CLASSIFICATION OP AGARICS g| 



instititious. SPORES oblong-lanceolate, 8-10x4-5 micr., smooth, 

 w hite. nix >K cone. 



Gregarious od fallen leaves of oak, etc., twigs and Bticks in w I-. 



Ann Arbor. September. 



Known by its long, filiform black stem and the white nmbilii 

 which is in marked contrasl to the color of the resl of pileus. 



Heliomyces Lev. 

 (From the Greek, helios, the sun, and myphes, a fungus.) 



Flesh ti-emelloid, subcoreaceous, reviving in moisl weather. Pileus 

 rugose, suleate or reticulate-ridged. Stem central, confluent with 

 the pileus, tough. No veil, dills with acute edge. 



Marasmius-like plants with a gelatinous trama, asually lignicol- 

 ous. The species are few and have been poorly studied; probably 

 mosl of them occur in the tropical regions. Ii is highly desirable 

 to know the microscopic structure of the species so far referred 

 here. Pleurotus subpalmatus is closely related to this genus, and 

 should perhaps he included. Only two species are represented in 

 niv collections. 



56. Heliomyces nigripes (Schw.) Morg. 



Epicrisis, 1836-38. 



Illustrations: Hard. Mushrooms. Fig. li:>. p. ].Y_'. L908. 

 Lloyd. Myc. Notes, No. 5, Pig. L9 and 20, p. 16. 



PILEUS 1-2 cm. broad, very thin, pun chalk-white, convex then 

 expanded, pruinose. ru.uulosesuhsulcate ; trama composed of ! 

 gelatinous hyphae much interwoven. GILLS adnate or adnato 

 decurrent, suhdistaut. anequal, intervenose, some forked, white, 

 rufescent. STEM 2-4 cm. long, L-2 mm. thick, enlarged and asually 

 compressed above, tapering downward, instititious, cartilaginous- 

 tough, hind,-, white-pruinose ;it tirst. minutely tubular, black within. 

 SPORES coarsely stellate. 3-5 rayed, hyaline, 8 9 micr. diam. I N S 

 TIDLA none. 



On sticks, stems of Equisetum, fallen leaves, etc., in mixed w 

 New Richmond. September. 



In age the colors of the whole plant change to alutaceous, T1 



species h;is usually heeii referred t<» Ma ra-mi i u--. h i- an Ami 



1 > 1 • i lit and was placed in thai genus by de SchweinitZ. In his X' >rf h 



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