180 THE AGARICACEAE OF MICHIGAN 



unibonate, more or less irregular, pinkish-brown or reddish on disk, 

 white on margin, glutinous when fresh, glabrous, eveu, margin at 

 first involute. FLESH thickish, white. GILLS adnate to decur- 

 rent, subdistant, rather narrow, white or tinged with cream -flesh- 

 color, trama of divergent hyphae. STEM 3-8 cm. long, 6-12 mm. 

 thick, equal or tapering downward, solid, glutinous, white or yel- 

 lowish-white, upper half often squamulose-scabrous, the apex dotted 

 with scabrous points. SPOKES elliptical, smooth, apiculate, 7 9x 

 4-5.5 micr,, white in mass. BAS1DIA slender, about 38xG micr. 

 ODOR and TASTE mild. 



Gregarious or subcaespitose. On the ground in frondose woods, 

 thickets, etc., among fallen leaves. Detroit, Ann Arbor, New 

 Richmond. August-November. Frequent. 



This species usually has a cap which is wider than the length of 

 the stem, while //. eburneus usually has an elongated stem and nar- 

 row pileus. There is some discrepancy in the spore-measurements 

 as given by Morgan and Peck. The latter author gives them as 

 6-7.5 micr. long. Such discrepancy usually points to different 

 species studied by the different authors, but in the genus Hygro- 

 phorus, as in some other white-spored genera, the spores often ma- 

 ture slowly, and it is often not easy to distinguish mature from 

 immature plants, so that the best of observers may disagree. H. 

 laurae is said to stain one's angers as if with sumach. (S. Davis. 

 Rhodora, 13, p. 63, 1911.) 



158. Hygrophorus flavodiscus Frost (Edible) 



N. Y. State Mus. Rep. 35, 1884. 



Illustrations: Peck, N. Y. Shite Mus. Mem., Vol. 3, PL 50. Fig. 1-6. 

 Hard, Mushrooms, Fig. 167, p. 210, 1908. 

 Murrill, Mycologia, Vol. 4, PL 56, Fig. 11. 



PILEUS 3-7 cm. broad, convex or nearly plane, glutinous when 

 fresh, pale yellow or reddish-yellow on disk, white elsewhere, glab- 

 rous, even, margin at first involute. FLESH white. GILLS adnate 

 to decurrent, subdistant, white sometimes with a slight flesh-colored 

 tint, trama of divergent hyphae. STEM 3-7 cm. long, 6-12 mm. thick, 

 nearly equal, solid, very glutinous, apex with white scabrous points, 

 white or yellowish below. Spores elliptical, inequilateral. 6-7.5x4-5 

 micr., white. 



Gregarious. On the ground in hemlock and beech woods. New 

 Richmond. September. 



