SUBSECTIOX HYGROPHORUS 263 



2. Spores 11-15 X 5.5-7 p 157. //. vernal is 



2. Spores smaller 3 



3. Pileus rufous to salmon color, 3-12(15) cm broad; gluten copious on 

 stipe; under hardwoods L58. //. subsidmonius 



3. Not with above combination of characters 4 



4. Odor aromatic; stipe narrow and with copious slime . . 152. //. COSSUS 

 4. Not as above 5 



5. Stipe (5)10-20 mm thick; odor slightly of almonds; pileus tawny to 

 cinnamon brown 159. //. variicolor 



5. Stipe typically thinner, odor none 6 



6. Pileus whitish with a brown disc and minutely virgate from blackish 



fibrils ' 160. //. oirgatulus 



6. Not as above 7 



7. Pileus gravish vellow or slightlv tawny; lamellae white, distant and nar- 

 row 161. H. elegantulus 



7. Pileus distinctlv tan to ferruginous at least on disc 8 



8. Growing under hardwood; disc of pileus pinkish tan, margin pallid 



162. H. laurae 



8. Growing under conifers and in bogs; pileus ferruginous to paler red- 

 brown on disc, margin pale tan to buff 163. H. discoideus 



157 



Hygrophorus vernalis Sm. 



Univ. Mich. Herb. Contr. 5: 20. 1941 



Illustrations : 

 Fig. 78. 

 Univ. Mich. Herb. Contr. 5, pi. 4. 



Pileus 3-5 cm broad, obtuse when young and with an incurved 

 white downy-pubescent margin, obtusely umbonate in age, margin 

 "pale vinaceous fawn," the disc "vinaceous buff" and with watery spots 

 when young, in age flushed over all with brighter pale vinaceous colors, 

 glabrous, viscid. Context thick, concolorous with the surface or whitish 

 vinaceous; odor and taste not distinctive. 



Lamellae arcuate when young, long decurrent in age, whitish 

 ( paler than the margin of the pileus ) , close, 50-55 lamellae reach the 

 stipe, narrow (3.5 mm more or less), edges even. 



Stipe 4-6 cm long, 7-9 mm thick, equal or slightlv enlarged at the 

 base, stuffed or becoming hollow, lower part covered bv a thin layer of 

 gluten, which forms sordid yellowish patches of varnish over the basal 

 area, appressed cottony fibrillose to the apex ( not punctate above ) , sor- 

 did whitish or concolorous with the gills, darker in age. 



Spores 11-15.5 x 5.5-7 n, ellipsoid, at times oblong-ellipsoid, 

 smooth, yellow in Melzer's reagent. Basidia 50-70 X 7-11 /x, 2- and 

 4-spored. Pleurocystidia and cheilocystidia none. Gill trama divergent, 

 hyphae 3-6 jx broad. Cuticle a broad ( 250-350 /x ) , gelatinous zone with 



