CONTEXT AND PORES COLORED. 



POLYPORUS ADUNCUS. Pileus dimidiate, 1 cm. thick, 

 unicolorous brown. Surface with coarse, brown, hispid hairs. Con- 

 text brown. Pores small, round, brown. Setae few, large, 8-10 x 

 60-75 mic., deeply colored, with peculiar, hooked points. Spores 

 hyaline, smooth, 4 x 5-6 mic., not guttulate. Spores are a little 

 larger than Polyporus leporinus, but otherwise it is exactly the same, 

 excepting the surface, which is quite different. It is very rare, only 

 known from one specimen from E. K. Abbott, Monterey, Cal., and 

 grew on the roots of a pine tree. To the eye it resembles Polyporus 

 cuticularis, but has no relation to it otherwise. 



FOURTH GENERAL DIVISION. 



SPORES AND CONTEXT COLORED. SPORES NOT 

 TRUNCATE. 



All previous sections have hyaline spores. 

 SECTION 97. CONTEXT PALE (WHITE?) OR ISABELLIXE. SETAE NONE. 



POLYPORUS BERNIERL Pileus sessile, dimidiate, large, 

 10-50 cm. Surface brown, strigose, hispid, at length black. Context 

 yellowish, isabelline, very light weight, spongy. Pores large, 1-2 mm., 

 angular, with uneven, angular mouths. Pore tissue concolorous. 

 Setae, none. Spores pale colored, 6-7 x 8-10, abundant, smooth. 



The type is at Paris. It came from New Caledonia. It is note- 

 worthy for its light weight and color. 



SPECIMEN'. Cotype, Museum Paris. 



POLYPORUS DIELSIL This is a very large species, said to be "40 x 40 cm." 

 It is only known from a piece at Berlin, and came from Australia. The spores, in 

 abundance, are large, 7 x 10, pale colored, smooth. The pores are brown, but the 

 flesh is much paler and may have been white when fresh. The hyphae of the pore 

 tissue is pale, the hymenial elements dark. This is a reversal of what is usually 

 found in the polypores. The plant has a distinct brown cuticle. It is a very curious 

 species and imperfectly known. 



SECTION 98. CONTEXT YELLOW. SETAE NONE. 

 Both species known in this section are thin plants. 



POLYPORUS RHEICOLOR. Pileus imbricate, thin (2-3 mm.). 

 Surface even, minutely tomentose, dark brown. Context scanty, thin 

 (1-5 mm.), bright yellow. Tubes minute, 1-2 mm. long, brown, 

 darker color than the context. Spores subglobose, 4x4-5, deeply 

 colored, smooth. 



This is a species of the American tropics only, as far as known. 

 It is represented in the museums from Cuba, Brazil, Central America, 

 etc., mostly by single pileoli, but we judge it grows densely imbricate 

 as distributed by Rick. A specimen we have proceeds from a common 

 base, but we think it is unusual. The context is usually thin (1 mm.), 

 but we have a specimen from Rev. Torrend that has flesh 5 mm. thick, 



354 



