HYMKXOJIYCETES. 



Genus 3^. THELEPHORA, Ehrh. 56 Species. Fries Ep. 



H3'iiienium sub-inferior, with costate, ramose, or papillose 

 strife, concrete with the woven, floccose, or fibrous hymeno- 

 phore, which is destitute of a proper cuticle. 



Genus So, STEREUM, Fries. 50 Species. Fries Ep. 



Hymenium inferior, smooth, or spuriously nodulose, concrete 

 with the coriaceous or woody, persistent, hymenophore ; re- 

 flexed disc, when present, zoned, with a crust-like or fibrous 

 cuticle. 



Genus 36. AURICULARIA, Fries. 4 Species. Fries Ep. 



Hymenium remotely and irregularly costatoplicate, when 

 moist sub-gelatinous, tumid ; hymenophore coriaceous, per- 

 sistent, but shrinking very much when dry. 



'■■■Genus 37. CORTICIUM, Fries. 51 Species. Fries Ep. 



Hymenium amphigenous, of a soft fleshy or waxy consistence, 

 undulated or papillose ; when dry shrinking and becoming 

 hard, smooth, often rimose ; lij'menophore resupinate, floccose, 

 frequently disappearing except at the margin, leaving only 

 the fertile stratum on the matrix. 



Genus 38. CYPHELLA, Fries. 15 Species. Fries Ep. 



Hymenium forming the concave surface of the cup-shaped, 

 nu-mbrajiaceous pileus. 



Synopsis of THELEPHORA. 



I. MESOPUS. 



Stem simple, central. 



II. PLEUROPUS. 



Stcfd simple, lateral. 



III. MEJflSMA. 



Substipitate, broken up into irregidar branches, or imbiicato- 

 cajspitose ; base not cfi'iised. 



IV. APUS. 



Sessile; base spreading; margin free, efliguratc, iaciniate or 

 lobate. 



V. liESUPINA Tim 



Resujiinate ; margin byssoid or fibrillnse. 



* The spcfies of .Sterciiin and ('(irlicemn ;ire very ri('(|uoiilly I'lmii.l in an ,'il)- 

 nornial, sterile, membranaceous luiulitioii, especially when yrowiii),' on llie li;iik ol 

 trees. 



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