Jan. 1907] The Genus Cortinaruis , with Key 3T 



ee. Pileus, stem and gills lilac ; spores 9-10/^ 



C. HI acinus Pk. 

 eee. Pileus, stem and gills violaceous at first; spores 10- 



I2/A long C. rimosus Pk. 



aaa. Spores 4-9/^ long; if longer, plants are whitish or vio- 

 laceous 

 b. Stem and pileus scaly or shreddy 



c. Scales red (scarlet to vermillion) . . . .C. bolaris Fr. 

 cc. Scales brown to blackish 



d. Plant large, watery-spongy, soon dark choco- 

 late colored C. squammulosus Pk. 



dd. Plants of medium size, wood-brown 



C. pholideus Fr. 

 bb. Stem not scaly. 



c. Stem with more or less persistent annular rings, or 

 peronate 



d. Plants large, 2-8 an. or more tall; pileus in 

 proportion 



e. Pileus watery-cinnamon (moist) ; gills very distant 



C. distans Pk. 

 ee. Pileus buff, ochraceous, clay-colored or tawny 

 f. Gills at first yellow or yellowish 



g. Pileus at first buff; stem peronate by the thin uni- 

 versal veil C. Havifolius Pk. 



gg. Pileus ochraceous to ferruginous; subannulate. . 



C. Morrisii Pk. 



ggg. Pileus at first tawny-yello\Vj with pointed squam- 



ules on disk ; peronate by tawny-yellow universal 



veil C. annulatns Pk. 



f f. Gills at first brownish or ochraceous ; pileus rufous- 

 ochraceous 



g. Spores elliptical C. hivelus Fr. 



gg. Spores spherical, minute, 4-5ju, diameter 



C. suhhivelus sp. nov. 



eee. Entire plant saffron-yellow C croceocolor Kauff. 



eeee. Pileus some shade of blue or purple when young, buff to 

 tan when old 



f. Plants stout, umber-purple to buff; pileus punctuate in 



or near swamps, in large troops . . . .C. umidicola Kauff. 



ff. Mature plants rather slender; pileus fawn-colored, 



tinged lavender when young, not punctate ; common in 



hemlock woods C. deceptivtis Kauff. 



dd. Plants small, subannulate; pileus less than ^-4 

 cm broad 



e. Pileus fuscous, covered with white villose fibrils 



C. paleaceus (Weinm.) Fr. 



