324 



Mycologia 



small forms of Badhamia macro car'pa, and might be mistaken at 

 first sight for B. orbiculata; but the character of the capillitium is 

 distinctly that of Physarum. From P. compressum and P. con* 

 natum, its nearest allies, it may be distinguished by the shape and 

 habit of the sporangia and their small size, as well as by the 

 larger spores with the wall of uneven thickness. 



Physarum lilacinum Sturgis & Bilgram sp. nov. Plasmodium ? 

 Sporangia gregarious, stalked, globose, erect, pale-lilac to pale- 

 Indian-red 1 in color, 0.5 mm. in diameter ; sporangium-wall mem- 

 branous, beset with rounded masses of lilac or reddish lime. 

 Stalk erect, broad-based, tapering upward, calcareous, furrowed, 

 paler than the sporangium or concolorous, 0.7-0.9 mm. long, 

 about 0.1 mm. thick. Columella conical or columnar. Capil- 

 litium delicate, rigid, persistent ; lime-knots small, rounded, com- 

 posed of large, pale lilac, or reddish, spherical granules. Spores 

 pale-brown, almost smooth, 8-9 /a in diameter. 



Habitat: On dead wood and moss. Fairmount Park, Phila- 

 delphia, Pa. (H. Bilgram). 



This peculiar form occurred in considerable abundance in 

 September, 1910, and again two years later at a distance of 

 twenty miles from the original locality. Like P. citrinum, P. 

 murinum and others of this group, it resembles P. globuliferum 

 very closely, except in color. Whether this affords sufficient 

 grounds of distinction may be questionable, but since it is at 

 present accepted as such, it seems advisable to publish the above 

 as a distinct species rather than as a colored variety of P. globuli- 

 ferum. From P. pulcherrimum it differs not only in color, but 

 in the shape of the columella and in the color of the spores. 



Physarum javanicum Racib. This species occurs in a large 

 collection of Myxomycetes made in Florida by Professor Roland 

 Thaxter in the autumn of 1897. The scattered, stalked, white 

 sporangia, obconic in shape, deeply umbilicate above; the subu- 

 late, spirally-twisted, sulcate stalks encrusted with whitish lime ; 

 the capillitium of large, angular or rounded, white lime-knots, 

 with stiff, rod-like attachments to the wall, seemed to be char- 

 acters applicable only to this species. Specimens were submitted 

 to Miss Lister, who confirmed the diagnosis. This is the first 

 record of the occurrence of P. javanicum outside of Java. 



1 The colors are those designated as " purple madder " and " Indian red " 

 of Winsor and Newton's " Specimen Tints." 



