240 



Mvculogical Bulletin Nus. r,Q and 60 



[Vol. IV 



The first, including the Hclvella and the I'crpa, is characterized especially 

 b_v the pileus or cap being free from the sides of the stem. 1 he second 

 group, including the MorchcUa and Gyroniitra, has the pileus entirely 

 attached to the stem. These genera need not be confused, since the 

 Hck'clla has a drooping pileus, irregularly lobed or waved, while the Vcr^a 

 has the drooping pileus but comparatively smooth and with an entire 

 margin. The MorchcUa, on the other hand, has the pileus attached to the 

 stem and covered with deep irregular pits, while the Gyroniitra, also 

 attached, is composed of rounded, variously contorted folds. 



Explanation of figures: — The accompanying half-tor.e is a life size 

 reproduction from a photograph of five of the specimens. The one in the 

 upper right hand corner is old with a split and ragged pileus; the one just 

 be'ow it is a vertical section, showirg the pithy contents of the stem. TJie 

 two circles in the middle below are cross-sections of the stem. The outline 

 sketches, Fig. 18S, represent asci and paraphyses ; one ascus is broken open 

 to discharge the spores. '1 he oaraphyses or slender cells accompanying the 

 asci have septa, cr cross-walls, which is not a common characteristic. 

 The plants in the half-tone are represented natural size; the outline figures 

 of asci, paraphyses and spores are highly magnified. 



l-ig. IS!(. Stro-bilom'-y-ces sirovi-i a'-ci;-u.s. A imishroom btlui-piiii; to tlij fain! y 

 I!o-i.f.ta'-ce-af. — having I'.ircs on the under side of the cam somewhat siniilar to a 

 I'olvt^orcs. The peculiar wartlike tufts t>ive it a stran(.'e asiiect and sren in 

 the field or open woods it would never be mistaken. This half-tone from a 

 photograph taken in the winter by Mr. A. I'". Lane, Milwaukee, Wisconsin, illus- 

 trates the apiiearai'.ce ( f a ])reserv<.d dry specimen. 



The Mycoloeical Bulletin is issued Monthly, Price 25c. Copies of Vol. II (1904) and Vol 

 III M9J5i may be had for 50 cents each, or cloth bound copies for 75 cents. No. copies 

 re.-nain of Vol. I < 1902 ). Address W. A. Kellerman, Columbus, Ohio 



