62 THE MYXOMYCETES 



lindrical, 0.1 mm. thick, almost reaching the top of the sporangium 

 and remaining after the breaking away of the sporangium wall; 

 capillitium delicate, the threads almost colorless, with enlarged ends, 

 the nodes white, few, of various forms and sizes, filled with small round 

 crystals 1 /jl in diameter; spores spherical, violet-brown, thickly covered 

 with flat warts, 6-8 jit. 



Distinguished by the color, the stalk, the columella, the delicate 

 capillitium and the size of the spores. 



Known only from southern Manchuria, on living leaves. 



30. Physarum crateriforme Petch 



Ann. R. Gard. Perad. 4 : 304. 1909. 



Sporangia gregarious or solitary, grayish white or pale brown, 

 globose, clavate or crateriform, 0.4-0.6 mm. in diameter, stipitate or 

 sometimes sessile, 1-2 mm. in total height; stalk when present opaque, 

 conical, black, or black below and white above; columella cylindrical, 

 often reaching the apex of the sporangium, or shorter, then clavate 

 or conical, concolorous with the stipe or paler, occasionally lacking; 

 capillitium various, strongly calcareous, the nodules either massed 

 about the columella, or, in the globose sporangia, rod-like and ascend- 

 ing; spores closely spinulose, 10-13 /x. 



Iowa, Antigua; western Europe, West Africa, Ceylon, Japan. 



31. Physarum listeri Macbr. nom. nov. 



PL V, Figs. 74, 75. 

 1904. Physarum luteo-album List., Jour. Bot. 42 : 130, non Schum. 



Sporangia gregarious, subglobose, large, about 1 mm. in diameter, 

 yellow, shading into white, orange or olivaceous, smooth or rugulose, 

 stipitate; stipe stout, smooth, 0.5-1 mm. high, yellow or orange above, 

 white below, cylindric, lime-stuffed; columella large, subglobose or 

 clavate, yellow; capillitium either of very slender pale yellow threads, 

 branching at acute angles and anastomosing, or of broad, yellow, sim- 

 ple or forked strands, persistent after spore dispersal; nodules few, 

 small, linear or fusiform; spores purple-brown, coarsely and somewhat 

 irregularly spinulose, 10-13 /jl. Plasmodium orange. 



The general plan of structure corresponds very well with Fries' 

 idea of his genus Tilmadoche, although the present species would 

 seem, by very grossness, strangely out of place with the tilmadoches. 

 But the singular didermoid, evenly branching threads of the capil- 

 litium bearing their slender spindle-shaped burdens of lime are very 



