114 Thirty-eighth Report on the State Museum. 



I Pileus reddish, generally zoneless hysginus. 



I Pileus ochraceous, zoneless affinis. 



I Pileus yellow or yellowish-white, zonate insulsus. 



1 2 Stem paler than the pileus trivialis. 



12 Stem colored like the pileus cinereus. 



3 Pileus minutely tomentose,pubescent or squamulose 14 



3 Pileus glabrous or merely pruinose 21 



14 Pileus rugose-reticulated, velvety-pubescent corrugis. 



14 Pileus not rugose-reticulated 15 



5 Pileus some shade of gray or brown 16 



5 Pileus some shade of red or yellow 18 



5 Pileus white or whitish 20 



16 Plant inodorous 17 



1 6 Plant odorous glyciosmus. 



7 Pileus about one inch broad, becoming paler with age griseus. 



7 Pileus more than one inch broad, not expallent (partly), .plumbeus. 



18 Lamellae distant (partly) hygrophoroides. 



18 Lamellae close 19 



9 Pileus less than two inches broad, milk white alpinus. 



9 Pileus two inches o^ more broad, milk watery (or white) helvus. 



20 Surface of the pileus persistently velvety-tomentose. .vellereus. 



20 Margin of the pileus cottony-tomentose when young (partly) 



deceptivus. 



21 Pileus white or whitish 22 



21 Pileus some other color 24 



22 Lamellae distant or subdistant 23 



22 Lamellse crowded, dichotomous piperatus. 



23 Stem more than four lines thick, young pileus umbilicate (partly) 



deceptivus. 

 23 Stem not more than four lines thick, pileus never umbilicate. .albidus. 



24 Pileus some shade of gray or brown 25 



24 Pileus some shade of red or yellow 31 



25 Wounds of the lamellae becoming pinkish-red 26 



25 Wounds of the lamellae not becoming pinkish-red 27 



26 Pileus dingy-gray or buff-gray (partly) fuliginosus. 



26 Pileus dingy-brown (partly) lignyotus. 



27 Wounds of the lamellae becoming sordid-greenish 28 



27 Wounds of the lamellae not becoming sordid-greenish 29 



28 Plant growing on the ground varius. 



28 Plant growing on decaying wood parvus. 



29 Taste mild Gerardii. 



29 Taste acrid ... 30 



30 Pileus dry, zoneless (partly) plumbeus. 



30 Pileus moist, generally zonate pyrogalus, 



3 1 Lamellae distant (partly) hygrophoroides. 



3 1 Lamellae close or subdistant 32 



32 Taste acrid 33 



32 Taste mild or slightly acrid 34 



33 Pileus bay-red, flesh pinkish rufus. 



33 Pileus yellowish-red, flesh white platyphyllus. 



