574 THE AGARICACEAE OF MICHIGAN 



615. Leotonia lampropoda Fr. 



Svsi. Mycol., L821. 



Illustrations : Cooke, 111., PL 331. 



Gillet, Champignons de France, Xo. 434. 

 Kick. mi. Pliitterpilze, PI. 73, Fig. 7. 

 Swanton, PI. 42. Figs. 3-5, 1909. 



PILEUS 1-3 cm. broad, convex then plane, umbilicate or de- 

 pressed, bluish-Mack to jet-black when young, becoming snioky- 

 fuscous when old, becoming minutely squamulose by the breaking 

 up of the cuticle, innately-fibrillose at first, squamules dense in 

 center, never striate, not papillate, sometimes rimose, margin de- 

 curved then raised. FLESH at first bluish-black, then gray to 

 white, subhygrophanous, thin. GILLS adnate-seceding, moderately 

 broad, subdistant, ventricose, white at first then rose-colored, edge 

 entire and concolor. STEM 2.5-5 cm. long, 1-3 mm. thick, equal or 

 tapering upward, stuffed then hollow, often compressed, and 

 grooved, straight or curved, glabrous, even, firm, elastic, bluish- 

 black ill first, becoming fuscous, white mycelioid at base, apex not 

 punctate. SPORES variable in size, tuberculate, angular, 9-13x6-7 

 micr., rosy in mass. CYSTIDIA none. ODOR and TASTE none. 



Gregarious. On the ground, wet places in mixed hemlock and 

 maple woods. Pay View. New Richmond, Marquette. July-Septem- 

 ber. Frequent in conifer regions. 



Easily known by its bluish-black color when young, the lack of 

 si lint ions on the pileus and the rather tirni stem. It approaches 

 /,. asprella, and I at first referred it to that species, but the margin 

 of the pileus is never striate and the gills are not gray. It has the 

 colors of L. serrulata but the edge of the gills does not become black- 

 dotted. The figures of European authors do not illustrate our 

 planl well; this is not surprising, since it is always reported as 

 growing "among grass." In fact, the majority of species in England 

 are reported from grassy places, while with us the high winds and 

 dryer conditions seldom favor their appearance in fields or meadows, 

 and i he forest tonus are slightly different in appearance. It agrees 

 well with i he description of Fries given iu his Monographia. Ricken 

 gives broader spores; those of our plants agree with the size given 

 by Saccardo. 



