356 SECTION HYGROPHORUS 



Observations — The thin, white, fibrillose veil, dry stipe, large 

 spores, decurrent gills, the orange to pinkish color of the pileus and 

 yellow stains on the stipe are distinctive. When old the fruiting bodies 

 bear some resemblance to those of faded specimens of H. speciosus, but 

 that species has a slimy veil. The same objection holds for H. nitidus 

 Fr. as well as H. lucorum Kalch., although Niiesch's interpretation of 

 the latter seems very close to H. pseudolucorum. However, Kalch- 

 brenner's original description pretty well excludes any dry-stiped Hif- 

 grophorus. In addition, the spores from a deposit measure larger than 

 given anywhere for H. lucorum. 



The mycorrhizal association is very likely with larch. H. lucorum 

 is said to have a dry stipe by Kiihner and Romagnesi ( 1953 ) , but the 

 spore size as given by them is too small for our species. H. laricinus Pk. 

 is close to H. pseudolucorum but differs in tawny red color and smaller 

 spores. 



216 



Hygrophorus vinicolor, sp. nov. 



Illustration: 

 Fig. 112. 



Pileus 2.5-5 cm latus, subviscidus, cito siccus, colore variabilis, 

 disco "wood brown," "vinaceous buff" prope marginem; odore aroma- 

 ticus, gustu ingratus; lamellae decurrentes, paene "pale pinkish cinna- 

 mon," distantes, latae; stipes 3-5 cm longus, 10-20 mm crassus, albus, 

 siccus, rosaceo-pruinosus; sporae 10-14 X 6-8 /x, ellipsoideae. Speci- 

 men typicum in Herb. Univ. Mich.; ledum in Cape Horn Summit, 

 Sawtooth Mts., Idaho, Aug. 25, 1954, A. H. Smith 47116. 



Pileus 2.5-5 cm broad, obtuse with an inrolled margin, becoming 

 pale or nearly so, color variable, "wood brown" on disc and "vinaceous 

 buff" toward margin, margin rather pink in age at times, surface slightly 

 viscid but soon dry. Context white or vinaceous near cuticle; taste dis- 

 agreeable, odor aromatic, as in H. agathosmus, no color changes when 

 bruised. 



Lamellae decurrent, near "pale pinkish cinnamon," distant, broad. 



Stipe 3-5 cm long, 10-20 mm thick, white throughout, dry, surface 

 minutely pruinose at first and the pruina developing a pinkish tone, 

 solid. 



Spores 10-14 X 6-8 /x, ellipsoid, smooth, thin-walled, hyaline in 

 KOH, yellowish hyaline in Melzer's reagent. Basidia 50-70 X 6 9 /x, 

 4-spored, pedicels flexuous. Pleurocystidia and cheilocystidia none. Gill 

 trama of divergent hyphae ( young gills ) , in old gills appearing almost 

 interwoven. Cuticle of pileus rather indistinct and only subgelatinous as 



