CLASSIFICATION OK A.OARII 9 





TASTE is often farinaceous, sometimes quite strong; thai of 0. not 

 aboracetma is bitter; in others it is mild or insipid. 



Fries divided the European species into two sections: one with 

 deeply decurrent gills and the margin oi the pileus al oral floe- 

 culose; the other with adnate or snbdecurrent -ilU and the margin 

 of the pileus naked. Peck suggested the use of the different shades 

 of pink of the mature gills as a basis for the sections. It Beems 

 to me that the character of the spores is more fundamental than 

 any of these, since the angular spores simulate those of Bntoloma, 

 the rounded ones those of Clitocybe. in this sense, there would 

 be two sections; the Angulosporae and the Globosporae. The genus 

 is not well represented in Michigan. 



Key to the Species 

 (A) Spores angular. 



(a) Pileus hygrophanous, 1-3 cm. broad, fragile. 



(b) Odor and taste farinaceous; pileus grayish-brown (moist) 605 



0. suivilis Pk. 

 (bb) Not farinaceous; pileus pinkish-white (moist). Spores smaller 

 than in the preceding. 604. V. woodianus Pk. 

 (aa) Pileus not hygrophanous. 



(b) Pileus 5-10 cm. broad, grayish-brown, often abortive. 603. C. 



abortivus B. and ('. 

 (bb) Pileus less than 5 cm. broad, whitish to gravish or smoky- 

 cinereous, 

 (c) Odor none. 



(d) Gills white then somewhat rosy; stem stuffed to hollow. 



609. r. subplanus Pk. 

 (dd) Gills dark ashy; stem solid or fibrous. 606. ('. undatus Fr. 

 (cc) Odor farinaceous; gills gray at first, 

 (d) Stem slender, 3-6 cm. long, solid; pileus glabrous. 60 v C. 



albogriseus Pk. 

 (dd) Stem short, 1-2 cm. long, solid; pileus silky. 607. O. >ni- 

 cropus Pk. 

 (AA) Spores not angular. (Slightly in C. novaboracensis.) 



(a) Pileus somewhat viscid (moist), white or whitish, 3-7 cm. br 



611. C. orcella Fr. 

 (aa) Pileus not viscid, 

 (b) Taste bitter; pileus concentrically-cracked, brownish-graj ; ^-ills 



deeply decurrent. 612. c. novaboracensis Pk. 

 (bb) Taste not bitter. 



(c) Plants vers caespitose, fragile, pileus 5-15 cm. broad, whitish, 



moist. 613. C. caespitosus I'k. 

 (cci Plants gregarious, firm; pileus 3-10 cm. broad, white or 

 tinged gray. 610. ('. prunulus Fr. - 



