1228 Wisconsin Academy of Sciences, Arts and Letters. 
forming a Badhamia- like network with few hyaline threads. 
Spores bright violet-brown, almost smooth or spinulose, 7-10/* 
diam. *’ 
The species described by Massee under the name P. scrobicula- 
turn Massee, and for which he gives the synonym P. cinereum, 
differs so materially from the above, that it is quite evidently a 
different species. 
I find the sporangia globose, elongate, plasmodiocarpous, scat¬ 
tered, and crowded, and I have one pulvinate set of sporangia ; 
when they are ripe they are gray; the capillitium nodes are large, 
irregular. Spores are 8-9/* in diameter in my specimens. 
One collection is on fresh green leaves of several kinds; there 
are many immature sporangia among them; this was collected near 
Madison, July 7, 1904; a small group packed solidly together is 
on some little branched stems, found at Blue Mounds, July 8, 
1905; and another was collected in Madison July 1, 1913. 
Physanm auriscalpium Cooke. 
1877. Physarum auriscalpium Cooke, Myx. U. S., p. 384. 
Macbride: “Sporangia gregarious, stipitate, small, bright yel¬ 
low, depressed globose, rough : stipe reddish-brown or fuliginous, 
even, slender: hvpothallus scant, black, or none; columella none; 
threads of the capillitium yellow, delicate, connecting the rather 
dense and abundant lime granules; spore-mass brownish 
black, spores violaceous, minutely but distinctly spinulose, 
9-11/t”. He says that this species is easily recognizable by its 
brilliant yellow color, somewhat rugose, sometimes scaly, peri- 
dium, its richly calcareous capillitium, also bright yellow where 
not weathered or faded, its dark brown translucent non-calcare- 
ous stem. Spores 9-10/*. 
'Lister’s description agrees very closely with MacBride’s, but 
he says the sporangia are scattered or in small clusters. 
Massee, under the name P. ornatum , describes this form very 
nearly as given above, but he does not give the synonym P. auris¬ 
calpium. He makes out the spores to be from 10-11^ in dia¬ 
meter. 
T have but one collection of this attractive species with its vivid 
yellow sporangia and reddish stipe. The capillitium nodes are 
