32 THE AGARICACEAE OF MICHIGAN 



1. Nyctalis asterophora Fr. 



Epicrisis, 1836-38. 



Illustrations: Cooke, 111., PI. 1132, B. 



Gillet, Champignons de France, No. 19.7. 



Michael, Fiihrer f. Pilzfreunde, Vol. II, No. 81 (as N. 



lycoperdioides) . 

 Ricken, Blatterpilze, PL 2, Fig. 6. 

 Murrill, Mycologia, Vol. 6, PI. 129. 

 Hard, Mushrooms, p. 204, Fig. 162. 

 Plate I of this Report. 



PILEUS 1-2 cm. broad, at first subglobose then hemispherical, 

 whitish, floccose, at length dingy oroionish and pulverulent. FLESH 

 pallid, moist, rather thick. GILLS adnate, distant, rather narrow 

 and thick, obtuse, sometimes forked, whitish or dingy, frequently 

 not developed. STEM 2-3 cm. long, 3-8 mm. thick, relatively stout, 

 stuffed then hollow, pruinose or silky, whitish then brownish, often 

 curved. SPORES often lacking by reason of the undeveloped 

 hymenium, elliptical, smooth, (> xl micr., white. CHLAMYDO- 

 SPORES on surface of pileus, etc., abundant, brownish, spiny. 

 12-18 micr., globose. ODOR and TASTE farinaceous. 



Parasitic: on Russula nigricans, Bay View. August-September. 

 Infrequent or local. 



An interesting case of a parasitic mushroom ; it has an entirely 

 different structure from that of the host mushroom on which it 

 grows. For other instances of parasitic mushrooms see Stropharia 

 epimyces, Volvaria Loveana, Boletus parasiticus, etc. 



Cantherellus Fr. 



(From the Greek kdntharos, a vase or cup, referring to the shape 

 of the mature pileus.) 



Spore-mass white or yellowish-tinged; Gills forked, fold-like or 

 almost ridge-form (except 0. aiirantiacus), obtuse on edge; stem 

 central, confluent with the pileus; veil none. 



Fleshy, putrescent, terrestrial mushrooms, with a more or less 

 turbinate, or vase-shaped pileus, in some species almost membran- 

 ous, on whose outer side the reduced gills run down the stem in 

 the form of fold-like, thick ridges or elevations, sometimes markedly 

 dichotomously forked, sometimes almost entire. They approach 



