CLASSIFICATION OP A.GARK 



(iills dectirrentj or adnate-decurrent. Pileus more or U»mh / ■ 

 branaceous, its margin al tirst either incurved <>r struighl -ij>|»i« — •-•!. 



Epiphytal, lignicolous or terrestrial; putrescent plants, with fen 

 exceptions -^ i ■ • .- 1 1 1 or minute. V'erj dosel> related '" Collybin when 

 the margin of the pileus is al flrsl incurved; and to Mycena when it 

 is straight; differing from these by the decurren! gills Toughish, 

 reviving species are referred t" Marasmius. Thej differ from 

 Clitocybe by the cartilaginous character "i the stem. 



The PILEUS varies conical, hemispherical, convex or campann 

 late, often <|uiic expanded in the Collybiariae, .mil nsuall} marke<] 

 by ,i distinct umbilicus which becomes widened in some -\»-> <■>■- t«» 

 inf undibuliform ; some species shon the iimbilicate character onlj 

 in occasional specimens, e. g., 0. nracUlimn, while the other «[i 

 mens are obtuse or somewhal papillate. Its color is often pure 

 white; it may be gray, fuscous, brown, yellow, orange or reddish. 

 h is generally hygrophanous ;m<l then stri;ii»- when moist. The 

 Burface is usually glabrous or with a verj minute pubescence 

 which is rarely glandular. The GILLS are decurrent, some 

 times mil strongly so, most often running far down as the 

 cap expands. Their width and spacing are used t" separate 

 the species into subdivisions, although this is nol always 

 Bharply marked. "Peck in his monograph of the Nen J "rk 

 species (Rep. 15, L892) states thai in bis opinion this grouping 

 is unsatisfactory, but ;is no better is offered, it is adhered t" in thi> 

 paper. CYSTIDIA are lacking in mosl species, and when present 

 are rather few and inconspicuous. The STEM is usually slender 

 in filiform, and when dry its cartilaginous cortex is like th.it 

 Mycena. The surface is glabrous, horn) and shining, or varying 

 tn pruinose or hairy a1 base. The SPORES are Bmooth. As In 

 Mvcena the immature spores are loosened in ;i microscopic mount; 

 bo the same precaution must be observed as when studying the »po 

 of Mycena in order thai one maj gel the correel measurements of the 

 mature Bpores. Verj tew Omphalias have n distinguishing (>IM)R, 

 and none of the following are nitrons ->r fragrant. Their EDIBIL 

 ITY is of no interesl because of their thin texture and small « 

 none are known to be poisonous, bul probabh fen have been te*»t< 



They are found from earl) spring to late autumn, during we1 

 weather and in low « >r damp, shaded places. With the exception 

 of 0. campanella and 0. fibula, thej occur >]■ illy, fen 



them are found in quantities, man) are bul rarelj found. \ i ther 

 large number of spe< ies are described, Peck h.i>- named aboul twei 

 five. 



