36 
Mycologia 
In correspondence with Prof. A. P. Morgan in 1906 relative to 
some species of Marasmius, Mr. Morgan said concerning this 
plant, “ I think it is something new, near M. atro-rnbens Berk.” 
The description was then written and submitted to Mr. Morgan 
for publication in the Journal of Mycology. For various reasons, 
it was not published at that time but the plant may be found bv 
other collectors, and the description is therefore published. 
The type specimens are in the Carnegie Museum, Pittsburgh, Pa. 
Peabody High School, 
Pittsburgh, Pa. 
Explanation of Plate CXV 
Figs. 1-3. Hormisciopsis gelatinosa Sumstine. Figs. 1-2 show mycelium, 
sporophores and spores highly magnified. Fig. 3 shows a group of plants 
nearly natural size. 
Figs. 4-5. Arthrosporium album Sumstine. Fig. 4 shows stroma and 
spores highly magnified. Fig. 5, a group of plants nearly natural size. 
Figs. 6—8. Phyllosticta Atriplicis Desm. Figs. 6 and 7 show leaves of 
Atriplex hastata with discolored spots containing pycnidia. Fig. 8 shows 
pycnidia and spores highly magnified. 
Explanation of Plate CXVI 
Fig. 1. Oidium album Sumstine; mycelium, sporophores and spores. 
Fig. 2. Polyscytalum flavum Sumstine. 
Figs. 3-5. Streptothrix pereffusa Sumstine ; sporophores and sporei 
Fig. 6. Streptothrix atra B. & C. 
The figures were drawn with the aid of the camera lucida and are highly 
magnified. 
