3- P . craspedius Fr. Soft, becoming tough, reddish to pale brown or 
ashen, margin wavy and crenatelv lobed; stem solid, glabrous, pallid; 
gills close, white. Csespitose, on trunks in woods, rare. 
4. P. sulphureoides Peck. Fleshy, rather thin, umbonate, pale yellow, 
sometimes squamulose ; gills rather broad, slightly rounded behind or 
emarginate, pale yellow; stem fibrillose, stuffed or hollow, slightly mealy 
at the top, yellowish or pallid. Prostrate trunks, rare. 
5. P. lignatilis Fr. Fleshy, thin, tough, often umbilicate, mealy or 
glabrous, white; gills narrow, crowded, white; stem unequal, rather 
slender, somewhat tomentose, stuffed then hollow; smells of meal. On 
decaying wood, etc. Common and variable. 
b. Lamellae decurrent. Nos. 6-13. 
Nos. 6 and 7 have a veil. 
6. P. corticatus Fr. With a veil which tears into membranous shreds 
attached to the margin of the cap (appendiculate), or forms a ring which 
soon vanishes; pileus compact, thick, densely villous, or lloccose, entire; 
gills long decurrent, forked, anastomosing below; stem firm, rooting, 
fibrillose ; plant white, sometimes very large. On trunks, rare, not unlike 
the next. 
7. P. dryinus Pers. Veil lacerate, appendiculate ; pileus thick, hard, 
thin at the edges, variegated with dark scales; gills decurrent, almost 
simple, not anastomosing, white, bruising yellow; stem thick, whitish. 
Oak, ash, apple etc., rare. E. 
8. P. subareolaius Peck. Compact, whitish, tinged with brownish 
pink, surface cracking into small spots; gills rather broad, loose, decur¬ 
rent, whitish, tinged when dry with yellow; stem short, firm, solid, 
white. On elm, rare. 
9. P. pometi Fr. Fleshy, somewhat flaccid, centre depressed, glabrous, 
even, white; stem solid, elastic, radicating and villous at the base; gills 
decurrent, crowded, broad, distinct below, white. Apple trees, etc. E. 
10. P. sapidus Kalchbr. Large, fleshy, generally caespitose, glabrous, 
variable in color; gills rather broad and distant, sometimes anastomos¬ 
ing at the decurrent base; stem firm solid, often very short, whitish. 
Common, very variable, usually taken for the next, but the spores are 
pale lilac , not white. E. 
11. P. ostreatus Fr. Much like the last, but the gills are said always 
to anastomose below ; the stem is very short and sometimes wanting, 
and often hairy at the base, and the spores are white ; smell and taste 
rather strong. The Oyster Mushroom ; common. E. 
var. glandulous is brown, and has wart-like bodies on the gills. 
12. P. euosmus Berk. Has a strong pleasant smell, is white and 
shining with a tinge of blue, and the pilei are much crowded ; the spores 
are not white, but as in P. sapidus. 
13. P. salignus Fr. Fleshy, firm, spongy, nearly dimidiate as in the 
following species, depressed and often hairy behind, whitish or darker; 
gills sparingly branched, decurrent, distinct at the base, eroded on the 
edge, crowded, dingy ; stem very short or wanting, lateral, tomentose ; 
spores become dingy. On willows, etc.; taste slightly acid. 
Dimidiate , pileus developed only o)i one side of the stem , which is thus 
definitely lateral . or is wanting entirely, leaving the plant sessile. Not 
at first resupinate. Nos. 14-18. 
14. P. serotinus Fr. Fleshy, compact, viscid when young or moist, 
often imbricated, color varying, but often brown with yellowish and green¬ 
ish tints, margin at first involute; gills close, determinate, whitish, or 
yellowish : stem very short, yellowish, and minutely blackish tomentose. 
Dead trunks, etc. Common. 
15. P. mitis Fr. Small, tough, kidney-shaped, glabrous, pallid; gills 
crowded, determinate ; stem dilated above, white-squamulose. Resembles 
Pa tins stipticus. Rare. 
