82' THE AGARICACEAE OF MICHIGAN 



American Species of Marasmius (Jour. Mycol., Vol. 12, p. 98), Mor- 

 gan included it under Heliomyces, where it probably belongs, al- 

 though tbe gelatinous character of the trama is not very strongly 

 developed. Its peculiar spores set it off from all others ; Lloyd has 

 given us a photograph showing their stellate character. 



57. Heliomyces pruinosipes Pk. var. 

 N. Y. State Mus. Bull. 167, 1913. 



PILEUS 1-2 cm. broad, tremeUoid, convex then plane, minutely 

 pubescent, hygrophanous, dark chestnut-brown, becoming paler. 

 surface marked by convolute, crowded, obtuse ridges, not viscid. 

 FLESH thick, becoming tough and slightly horny when dry, 

 reddish-pallid. GILLS adnate running down the stem by short 

 lines, medium broad, close, thin, pallid to dingy ochraceous, becom- 

 ing brownish-yellow on drying, edge entire. STEM 3-4.5 cm. long. 

 3 mm. thick; equal, hollow, compressed, somewhat twisted and 

 canaliculate on drying, fibrous, tough, dark chestnut brown, fading, 

 clothed by a short tomentose pubescense. SPORES minute, oblong, 

 5x2.5 micr., smooth, white. TEAMA of cap of large, gelatinous, in- 

 terwoven hyphae, which in cross-section have a very refractive cen- 

 ter; that of gills of similar but more slender hyphae. ODOR and 

 TASTE mild. 



The specimen was sent by Mrs. Cahn, from Detroit, in July. The 

 description applies only to our plant. It departs from the descrip- 

 tion of Peck in that the cap does not at first possess the bright 

 orange-red colors and although our specimens were rather fresh 

 such a loss of color by fading might be expected. A more import- 

 ant difference is the distinct cerebrose surface of the pileus in our 

 plant, not mentioned at all by Peck; for the present it may be con- 

 sidered var. cerebrosus, until further data are at hand. It is evi- 

 dently rare, but there is a curious coincidence in its discovery in the 

 same year at three separate localities, viz., Vaughns and Ithaca, 

 N. Y., and Detroit, Michigan. 



