Part 5, 1916] AGARICACEAE 
Stipe 8-10 cm. long. 
Stipe 15 cm. long. 
Stipe 3-5 cm. long. 
Pileus some shade of red, purple, or violet. 
Pileus livid-purple; lamellae blackish-violet, dentate. 
Pileus not as above; lamellae pale-violet. 
Hymenophore occurring on dead wood. 
Pileus pallid, varying to pale-yellowish or pale-avellaneous. 
Disk concolorous. 
Pileus umbonate; stipe 4-10 cm. long. 
Pileus not umbonate; stipe 3-4 cm. long. 
Stipe snow-white throughout. 
Stipe pale-ochraceous-cinereous. 
Disk brownish or bay. 
Pileus not umbonate, becoming slightly umbilicate. 
Pileus umbonate or obtuse. 
Pileus red or orange; lamellae and stipe also orange. 
Pileus purplish-brown to lilac-brown; lamellae purplish-brown on 
the edges. 
Pileus gray, avellaneous, or brownish, sometimes reddish. 
Stipe 1-2 mm. thick, rarely reaching 3mm. in P. rugosoides. 
Stipe radicate, 4-8 cm. long. 
Stipe not radicate. 
Lamellae denticulate, pale-brown, 
edges. 
Lamellae not denticulate, white or grayish. 
Stipe 3-4 cm. long. 
cae gray, slightly rosy-isabelline on the 
isk. 
Surface avellaneous at maturity, fuliginous on 
the disk. 
Stipe 5-6 cm. long; surface covered with com- 
pacted fibrils which split radially. 
Stipe 2-5 mm. thick. 
Stipe 2.5 em. long. 
Stipe 3 cm. or more long. 
Pileus and stipe viscid. 
Pileus and stipe not viscid. 
Lamellae grayish-white. 
Lamellae white. 
Stipe 3-5 cm. long. 
Stipe 5-10 em. long. 
Hymenophore gregarious. 
Hymenophore cespitose. 
purplish on the 
II. SPECIES OCCURRING ON THE PACIFIC coast 
Pileus 1 cm. or less broad; surface white, yellow, or red. 
Pileus white or whitish. 
Stipe 3 cm. long. 
Stipe 6-10 cm. long. 
Pileus yellow or orange. 
Pileus flavous, with luteous tint on the disk; lamellae citrinous. 
Pileus citrinous with orange umbo; lamellae white. 
Pileus and stipe orange; lamellae white. 
Pileus scarlet, miniatous, or incarnate. 
Lamellae reddish on the edges. 
Lamellae white or yellowish on the edges. 
Stipe rosy-isabelline, 1.5-3.5 cm. long. 
Stipe pale-yellow, 6 cm. long. 
Pileus 1-5 em. broad. 
Lamellae purplish-brown on the edges. 
Lamellae not purplish-brown on the edges. 
Pileus caesious with an aeruginous tint. 
Pileus some shade of red or violet. 
Pileus some shade of avellaneous, brown, or purplish-brown. 
Pileus 1-2.5 em. broad. 
Stipe 2-6 cm. long. 
Lamellae gray, at least when dry; hymenophore cespi- 
tose on dead wood. . 
Lamellae cream-colored; hymenophore gregarious among 
pine needles. 
Stipe 6 cm. or more long. 
Stipe 6-10 cm. long. 
Pileus dull-brownish; stipe light-brown. 
Pileus avellaneous, blackish-brown on the disk ; 
stipe steel-gray. 
Stipe 15 cm. long. 
Pileus 3-5 em. broad. ° 
Lamellae distant; pileus avellaneous. 
Lamellae crowded; pileus pale-avelianeous. 
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Sa ed 
BB OPN ON 
321 
. palusier. 
. cymbaliferus. 
. murinus. 
. denticulatus. 
purus. 
adirondackensis, 
niveipes. 
ochraceicinereus. 
pectinatus. 
ligniarius. 
Leaianus. 
pur pureofuscus. 
- rugosoides. 
. rutilantiformis. 
. tenuiculus. 
. subtenuipes. 
. aividiscus. 
. Semivestipes. 
epipleryginus. 
Suliginosus. 
. collybiiformis. 
. alroumbonatus. 
. galericulatus. 
. leucophaeus. 
. paludicola. 
. flavicitrinus. 
. aurantiidiscus. 
. aurantiacus. 
Sstrobilinoides. 
amabillissimus. 
fusipes. 
. elegantulus. 
. caesiialbus, 
purus. 
. occidentalis, 
. plumbeibrunneus. 
myceliosus. 
Abramsii. 
longipes. 
magnus, 
Grantii. 
