788 THE AGARICACEAE OF MICHIGAN 



Color, like size, shape and habitat, is very variable, but Fries did 

 not consider any microscopic characters, hence it is likely he has 

 been too conservative in this series, and sooner or later several 

 species will be segregated. Maire (1. c.) has already separated 

 M. viscosa Maire, a plant of the coniferous regions. 



836. Mycena clavicularis Fr. 



Syst. Myc, 1S21 ivar. alba, N. Y. State Mus. Kep. 28, 1885). 



Illustrations: Fries, "Icones, PI. 84, Fig. 1. 

 Cooke, 111., PI. 208. 



Var. alba Pk. PILEUS 5-7 mm. broad, conico-campanulate. 

 dull-white, not changing, sulcate-striate, pruinose, dry (not viscid), 

 without pellicle. FLESH membranaceous. GILLS adnate, mod- 

 erately broad, close, white, edge obscurely flocculose. STEM 5-6 

 cm. long, filiform, .5 mm. thick, pellucid-whitish, riscirf when moist, 

 glabrous, long-rooting, even, fistnlose, flaccid, flexuous, loosely hairy 

 below. SPORES 7-9 x 5 micr., elliptical, obtuse at ends, smooth, 

 white. CYSTID1A none. Sterile cells on edge of gills inflated, 

 rounded-pyriform on narrow stalks, 15-30 micr. in diam. BASIDIA 

 about 24 micr. long, subclavate, 4-spored. ODOR none. 



Caespitose or singly, attached to fallen leaves by the rooting, 

 hairy stem, in mixed woods. New Richmond. September. Infre- 

 quent. 



Var. luteipes nov. var. PILEUS 10-15 mm. broad, convex-cam- 

 pannlate, obtuse, striate up to the papilla, silky, not viscid, sulphur- 

 yellow with olivaceous or green shades, brownish or grayish in age. 

 GILLS adnate, uncinate or areuate-subdeenrrent, yellowish, flesh 

 color or rufescent in age, rather narrow and distant, edge entire. 

 STEM 5-8 cm. long. 1-1.5 mm. thick, slender, equal, hollow, tough, 

 pruinose at apex, viscid, darker yellow than pileus, rooting at the 

 somewhat attenuated base. SPORES broadly elliptical, 11-12x7-8 

 micr., smooth, white in mass. 



On the ground among debris, mosses, etc. Bay View, Detroit. 

 I J are. 



I/, clavicularis Fr. is doubtless a composite species. Fries, him- 

 self, considered it composed of a number of color forms, with caps 

 either whitish, pale yellow or fuscescent. Peck named three 

 varieties: alba, cinereus and filipes. The size of the spores seems 

 to be omitted by authors. The two varieties described above are 

 probably distinct species but further data on all the supposed 



