SECTION LENTUS. 



d MICROPORUS. THIN, RIGID WITH MINUTE, WHITE PORES IN 

 A VERY THIN LAYER. COLOR REDDISH BAY OR SIENNA 

 BROWN. 



A natural section (or perhaps one species) which runs also to forms with 

 lateral stems (Cfr. page 142). (See also Synopsis of Microporus section pub- 

 lished, 1910.) 



XANTHOPUS (Fig. 469). Stipe smooth, yellow. Pileus 

 smooth. A very common species, particularly in Africa, but it occurs 

 also in the East in general. It seems to be absent from the American 

 tropics. 



FLORIDEUS. At best only a dark form of xanthopus with a short stipe. 



Fig. 469 

 Lentus xanthopus. 



CONCINNUS.-Stem slender, b.ack. PUeus 

 form, fine, downy, velvety pubescence. 



INCOMPTUS.-Stem dark or black. PUeus with pubescent 

 zones. This appears to be a common form ,n A nca and , s , q 



173 



