SPORES HYALINE. SETAE NONE. 



This is known only from one collection, Jamaica, at New York. 

 In its grosser characters it closely resembles Fomes rimosus. Similar 

 context color, surface, etc., but the hyaline spores and presence of 

 setae clearly distinguish it. It was recorded as having no setae. The 

 plant is very close to Fomes cinchonensis, being almost the same 

 under the microscope. The rimose surface is different, if that is a 

 difference. This species is here by inadvertence. It belongs to next 

 Section (70). 



FOMES ADAMANTINUS (Fig. 583). Pileus applanate, with 

 a smooth, black crust. Context hard, rigid, color at first ochraceous 

 tawny when old cinnamon brown. Both colors are sometimes noted 

 in same specimen. Pores minute with concolorous tissue and mouths. 

 Setae, none. Spores (B) 2^2 x 3 x 3^-4 hyaline. 



A quite rigid species of the East. The type is from India, at 

 Kew, but there is also a collection from Japan, and it is recently 

 recorded in the Philippines. The different color of young and old 

 context is unusual in Fomes. 



Compare glaucotus, pachydermus. 



FOMES INFLEXIBILIS. Pileus smooth, applanate, with ridged 

 surface, or subresupinate with slightly pileate development, (both 

 forms at Kew). Surface with hard crust-like appearance, but no 

 distinct crust. Context very pale brown (slightly paler than Buck- 

 thorn), hard, well named inflexibilis. Pores very minute, with mouths 

 concolorous with context. Setae, none. Spores globose, hyaline, 



4 mic. 



I think this is known only from types at Kew from Brazil. The 

 recent records from Java and Jamaica are, in my opinion, both mis- 

 references. 



Compare crustosus. 



FOMES EXOTEPHRUS. In general appearance and shape, black, glabrcus, 

 rugulose crust, etc., this is quite close to Fomes caliginosus (compare on page 237). 

 The only marked difference is in the paler color of the context, which is light brown 

 (cinnamon) color. I do not find any spores, often so abundant in caliginosus. At 

 Kew, Fomes exotephrus is known from a single specimen, collected by the Challenger 

 expedition (Admiralty Island). I doubt if it is the same as the specimen labeled 

 Fomes caliginosus, and collected on same island. Context dark brown. 



In one species (under D) , Fomes melanopus, the surface is dark purplish black, but the context 

 is dark brown. 



B. Medium or large species. 



FOMES FOMENTARIUS (Fig. 584). Pileus ungulate, with a 

 hard, smooth, grayish crust. Context punky, dark brown (Antique 

 brown). Pores minute, with glaucous, pruinose mouths. Pore tissue 

 paler than the context. Setae, none. Spores hyaline, large, oblong, 



5 x 16 mic. 



235 



