334 POLYPORACE^E Polyporus 



b. Lenta. Pilens fleshy-pliant, then coriaceous, zoneless. Spores 



white. Growing on trunks. Persistent. 



Pileus lustrous, scaly or villous. 1519, 1520 



Pileus even, smooth. 1521, 1522 



c. Spongiosa. Pileus spongy-soft, hygrophanous, tomentose, 



then corky or coriaceous, regular, irregular, lobed or 

 dimidiate. Stem short, irregular. Pores irregular, changing 

 colour. Spores white. Mostly terrestrial,' lasting through 

 the winter 'in a dead state, not perennial. 1523, 1524 



d. Subcoriacece. Pileus at first indurated, arid ; when full grown 



corky or coriaceous, tomentose, velvety. Stem definite, 

 rarely lateral. Pores at first sprinkled over with a white 

 bloom. Substance ferruginous. Terrestrial or on trunks ; 

 more regular, rigid and persistent than Spongioscz. Not 

 reviving. 1524a 1526 



PLEUROPOD^E. Pileus pliant or corky, horizontal, not circular. 

 Stem simple, lateral or excentric, black at the base. 

 Growing on wood. 



a. Lenta. Pileus fleshy-pliant, zoneless. Stem excentric, 



blackish at the base. Tubes short. Substance somewhat 

 fibrous, pallid. 15271534 



b. Suberosolignosa. Pileus thick, hard zoneless. Stem stout, 



vertical, of the same colour at the base. Tubes elongated. 



1535 



MERISMATVE. With many branching stems proceeding from a 

 common trunk, each as a rule bearing a pileus or pileolus. 

 The largest of fungi are found in this group. 



a. Carnosa. Tufts central, stipitate, springing from a common, 



more or less concrete base. Pileus fleshy firm floccoso- 

 fibrous, zoneless, not coriaceo-indurate. Tubes separating 

 from the pileus. Spores white. Partly terrestrial. Autum- 

 nal. Edible. 15361539 



b. Lenta. From the tough pileus. Tufts lateral, substipitate, 



in many imbricate layers. Pileus fleshy-pliant, then sub- 

 coriaceous, fragile when old,' more or less zoned, fibrous 

 within. Stems more or less connate, or growing from a 

 common tuberous base. Growing at the- base of trunks. 

 Spores white. Autumnal, not lasting till the following 

 spring. Not edible. 15401542 



. Caseosa. Tufts sessile on the stems of trees, ^commonly 

 dimidiate, but in horizontal positions, central and expanded 

 on all sides. Springing from a tubercular- base into 

 numerous -pileoli. Pileus cheesy, at first soft and juicy, 

 then arid, without a pellicle, zoneless. Tubes separating. 

 Growing in spring and summer, soon decaying. Acid. 



15431546 



