MICHIGAN ACADEMY OF SCIENCE. 
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(cl) Basidia forked or divided by walls into 4 cells in various ways; 
plants usually gelatinous, horny when dry Tremellales. 
(Not included in the keys.) 
(d) Basidia clavate or subcylindrical, noil-septate.. .Agaricales. (1.) 
AGARICALES. 
(1) Hymenophore* not differentiated, basidi^ scattered on a loose layer 
of hyphae. (Not included, seldom found) Hypochnaceae. 
(1) Hymenophore in form of gills, mostly fleshy plants. 
Agaricaceae. (e) 
(1) Hymenophore in the form of erect branches or on an erect single 
club Clavariaceae. (f ) 
(1) Hymenophore in form of wrinkles, warts, spines or tooth-like 
plates which form on one surface of the fruit-body ; corky, woody, 
leathery or fleshy Hydnaceae. (g) 
(1) Hymenophore in the form of pores or reticulations on the lower 
side of the fruit bodv; woodv, leathery, corkv or fleshv. 
Polyporaceae. (h) 
(1) Hymenophore even, its surface not differentiated like the preced- 
ing; mostly leathery, tough or woody, sometimes waxy-fleshv. 
Theleplioraceae. (k) 
( Agaricaceae .) 
(e) Spores mostly white (5) 
(e) Spores ochre to cinnamon or rust-colored (21) 
(e) Spores flesh-color to roseate or salmon-color (26) 
(e) Spores purple-brown in mass (30) 
(e) Spores black in mass (33) 
WHITE-SPORED AGARICS. 
5. Gills of waxy consistency: Hygrophorus. 
5. Gills not truly waxy: ’.(6) 
6. Plants soft and fleshy, decaying: (7) 
6. Plants toughish, corky, or woody; thin plants shrivel on drying, 
but revive when moistened (IS) 
7. Gills thick, narrow and forked dichotomously. C anther ellus. 
7. Gills thinner (S) 
S. Trama of pileus of both globular and filamentous cells (9) 
S. Trama fllamentous thruout when young -(10) 
9. With milky juice : Lactarius. 
9. Not with milky juice: Russula. 
10. Stem eccentric, lateral or wanting: Plcurotvs. 
10. Stem central:' /in 
* The term “hymenophore” is used to designate that portion of the fruit-hodv wlrch bear* the 
hymenium directly, e. g. gills, pores, spines, etc. 
