142 NEW YORK STATE MUSEUM 



KEY TO THE SPECIES 



Plants terrestrial i 



Plants lignatile 12 



Plants growing on or among mosses minima 



I Spores ferruginous .2 



I Spores fuscof erruginous 5 



2 Pileus 2 inches or more broad caperata 



2 Pileus less than 2 inches broad 3 



3 Pileus hygrophanous rugosa 



3 Pileus not hygrophanous 4 



4 Pileus slightly striate on the margin filaris 



4 Pileus even on the margin togularis 



5 Pileus squamulose angustipes 



5 Pileus glabrous 6 



6 Pileus viscid when moist. aggericola 



6 Pileus not viscid 7 



7 Pileus subochraceous 8 



7 Pileus not subochraceous 9 



8 Annulus persistent, lamellae very broad temnophylla 



8 Annulus fugacious, lamellae narrow howeana 



9 Stem solid j ohnsoniana 



9 stem hollow 10 



10 Pileus white, commonly rimose areolate vermiflua 



10 Pileus not pure white, commonly even 11' 



II Spores more than .0003 of an inch long praecox 



II Spores less than .0003 of an inch long duroides 



12 Pileus and stem squamose or squamulose 13 



12 Pileus alone squamose or squamulose t8 



12 Pileus neither squamose nor squamulose 21 



13 Pileus viscid when moist 14 



13 Pileus not viscid 16 



14 Pileus with red or purple hues when young ornella 



14 Pileus with no red or purple hues 15 



IS Pileus brown or yellowish brown albocrenulata 



15 Pileus bright yellow adiposa 



15 Pileus lemon yellow limonella 



15 Pileus whitish with dense tawny erect scales squarrosoides 



16 Pileus more than i inch broad 17 



16 Pileus not more than i inch broad erinaceella 



17 Pileus with squarrose tawny scales squarrosa 



17 Pileus with superficial pale yellow scales flammans 



18 Pileus viscid when moist comosa 



18 Pileus not viscid 19 



19 Annulus well developed, persistent spectabilis 



19 Annulus slight, fugacious 20 



20 Stem hollow. curvipes 



20 Stem solid lutco folia 



21 Pileus dry lutea 



21 Pileus hygrophanous 22 



1 



