Part 5, 1916] AGARICACEAE 
Hymenophore not decidedly cespitose. 
Pileus 1-4 em. broad. 
Surface glabrous, pale-ochraceous. 
Surface subglabrous, yellow or yellow tinged with browa, be- 
coming smoky-flavid. 
Surface floccose-pulverulent, yellow. 
Pileus 5-7 cm. broad. 
Stipe 4-6 mm. thick; lamellae flavous. 
Stipe 15 mm. thick; lamellae white. 
Pileus fulvous, reddish, or reddish-brown. 
Pileus 1-2.5 em. broad. 
Lamellae subdistant. 
Lamellae crowded. 
Lamellae serrate on the edges. 
Lamellae not serrate on the edges. 
Lamellae pale-cinnamon-colored, spinuliferous. 
Lamellae white, not spinuliferous. 
Pileus 2.5-5 cm. broad. 
Surface distinctly viscid, glabrous. 
Surface not viscid, but densely tomentose. 
Surface neither viscid nor tomentose. 
Lamellae denticulate or eroded on the edges. 
Lamellae crowded; stipe 6—10 mm. thick. 
Lamellae subdistant; stipe 4-6 mm. thick. 
Lamellae entire on the edges. 
Hymenophore densely cespitose. 
Hymenophore gregarious. 
Pileus 5-10 em. broad. 
Pileus some shade of gray, brown, or black. 
Surface dry or slightly moist, entirely glabrous even under a lens. 
Pileus umbilicate or becoming depressed. 
Stipe 1-2 mm. thick; pileus 1-2.5 cm. broad. 
Lamellae brownish-lilac. 
Lamellae grayish-white; stipe whitish at the base. 
Pileus blackish-brown; spores subglobose. 
Pileus dark-avellaneous; spores ellipsoid. 
Lamellae white: stipe fulvous at the base. 
Stipe 24 mm. thick; pileus 2.5-5 cm. broad. 
Surface brownish when moist, whitish when dry; odor dis- 
tinctly farinaceous. 
Surface livid-gray, becoming wale on drying. 
Surface dull-blackish-brown, brown when dry. 
Pileus convex or umbonate. 
Pileus grayish-drab, darker on the umbo, margin striate; 
lamellae free, pale-ochraceous; stipe white, shining. 
Pileus not as above. 
Pileus 0.5-2.5 em. broad. 
Lamellae dark-rosy-isabelline. 
Lamellae brownish. 
Lamellae white or Pe yellow. 
Stipe 1-2.5 cm. long. 
Lamellae narrow. 
Lamellae broad. 
Stipe 5-10 cm. long. 
Pileus 3~6 em. broad. 
Lamellae narrow, crowded. 
Pileus light-brown; stipe 2.5 mm. thick. 
Pileus fuliginous-browe ; stipe 4-6 mm. thick. 
Lamellae rather distant, broad. 
Surface viscid or clothed with minute or conspicuous hairs or fibrils. 
Surface viscid, glabrous. 
Stipe 2-3 cm. long, not radicate. 
Stipe 10-20 cm. long, radicate. 
Surface dry, clothed with minute or conspicuous hairs or fibrils. 
Pileus 8-12 mm. broad. 
Pileus 1.5—-4 em. broad. 
Lamellae narrow, crowded; pileus avellaneous. 
Lamellae broad, subdistant; pileus dark-brown. 
Pileus 7.5-10 em. broad. 
II. SPECIES OCCURRING ON THE PACIFIC COAST 
Pileus white or whitish. 
Hymenophore arising from a tuber. 
Hymenophore not arising from a tuber. 
Lamellae narrow, crowded. 
Lamellae broad, distant. 
Pileus some shade of yellow or isabelline. 
60. 
61. 
an aan a 
AA AR A A 
ANA AN 
AAD 
ANA A AN 
353 
« CYEMOTaCEUS. 
. exsculptus. 
. chrysopeplus. 
. subflavifolius. 
. rUgOSOCEDS. 
. agricola, 
. lentinoides. 
. lachnophyllus. 
. tortipes. 
. velutipes. 
. tenuipes. 
microspermus. 
hygrophoroides. 
. acervalus. 
. dryophilus. 
. luxurians. 
. myriadophyllus. 
. alratoides, 
. maurus. 
. detersibilis. 
. expallens, 
. ignobilis. 
. atratus. 
. discipes. 
. Earleae. 
. fuscolilacinus. 
. uniformis, 
. pilularius, 
. familia. 
. Volkertii. 
. fuliginellus, 
. dentatus, 
unakensis. 
. radicatus. 
albipilatus. 
oculus. 
alcalinolens. 
. platyphyllus. 
G. tuberosus, 
trullisatus. 
. albogriseus. 
