Agaricaceee 



HIA'TULA Fr. 



Hio, to gape. 



Hiatula. 



(Plate XXXIII.) 



HIATULA WYNNI/E. 



time placed by Fries. Massee. 



Pileus symmetrical, very thin, 

 without a distinct pellicle, formed by 

 the union of the backs of the gills, 

 splitting when expanded. Gills 

 almost or quite free, white. Stem 

 central. Spores white. 



Allied to Lepiota in the thin pi- 

 leus and free gills, but differing in 

 the entire absence of a ring. ' Not 

 at all deliquescent as in the genus 

 Coprinus, near to which it was at one 

 Reported from North Carolina. 



(Plate XXXIV.) 



OMPHA'LIA Fr. 



Gr. belonging to an umbilicus. 



Omphaiia. Pileus generally thin, usually umbilicate at first, then funnel-shaped, 



often hygrophanous, margin incurved 

 or straight. Gills truly decurrent 

 from the first, sometimes branched. . 

 Stem distinctly cartilaginous, pol- 

 ished, tubular, often stuffed when 

 young. Flesh continuous with that of 

 the pileus but differing in character. 

 Spores white, somewhat elliptical, 

 smooth. 



Generally on wood, preferring 

 hilly woods and a damp climate. 



Resembling Collybia and Mycena 

 in the flesh of stem and pileus being 

 different in texture and in the exter- 

 nally cartilaginous stem. It is per- 



OMPHALIA UMBELLIFERA. 

 Enlarged about two sizes. 



fectly separated by the gills being markedly decurrent from the first. 



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