AURANTIACUS. CONTEXT LATERICEOUS. 



SECTION 66. CONTEXT ORANGE RUFOUS. SPORES COLORED. 



FOMES JUNIPERINUS. Pileus ungulate, or narrowly un- 

 gulate, with a black, rimose, rough surface. Context hard, woody, 

 orange rufous. Pores medium 2-3 to mm., at first round, at length 

 often elongated by tearing of the walls, at first ochraceous, the tissue 

 of the old layers gradually assume the red color of the context. Setae, 

 none. Spores abundant, globose, 4-5 mic., pale colored. 



This is a rare plant, growing, as far as known, only on species of 

 Juniperinus, hence well named. In the United States it has been 

 collected scantily in Kentucky and Tennessee (cfr. Myc. Notes, p. 

 522), but in recent years more abundantly in the Southwest (Texas, 

 New Mexico, and Arizona), and always on juniper. In Europe it is 

 known from a single specimen collected in Russia on juniper seventy 

 years ago, and preserved at Paris. I am told it has also been collected 

 in Africa, and a recent specimen sent to Kew. 



SPECIMENS. I have a fine specimen from Arizona. W. H. Long. 

 Compare Demidoffi, Earlei. 



FOMES TRICOLOR. Pileus large, applanate, with black, 

 rimose crust. Context latericeous red, hard, woody. Pores minute, 

 concolorous, paler when young, hard, woody. Pore mouths brownish. 

 Setae, none. Spores colored, 5-5^x6-6^2, smooth, abundant. 



This species is known from a few collections in Philippines. 

 There is a cotype at Kew. It seems to be badly named. The spores 

 were described as "hyaline with brown walls" (sic.) 



FOMES LATERITI US .Pileus thick, ungulate, seemingly with 

 a thick, brown crust. Context hard, woody, latericeous red. Pores 

 minute, concolorous, hard. Pores small, concolorous. Spores glo- 

 bose, 5-6 mic., colored, smooth. 



While the "description" reads much like the preceding, they are 

 quite different plants. Fomes lateritius is known from two specimens 

 at Kew, one from Brazil, the other from Demarara. 



4TH GENERAL DIVISION, BICOLORIS. 



SECTION 67. 



This section with bicolored tissue, the pores a dark brown, the flesh a light 

 buff, is a unique section, embracing but two known species, which are perhaps the 

 same. The spores of one are large, globose, brown. The section is related to the 

 section Amaurodermus in the stipitate series. 



FOMES M I RABILIS. Pileus applanate (10 x 18 x 3 cm.) with 

 a hard, regular, brown crust. Context 1-1> cm. thick, pale buff 

 when dry, more yellow when moist, hard, ligneous. Pores Verona 

 brown, contrasting with the pale context, iy to 2 cm. long, minute, 



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