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TROPICAL POLYPORES 



i. CRYPTOPORUS VOLVATUS (Peck) Hubbard 



Pileus simple, sessile, rarely spuriously stipitate, globose to 

 ungulate, 2-6 cm. broad, 1.5-3 cm - thick; surface white, some- 

 times slightly reddish-brown, smooth, slightly viscid or resinous 

 when young, glabrous, marked with anastomosing depressed 

 lines in larger specimens; margin very rounded, concolorous, 

 smooth, produced into a volva covering the tubes, at length 

 ruptured at 1-3 points forming small rounded or irregular aper- 

 tures; context soft-corky, homogeneous, white, 2-5 mm. thick; 

 tubes 1-1.5 mm. long, isabelline to umbrinous, mouths angular, 

 yellow with a tinge of cinnamon, 3 to a mm., edges thick, be- 

 coming thin, entire; spores oblong, hyaline or pale-flesh-colored, 

 11-13 X 4-5 /* 



Occasional on decayed coniferous trunks in Mexico. 



FOMES Gill. 

 ungulate or applanate, epixylousJ 



37- 



Hymenophore sessile, 

 surface anoderm or encrusted, sulcate, rarely zonate; context 

 white, wood-colored, or flesh-colored, corky or woody, rarely 

 punky; tubes cylindric, usually thick- walled, stratose; spores 

 smooth, hyaline or subhyaline. 



Context flesh-colored; light-brown in faded specimens. 



Tubes 1-2 mm. long each season; spores ellipsoid. i. F. roseus. 



Tubes 3-5 mm. long each season; spores globose. 2. F. Sagraeanus. 



Context white or nearly so. 

 Pileus less than 3 cm. broad. 



Pileus ungulate; tubes 510 mm. long. 3. F. turbinatus. 



Pileus scutellate; tubes less than 2 mm. long. 4. F. scutellatus. 



Pileus more than 3 cm. broad. 



Pileus encrusted; surface darker than the context. 

 Pileus thin, applanate. 



Surface zonate. 5. F. annosus. 



Surface azonate. 6. F. subferreus. 



Pileus thick and usually ungulate. 



Marginal zone pallid to gray or brown. 7. F. ligneus. 



Marginal zone pallid to yellowish or reddish- 

 chestnut. 8. F. ungulatus. 

 Pileus rarely encrusted; surface concolorous with the 



context. 



Tubes large, 2 to a mm., becoming reddish when 

 bruised; annual strata separated by thick layers 

 of context. 9. F. rubritinctus. 



Tubes small, 5-7 to a mm., not changing to reddish 



when bruised. 



Surface zonate. 10. F. Auberianus.. 



Surface azonate. n. F. geotropus. 



