;1S THE AGARICACEAE OF MICHIGAN 



long, about 2 mm. thick, slender, equal, hollow, silk y -fib rillose and 

 subannulate by the whitish veil, concolor within and without:' 

 SPORES large, broadly elliptical, 11-12.5x6.5-7.5 niicr., scarcely 



rough. 



"Mossy ground. Catskill Mountains. New York. September. 



"The species is related to G. nigrellus, from which it differs in its 

 broad gills which are paler in the young plant and in its larger 

 spores." The Michigan collections formerly referred here differ 

 somewhat and are described below, the gills are at first whitish or 

 pallid. 



**Gills at first whitish or pallid. 



429. Cortinarius iliopodius Fr. 



Syst. Myc, 1821. 



Illustration: Cooke, 111., PL 839 (form). 



PILEUS 2-3 cm. broad, cainpanulate-subexpanded, mammillate, 

 hygrophanous, sorghum-brown (Ridg.), with blackish umbo when 

 moist, avellanus (Ridg.) when dry, and then canescent-fibrillose 

 and silky shining, margin at first incurved and white-silky from the 

 veil. FLESH brownish (moist), thin, scissile. GILLS pallid at 

 first then cinnamon (Ridg.), adnate, rounded behind, ventricose, 

 rather broad, thin, close to su.bdistant. STEM slender, elongated, 

 5-9 cm. long, 3-4 mm. thick, equal, stuffed, at length flexuous, dec- 

 orated by the delicate white silky remnants of the veil, pale in- 

 carnate, fuscescent, fuscous-brown or ochraceous toward base within, 

 cortex subcartilaginous. SPORES elliptical-almond shaped, 

 slightly rough, 10-12 x 5-6.5 micr., pale yellowish-cinnamon. ODOR 

 and TASTE mild. 



Scattered-gregarious on sphagnum swamp of spruce and tama- 

 rack. North Elba, Adirondack Mountains, New York. Collection 

 Kauffman. September, 1914. Infrequent. 



It soon fades to the colors of G. paleaceus, with a slight drab tint. 

 It differs from G. paleaceus in its scattered mode of growth, in its 

 sphagnum habitat and especially in its large spores. In shape and 

 size it imitates G. decipiens, but is usually more slender. The spe- 

 cies .as conceived by Fries is evidently very variable and the plant 

 described above is a definite form. In Monographia, Fries speaks 

 of the yellow flesh of the interior of the stem. In Systema, he says 

 the stem is occasionally fuscous, lilaceous, etc. In the plates at the 



