1 86 POLYPOREI. 



Polyporus. and not bristly-hispid, pores white. When more fully grown sometimes soft, 

 sometimes hardened, but soon putrefying and not lasting throughjhe winter. 



* Eupolypori. Pores round, entire, obtuse, without small teeth. 



** Pores elongated, flexuoiis, acute, and torn. Species in this section do not 

 become hard. 



2. Lenti. Pileus fleshy-pliant (tough even in younger specimens), soft, 

 elastic, villoso-tomentose on account ot the fibroso-floccose texture of the sub- 

 stance ; pores somewhat adnate, coloured. Always soft, somewhat flexile, last- 

 ing to the following spring, joined by intermediate forms to the preceding 

 group, but manifestly presenting a different type. 



* Substance coloured. 

 ** Substance ivhite. 



3. Spongiosi. At first and while fresh moist, spongy, when dry firm, 

 elastic, for the most part bristly-hispid, internally fibrous. The flesh com- 

 monly presents an intermediate stratum, more compact than the exterior. 

 Firm, but annual, autumnal, the finest specimens on living trunks. Com- 

 monly mixed up with P. stupposi which are always dry and rigid not spongy. 



* Substance coloured. 



** Substance and spores white. 



B. Placodermei (7rAa, anything flat ; Sep/ma, skin). Pileus clothed with a 

 continuous crust, zoneless or concentrically sulcate. Persistent. 



4. Suberosi. Pileus at the first somewhat fleshy and juicy, then hardened, 

 covered with a rather thin crust ; pores slender, at length somewhat separating. 

 Autumnal, in some cases lasting to the following spring, but never reviving so 

 as to produce strata. Differing from the foregoing by the cuticle, from all the 

 following by the pileus being at first fleshy and juicy. 



* Substance coloured. 



** Substance, which is not zoned, and spores white. 



5. Fomentarii (fomentum, fuel. From some species, e.g., P. fomentarius, 

 being used as tinder). Pileus floccose, of the nature of tinder, juiceless from 

 the first, not fleshy or spongy, covered with a hard, horny crust, the pores at 

 length stratose. Growing on wood, somewhat pulvinate, truly perennial, add- 

 ing new strata year by year. In specimens from 10 to 20 years of age narrow 

 zones corresponding with warm and dry years, and thick and broad ones 

 corresponding with rainy years can be observed. Care must be taken not to 

 be deceived by a specimen of the first season, without strata. In old speci- 

 mens the cuticle is here and there broken into chinks or wasted away. 



* Substance and pores umber or fuscous. 



** Substance and pores somewhat ferruginous. 

 *** Substance white or pallid. 



6. Lignosi (lig?tum, wood). Pileus from the first hard, woody, juiceless, 

 covered with a thin, somewhat varnished crust, which is smooth or becomes 

 so, somewhat effused at the base ; pores not stratose. Perennial (not putrefy- 

 ing) but not stratose, flatter than the former group or effuso-reflexed. 



C. Inodermei (to-, a fibre ; Se>M<*, skin). Pileus from the first arid and firm, 

 with a thin fibrous cuticle. Annual or biennial fungi, not reviving. 



7. Stupposi (stuppa, flax). Pileus flocculose then smooth, or adpressedly 

 villous, uneven, zoneless, texture fibrous. 



* Substance coloured. 

 ** Substance white. 



8. Coriacei (corium, a hide). Pileus coriaceous, villous, banded with con- 

 centric zones which are generally of different colours. 



V. RESUPINATI. Pileus none, consequently the fungus is absolutely re- 

 supinate ; pores immediately seated on wood or on the mycelium without the 



