14 NORTH AMERICAN FLORA [VoLuME 9 
somewhat uneven, distinctly stratose; tubes 2-3 mm. long each season, fulvous and some- 
what whitish-stuffed within, mouths circular, regular, 6 to a mm., ferruginous when young, 
fulvous-umbrinous with age, refracting the light, edges rather thick, entire : spores subglo- 
bose, smooth, ferruginous, copious, 3.5-4.54; hyphae ferruginous; cystidia none. 
Type collected near St. Martinsville, Louisiana, on decaying logs in swampy woods, December 
14, 1895, A. B. Langlois 2430. 
DISTRIBUTION : Louisiana. 
9. Fomitiporella floridana Murrill, sp. nov. 
Broadly effused, rigid, inseparable, 4-7 mm. thick; margin determinate, narrow, ferru- 
ginous when young, blackish with age: context almost invisible, brown; hymenium nearly 
plane, distinctly stratified ; tubes 1.5-3 mm. long each season, fulvous and whitish-stuffed 
within, mouths angular, 5-6 to a mm., grayish-umbrinous, edges thin, entire or slightly 
uneven: spores globose, smooth, ferruginous, copious, 3-4; hyphae ferruginous; cystidia 
none. 
Type collected in Florida, on dead deciduous wood, January, 1887, W. W. Calkins 850. 
DISTRIBUTION : Known only from the type locality. 
18. TINCTOPORIA Murrill, gen. nov. 
Hymenophore resupinate, epixylous, annual: context inconspicuous, the mycelium 
staining the substratum a deep orange-red ; tubes exceedingly minute, thin-walled, black : 
spores smooth, ovoid, hyaline; cystidia none. 
Type species, 7inctoporia aurantiotingens Murrill. 
1. Tinctoporia aurantiotingens (Ellis & Macbr.) Murrill, sp. nov. 
Poria Fuligo aurantiotingens Ellis & Macbr. Bull. Lab. Nat. Hist. Univ. Iowa 3?: 191. 1896. 
Hymenophore totally resupinate, imbedded, inseparable from the matrix, exceedingly 
thin, the mycelium imparting a deep orange-red stain to the underlying wood; tubes about 
30 # long and 50 # broad, black, thin-walled, angular, entire: spores smooth, ovoid, hya- 
line, 2.5-3.5 #; cystidia none. 
Type collected in Mexico, on decayed hardwood logs, in 1891, Charles L. Smith. 
DISTRIBUTION : Mexico. 
19. MELANOPORELLA Murrill, gen. nov. 
Hymenophore resupinate, epixylous, annual: context soft and punky, chocolate-brown ; 
tubes of medium size, irregular, rigid, thin-walled, concolorous at maturity, the mouths at 
length darker: spores smooth, thick-walled, brown ; hyphae brown ; cystidia none. 
Type species, Polyporus carbonaceus Berk. & Curt. 
1. Melanoporella carbonacea (Berk. & Curt.) Murrill. 
Polyporus carbonaceus Berk. & Curt. Jour. Linn. Soc. 10: 317. 1868. 
Broadly effused, inseparable, of light weight, somewhat flexible, corky, 3-8 mm. thick ; 
margin thin, somewhat elevated, tomentose, undulate, chestnut-colored : context conspicu- 
ous, 1-2mm., thick, punky, dull bay-brown; hymenium uneven, proliferous at times, nearly 
black, with a tinge of bay; tubes large, angular, somewhat irregular, 1-2 toa mm., edges 
thin, dentate: spores smooth, thick-walled, brown, with a large central vacuole, 9-104; 
hyphae dark-brown ; cystidia none. 
TYPE LOCALITY: Cuba. 
HABITAT: Dead trunks. 
DISTRIBUTION: Cuba. 
20. MELANOPORIA Murrill, gen. nov. 
Hymenophore resupinate, epixylous, perennial: context firm, fibrous, fuliginous, with 
a horny black layer next to the substratum; tubes small, regular, thin-walled, stratose, 
fuliginous within, the mouths black : spores smooth, ovoid, black; hyphae black or fulig- 
inous; cystidia not present. 
Type species, Polyporus niger Berk. 
