia trichomaila Pat. Tax. Hymen. 95. 1900. 
