302 A Moiio<iraplt of tJie Myxogastres. 



Spumaria gmnidaria, Schum., Fl. Saell., n. 1419; Fl. Dan., 



t. 1979, f. 2 (1803). 

 S^yuMaria muiuta, Schum., Fl. Saell., n. 1419; Fl. Dan., 



t. 1979, f. 1 (1803). 

 Diderma vitellinum, Link, Herb. 

 Didymiu7n glomeirdum, Fr., Herb. 

 Didymium contexhim, /3. glomerulosum, Fr., Sym. Gast., p. 20 



(1818). 

 Diderma conglomcratum, Fr., I.e., iii., p. Ill (1829). 

 Diderma granidatum, Fr., I.e., iii., p. 110 (1821). 

 Diderma minutum, Fr., I.e., iii., p. Ill (1829). 

 Diderma ritgulomm, Wein., I.e., p. 594 (1836). 

 Diderma flavum, Fr., in Wein., I.e., p. 593 (1836). 

 Leocarpus minutus, Fr., Sm. Veg. Scan., p. 540 (1849). 

 Leocar^ms granulatus, Fr., Sm. Veg. Scan., p. 541 (1849). 

 Garcerina conglomerata, Fr., Sm. Veg. Scan., p, 451 (1849). 



Physarum rubiginosum, Kost. 



Sporangia gregarious, usually nearly globose, attached by a 

 broad or narrow base, wall douUe, outer layer brittle, breaking 

 atoay in fiakes, from dirty orange to clear vermilion, inner wall 

 very thin, grey; columella absent; capillitium copious, nodes 

 and interstitial swollen portions numerous, variable in size, 

 containing yellow or reddish granules of lime ; spores dingy 

 violet, 10 — 13 II diameter, with a slight indication of being 

 vermculose. 



Physarum rubiginosum, Rost,, M(m., p. 1 04 ; Sacc, Syll., vii., 

 1, n. 1180. 



On moss, &c. Sweden ; Finland ; United States. 



Sessile, globose, 1 — 1*5 mm. diameter; distinguished by the 

 bright colour of the outer layer of the sporangial wall, the very 

 thin, grey, inner layer, absence of columella and spores which 

 vary from being perfectly smooth to very minutely verrueulose. 

 The granules of lime present on the outer wall of the spor- 

 angium, when examined under the microscope, are seen to be 

 mostly minute and yellow, amongst which are a few scattered, 

 larger ruby-red lumps. 



