OCHRE-SPORED AGARICS. 163 



at Ithaca. The species is widely distributed in this country as well 

 as in Europe. 



Cortinarius (Dermocybe) ochroleucus (Schaeff.) Fr. This is a 

 very beautiful plant because of the soft, silky appearance of the sur- 

 face of pileus and stem, and the delicate yellowish white color. 

 It occurs in woods, on the ground among decaying leaves. The 

 plants are 4-12 cm. high, the cap 4-7 cm. broad, and the stem above 

 is 6-10 mm. in thickness, and below from 2-3 cm. in thickness. 



The pileus is convex to nearly expanded, and sometimes a little 

 depressed, usually, however, remaining convex at the top. It is dry, 

 on the center finely tomentose to minutely squamulose, sometimes 

 the scales splitting up into concentric rows around the cap. The cap 

 is fleshy at the center, and thin at the margin, the color is from cream 

 buff to buff, darker on the center. The gills are sinuate or adnate, 

 slightly broader in the middle (ventricose) in age, pale at first, then 

 becoming ochre yellow, and darker when the plant dries. The spores 

 are tawny in mass, oval, elliptical, minutely tuberculate when mature, 

 6-9 x 4-6 yu. The stem is clavate, pale cream buff in color, solid, 

 becoming irregularly fistulose in age, bulbous or somewhat ventri- 

 cose below, the bulb often large and abrupt, 1.5-3 cm. in diameter. 

 The veil is prominent and attached to the upper part of the stem, the 

 abundant threads attached over an area i cm. in extent and forming 

 a beautiful cortina of the same color as the pileus and stem, but be- 

 coming tawny when the spores fall on it. The stem varies consid- 

 erably in length and shape, being rarely ventricose, and then only 

 at the base ; the bulbous forms predominate and the bulb is often 

 very large. 



Figures 156, 157 are from plants (No. 3674 C. U. herbarium) 

 collected at Blowing Rock, N. C., during September, 1899. 



BOLBITIUS Fries. 



The genus Bolbitins contains a few species with yellowish or yel- 

 lowish brown spores. The plants are very fragile, more or less 

 mucilaginous when moist, usually with yellowish colors, and, what is 

 the most characteristic feature beside the yellowish color of the 

 spores, the gills are very soft, and at maturity tend to dissolve into 

 a mucilaginous consistency, though they do not deliquesce, or only 

 rarely dissolve so far as to form drops. The surface of the gills at 

 maturity becomes covered with the spores so that they appear pow- 

 dery, as in the genus Cortinarius, which they also resemble in the 

 color of the spores. In the mucilaginous condition of the gills the 

 genus approaches Coprinus. It is believed to occupy an intermediate 



