CLASSIFICATION OF AGARICS 



l l' Hi micr. in diameter. The young stem has ;i waterj juice which 

 is .it ii ist dark colored. The tinl of blackish blue on young cap and 

 .stem is common to both forms. 



863. Mycena praelonga Pk. 



V Y. State Cab. Rep. 23, L872. 



Illustration: Atkinson, Mushrooms, Fig. 94, p. 94, 1900. (Aa 

 l/. polygramma. i 



PILEUS 5-15 nun. broad, al first BubcylindricaJ then conic-cam- 

 panulate or Bubexpanded, umbonate, glabrous, Btriate, dark brown 

 with <i leaden tint. GILLS adnate, uncinate, arcuate-ascending, 

 narrow, close to snbdistant, white, al length subcinereous. STEM 

 \rv\ Long, l!»'_'i> cm. long, .5-1 mm. thick, filiform, firm, innately 

 striatulate, glabrous, hollow, tinged rufous-brown, white :it apex, 

 rooting in the sphagnum. SPORES 8-9x5-6 micr. when mature, 

 subglobose or broadly elliptical, smooth, white. CYSTIDIA only 

 on edge of ijills. flask-shaped, with narrow, acuminate neck about 

 15x12-14 micr. 



Gregarious. <>n sphagnum in tamarack swamps; local. Ann 

 Arbor. May-June. 



This species has been referred by Atkinson to l/. polygramma IV. 

 It is known by its very long slender stem, by the leaden tint of the 

 brown cap, and by the microscopic characters. Manj of the bog 

 species develop these long stems, apparently tflie resull of the moist- 

 ure present. 



Section IX. Filipede8. Stem filiform, flaccid, somewhat tough, 

 rooting, dry, juiceless. Gills whitish or tinged with the color of the 

 cap. Pileus not hygrophanous. 



Stem commonly very long in proportion to pileus; very slender, 

 tense and straighl when fresh, collapsing with age because of the 

 flaccid texture; growing on the ground among mo ind gi 



singly, i. e., not caespitose. [nodorous. Sometimes nol easily dis 

 tinguished from those of the Fragilipedes which have slender, Ali- 

 form stems: and from the Adonidae, which differ, however, in the 

 persistently white gills. A few brightlj colored species nre in- 

 cluded here, which might perhaps be as well placed nnder the 

 Adonidae. 



