568 THE AGARICACEAE OF MICHIGAN 



Section XI. Globosporae. Spores rounded, neither angled nor 

 tubercular. 



610. Clitopilus prunulus Fr. (Edible) 



Svsi. MycoL, 1821. 



Illustrations: Atkinson. Mushrooms, Fig. 135, p. 142, 1900. 

 Bard, Mushrooms, Fig. 200, p. 248, 1908. 

 X. V. Slate Mus. Rep. 48, PI. 14, 189*;. I Sot. ed. 

 Swanton, Fungi. PL 42, p. 131, 1909. 



Ricken, Blatterpilze, PL 27, Fig. 5 (as Paxillus prunulus). 

 Clements, Minn. Mushrooms. Fig. 34, p. 58, 1910. 

 Cooke, 111., PL 322. 



"PI LEUS 5-10 cm. broad, at first obtuse, convex then nearly plane, 

 firm, dry, pruinate, white to dark-gray, often eccentric, margin even 

 and often wavy. FLESH white. GILLS deeply decurrent, suodis- 

 tant, narrow, white then flesh-colored. STEM 3-8 cm. long, 5-15 mm. 

 thick, solid, naked, striate, subequal or tapering, sometimes ven- 

 trici.se. SPORES subfusiform to subelliptical, pointed at ends, 

 10-12 x 5-7 micr., smooth, with three deep longitudinal furrows, 

 tinged salmon. ODOR and TASTE farinaceous." 



(1 round in open woods. July-September. Ann Arbor, Lansing. 

 Infrequent. 



The general appearance is that of C. orcella but its cap is firm 

 and not viscid and the stem is glabrous. Massee and Hard give the 

 spores too small. Only Hennings, in Engler and Prantl, and Ricken 

 mention the characteristic furrows of the spores. It has not been 

 seen by me in abundance and is apparently rather rare in the State, 

 lis edible qualities are highly praised. In France it is called the 

 "Mousseron" by the peasants. An abortive form is described by 

 Mcllvaine. 



