90 BULLETIN 1380, U. S. DEPARTMENT OF AGRICULTURE 
pockets in final stages. This species has been described under a variety 
of names. It is best known under the above name. Some of its synonyms 
are Polyporus surinamensis Miq., P. rigidus Berk., P. rufopictus (B. and 
C.) Cke., and P. rugulosus Lev. The species extends into the Temperate 
Zone and if not the same is closely related to Polyporus undatus Pers. 
Polystictus atypus (Lev.) Bres. On dead stump, part of which was living, 
Amazon region. 
P. flavus (Kl.) On dead wood. Orient. 
P. hirsutus Fr. Ou dead stumps, Singapore. 
P. (Irpcx) farhiaccus Fr. On dead branches, Amazon region. 
P. persoonii Fr. See Trametes. 
P. sanguineus (L.) Fr. On dead branches, fire scars, Amazon region: on 
dead wood, Malay Peninsula. 
Poria albocincta Cke. and Mass. (P. aurantiotingens Ellis and Macbr.). 
Sporophore effused, persisting, hard ; subiculum inconspicuous ; margin 
whitish, soon abrupt ; pores very short, dsedaloid. with free walls, not 
continuous with those of the previous season, soon becoming entirely 
obscured or filled with crystalline deposits 10 to 18 per millimeter; pore 
mouths at first light gray to slate color, becoming smoke color to black 
when old; dissepiments thin, gray, or black, edges becoming lacerate with 
crystalline deposits; spores ovoid, smooth, hyaline, average (50) 3.5 
by 2.5 ft] cystidia none; tramal hyphse parallel, with long axis of pore 
thick walled, fuscous or brownish black in mass; subicular hyplue yellow- 
ish orange, conspicuously branched, thick walls; lumina large, subpseu- 
dosclerencnymatous, staining wood a bright ange; rot light yellowish 
or white, usually hard and compact but may become soft and spongy in 
some woods. On Hevea and other woods. Amazon region. In color of 
the pores the species resembles 7'. ravcnaJac Berk, and Br. (P. fuligo 
Berk, and Br., P. nigra Berk, and Br., not P. nigra (Berk.) Cke. from 
Ohio. P. buttneri Ilenn., P. glauca Pat.). P. ravcnalae, however, grows 
only on palms and does not color the wood red. The pores are also 
Larger and not dsedaloid. 
P. borbonica Pat. (P. cinereicolor Murr. ). Sporophore effused, persistent, 
firm; subiculum inconspicuous; margin white, soon obsolete; pores 5 to 
(> per millimeter, angular; pore mouths cinereous gray; dissepiments thin, 
glaucous when old, with brownish context: basidial layer conspicuous; 
spores broadly ellipsoid, ovate or flattened on one side, smooth, hyaline, 
average (."»()) 2.3 by 3.5 {*; cystidia not well defined, large obtuse crys- 
tallike bodies embedded in the trama and rarely projecting are pres- 
ent; hyplue in wood branched, brownish yellow with reddish tinge; rhizo- 
morphs when present brownish red, sometimes with white fimbriate 
extensions. Surface wood stained a conspicuous brick red. Rot white, 
firm, becoming friable in some woods. Found on Hevea and other trees, 
Amazon region. 
P. graph ica Bres. (P. latcritia Pat.). Sporophore effused, perennial, hard; 
subiculum indistinct, sometimes showing as a dark line; margin white 
when young, becoming abrupt ; pores conspicuously stratified in fine nar- 
row lines less than one-half millimeter long each season, 5 to 6 per milli- 
meter, frequently in parallel rows or labyrinthiform, angular, old layers 
solid filled and of a conspicuous brick-red color ; pore mouths gray to 
reddish, cinereous when young, becoming brownish red with age; dissepi- 
ments thin, grayish with reddish context ; spores ovate to ellipsoid, smooth, 
hyaline, average (50) 2.4 by 4.(5 //. ; cystidia none: hyphre yellowish with 
reddish content. Conspicuous white cords tinged or streaked with red are 
sometimes developed between the bark and wood. Red lines in the wood 
are frequently apparent, but the red color is mostly confined to the 
surface wood. The decay is white to yellowish and firm. Found on the 
wood of Hevea and other trees, Amazon region. 
P. hypobrunnea Petch. Sporophore extensively effused, reviving, pliable when 
fresh, hard and brittle when dry; subiculum thick, conspicuous in well- 
developed specimens, dark brown to black, compact fioccose when torn 
and when on irregular surfaces, inseparable from substratum except 
on smooth decorticated wood; margin white when young, pubescent, soon 
concolorous with pores; pores rarely stratified, 1 to 3 millimeters long, 
9 to 10 per millimeter, regular to angular; pore mouths even, slightly 
granular, yellowish white when young, becoming pink or rose color to 
reddish brown, sometimes with a glaucous or grayish tinge, eventually 
