146 Cincinnati Society of Natural History. 



there is no thick smooth ring encircling the perforation as in the 

 preceding species. 



b. Veil not reticulate, concealed beneath the pileus. 



3. P. Ravenelii, B. & C. Volva sub-globose or ovoid, pinkish ; 

 -with an inner membrane, the lower half of the veil, surrounding 

 the base of the stipe ; segments 2 or 3. Stipe cylindric, tapering 

 at each end. cellulose; the veil membranous, scarcely half as long 

 as the pileus and concealed beneath it. Pileus conic-campanulate ; 

 the surface not reticulate-pitted after deliquescence; the apex 

 •smooth and closed or finally perforate. Spores elliptic-oblong, 

 4X5-2 mic. 



Growing in woods and fields about rotting stumps and logs. 

 New York, feck: S. Carolina, Ravenel ; Ohio, Alorgan. Plant, 

 5-7 inches high, volva, I'S-s inches in diameter; stipe nearly i 

 in :h thick; pileus i )^ inches in height. The npex is umbilicate or 

 finally perforate and encircled by a smooth ring. By the elonga- 

 tion of the stipe the thin membrane separating the stipe from the 

 p.leus is rent midway by an annular fissure, the upper half becom- 

 ing loosened forms the short veil under the pileus, the lower half 

 rem lining within the volva about the base of tlie stipe. It is 

 probible that in some instances the hidden veil has not been 

 detected and plants of this species have been refened to the fol- 

 lowing one. This species vitiates the genus Dictyophora and it 

 can not very well be placed in Ithyphallus. 



II. ITHYPH.ALLUS. Stipe without an indusium or veil 

 dejiendent from its apex. 



4. P. iMPUDicus, Linn. Volva globose or ovoid, while or 

 pinkish ; segments 2 or 3. Stipe cylindric, tapering at each end, 

 •rellulose, without a vt-il. Pileus conic-campanulate ; the surface 

 rjticulate-pitted after deliquescence; the apex smooth, at first 

 closed, at length perforate. Spores elliptic oblong, 4-5X2 mic. 



Growitig on the ground in woods. New England, Frost, Farlow 

 New York, Peck, Gerard; Carolina, Sclnaeinitz; Ohio, D. L James; 

 Nebraska. H. J. Webber ; California, Harkness. Plant 6-8 inches 

 high, volva 2 inches in diameter, stipe x]/^ inches thick, pileus 2 

 inches in height. By the elongation of the stipe the thin membrane 

 which separates the stipe from the pileus is torn into shreds and 

 the pileus is thus liberated from the stipe except at the apex. 



5. P. RUBicuNDUS, Bosa Volva small, gray. Stipe fusiform, 



