15 NATURAL HISTORY BULLETIN. 



thick, reminding one of P. hirsutus. except that the yellowish 

 pores have now become lengthened and lacerate. 



Very common on stumps, half-buried roots, etc. Pileus 

 1-3 cm in diameter. N. A. F. 7, 919. 2509. 



5. PoLYSTiCTUs ciNXABARiNus { yacguin] Pries. 



Pileus suberose conyexo-plane. subzonate, rugulose. from 

 pubescent glabrate. cinnabar-red. fading, within floccose, 

 brighter: pores round, medium, bright cinnabarine. 



This beautiful species is easily recognized among our native 

 forms by its brilliant coloration. Nothing else comes near to 

 it. P. sa)igiini€us L. from farther south resembles it, but has 

 smaller pores and is substipitate. This species likewise has 

 been assigned now to the genus Tramctcs, now to Polysticius 

 -and is in an\- comparison doubtful. The polystictine develop- 

 ment of pores is well shown. In cross-section the pileus is 

 very delicately zonate. Very common on soft woods. In 

 width the pileus reaches 48 cm; in length 4-12 cm. N. A. 

 F. 502. 



6. POLYSTICTUS PERGAMENUS Pr/'CS. 



Pileus coriaceous-membranaceous, rigid, tomentose. concen- 

 trically sulcate. white; pores seriate, pallescent, produced at 

 length in the form of very thin dentate lamella\ 



Common on trunks of all sorts; generally abundant, imbri- 

 cate and effused; at first very scft. tomentose. Not sericeous 

 as in No. 4. becoming smooth and mereh' pruinose with age. 

 The hymenium at first richly violet or purple soon fades, 

 especiall}- on exposure to strong light, and shows at last but 

 various shades of pallid brown with little to remind us of its 

 characteristic color. The pores stand in more or less evident 

 concentric series, show their porose character at the outset 

 only, soon become denticulate, then strangely sinuous-lamel- 

 late, and reflexed. In form the pilei are dimidiate, fiabelli- 

 form, depressed behind and where not effused, scutate or 

 substipitate. 3-6 cm x 4-8. N. A. F. 312. 1934. 



7. POLYSTICTUS BIFORMIS Klotz. 



Pilei imbricated, effused-reflexed, fibrous coriaceous, soft 



