Part 2, 1908] POLYPORACEAE 117 
not sulcate; margin paler, velvety, subzonate, deflexed, at least when dry, acute, undulate 
to lobed : context white, corky, homogeneous, 5 mm. thick; hymenium adnate; tubes very 
pale avellaneous, not stratified, 2-4 mm. long, mouths angular, 4-5 toa mm., stuffed when 
young, edges thin, entire, flavous when fresh, cremeous-melleous in dried specimens: 
spores ovoid, truncate, yellowish-brown, roughly echinulate, 6-7 4-5: stipe thick, cen- 
tral, slightly flattened, equal or expanding above, erect, opaque, horny-encrusted, velvety, 
dark melleous-luteous, white and punky within, 6-8 cm. long, 1.5-2 em. thick. 
Type collected at Hope mine, Jamaica, on Melicocca bijuga, October 25, 1902, F. S. Earle 105. 
DISTRIBUTION : Known only from the type locality. 
6. Amauroderma renatum (Berk.) Murrill. 
Polyporus renatus Berk. Jour. Bot. & Kew Misc. 8: 170. 1856. 
Pileus lateral, very thin, rigid when dry, fan-shaped to reniform, attenuate behind, 
1-2 x 1.5-3 X 0.1-0.2 cm.; surface silky, zonate, slightly rugose, castaneous, becoming 
glabrous and avellaneous-isabelline with age; margin very thin, pallid, entire to undulate 
or lobed : context punky, bay, homogeneous, 0.5-1 mm. thick; tubes not stratified, though 
apparently reviving, 1-1.5 mm. long, murinous to umbrinous within, mouths hexagonal, 
pure white at first, becoming umbrinous with age, 5 to a mm., edges at first very thick, 
becoming thinner, entire: stipe very long, erect or somewhat flexuose, laterally attached, 
slightly expanding above, frequently branched either near the middle or at the apex, avel- 
laneous to umbrinous, opaque, finely tomentose, fulvous and floccose within, 10-20 em. long, 
1-3 mm. thick. 
TYPE LOCALITY: Panuré, Brazil. 
HasitTaT: On the ground, usually attached to buried decaying wood. 
DISTRIBUTION : Nicaragua; Jamaica; also in Brazil. 
7. Amauroderma nutans (Fries) Murrill. 
Polyporus nutans Fries, Nov. Symb. 61. 1851. 
Ganoderma nutans Pat. Bull. Soc. Myc. Fr. 5: 68. 1889. 
A small plant with slender recurved stipe, having the habit of Mydnum auriscalpiunt. 
Pileus corky, orbicular, convex above, concave below, 2 2 * 0.3-0.5 cm.; surface smooth, 
pallid to bay-black, dull-avellaneous in type specimens, abruptly sulcate, radiate-rugose ; 
margin thin, acute, pallid, entire, sterile: context floccose, becoming indurate, very thin, 
white to avellaneous, scarcely a mm. thick ; tubes annual, 2-3 mm. long, pallid to avellaneous 
within, young and but partially developed in type specimens, mouths angular, minute, 8-9 to 
amm., pallid to avellaneous, edges thin, entire: spores not examined : stipe lateral, umbo- 
nate-affixed, long, slender, flexuose, twisted as though twining, recurved at the apex, 
pallid to chestnut, encrusted, dull-avellaneous in type specimens, 2 X 0.4-0.8 cm. 
TYPE LOCALITY: San José, Costa Rica. 
HasiTaT: Dead trunks. 
DISTRIBUTION: Known only from the type pce 
ILLUSTRATION: E. & P. Nat. Pfl. D¥*: f/f 88 c. 
8. Amauroderma subrenatum Murrill, sp. nov. 
Pileus lateral, reniform, convex above, concave below, rigid when dry, 230.2 cm.; 
surface glabrous, rugose, slightly zonate, abruptly shallowly concentrically sulcate, avel- 
laneous to umbrinous, depressed behind; margin finely tomentose, zonate, pallid, rather 
thick : context white, thin, fibrous, 1 mm. thick; tubes not stratified, pale-isabelline when 
dry, 1-1.5 mm. long, mouths circular to hexagonal, regular, 4-5 to a mm., edges thick, 
entire, pale-avéllaneous: stipe long, slender, slightly flexuose at the base, erect above, 
cylindrical, equal, laterally attached, simple, umbrinous, opaque, firm and white within, 10 
cm. long, 2 mm. thick. 
Type collected in British Honduras, on the ground, in 1906, Morton E. Peck. 
DISTRIBUTION: Known only from the type locality. 
