7(2 THE AGARICACEAE OF MICHIGAN 



strings or rhizomorphs, often eccentric. SPORES very minute, 

 4-5 x 2-3 micr., elliptical-ovate, smooth, white. ODOR mild, TASTE 

 sometimes slightly bitter. 



(Dried: Cap and gills pale rufous-tan.) 



Caespitose or scattered. On very rotten wood in mixed and 

 frondose woods. Ann Arbor, Bay View, Houghton, etc. July-Sep- 

 tember. Frequent throughout the State. 



This species approaches G. adirondackensis, from which the short 

 decnrrent gills, the different lustre of the cap and the rhizomorphs 

 at the hairy base of the stem separate it; the spores too, average 

 half a micron smaller. These differences may be merely an expres- 

 sion of habitat, since the one grows mainly on rotten wood, the 

 other among leaves and humus. Another species of Peck, said to 

 grow on rotten wood, is C. leptoloma. Here also, the strigose base 

 of the stem and the rhizomorphs are about the only characters of 

 C. eccentrica which separate it. It is likely that these three species 

 are variations of one of them. 



786. Clitocybe albidula Pk. 



N. Y. State Mns. Rep. 46, 1893. 



Illustrations: N. Y. State Mus. Rep. 53, PI. C, Figs. 16-20. 



PILEUS 1-4 cm. broad, thin, convex-plane, nmbilicate, subhygro- 

 phanous, pale grayish-oroicn to whitish, the umUlicus always 

 darker and brown, glabrous, margin faintly striatulate. GILLS 

 subdecurrent, crowded, narrow, thin, sometimes forked, intervenose, 

 whitish. STEM 2-5 cm. long, 2-4 mm. thick, equal, stuffed then hol- 

 low, concolor, nbrous-toughish, even, white-mycelioid at base. 

 SPORES 5-6x3-4 micr., elliptic, smooth, white. ODOR and 

 TASTE farinaceous. 



Gregarious, in woods of hemlock and cedar. Bay View. Septem- 

 ber. Infrequent. 



A form occurs with creamy-white pileus and brown umbilicus 

 with spores the same. This form has only a faint odor, but no doubt 

 belongs here. The brown umbilicus and slightly larger spores, 

 along will) the grayish tinge in the color, separate this species from 

 the preceding two. It never becomes truly cyathiform nor infundi- 

 buliform. 



