284 A Monograph of the Myxogastres. 



capillitium well developed, snow-white; spores pale brownish- 

 violet, epispore thick, warted, 10 12 /u, diameter. 



Physarum ajfine, Rost., Mon., p. 94; Sacc., Syll., vii., 1, 

 n. 1200. 



On rotten wood. Germany ; Poland. 



(Rostafinski's Synonyms.) 

 (?) Trichia nivea, Fl. Dan., t. 776, f. 4 (1782). 

 (?) Trichia rugosa, Trent., I.e., p. 288 (1797). 



Physarum glaucum, Phillips. P-Co ^rcsi 



Sporangia subglobose, and depressed or irregularly lobed, 

 more or less umbilicate below, grey, covered densely at first 

 with snow-white particles of lime; stem much shorter than 

 height of sporangium, blackish, thick, longitudinally wrinkled, 

 expanding into a common, firm, pale hypothallus; columella 

 absent; capillitium very dense, snow-white, nodes numerous, 

 large, Angularly stellate, connected by very short internodes; 

 spores bright violet, globose, rather coarsely warted, 12 14 /x 

 diameter. 



Physarum glaucum, Phillips, in Herb. 



Physarum lividum, Cke., Myxomycetes of the United States, 

 in Ann. Lye. Nat. Hist., of N. York, vol. xi., n. 12, p. 384. 



Didymium glaucum, Phillips, Grevillea, vol. v., p. 113, t. 88, 

 f. 6, a e; Sacc., Syll., vii., 1, n. 1315. 



(Type in Herb., Phillips, examined.) 



On dead branches. California. 



Scattered or gregarious, up to 1 mm. across, stem sometimes 

 obsolete. Certainly not synonymous with Physarum lividum 

 as supposed by Cooke, but much more nearly allied to Physarum 

 nephroideum, from which it is distinguished by the very dense 

 capillitium of numerous large nodes only separated from each 

 other by constrictions, hence every portion contains granules of 

 lime as in the genus Badhamia, 



Physarum cupripes, Berk, and Rav. 9-iUt\cov*uir\ 

 Sporangia* subglobose, umbilicate below, dark grey, often ivith 



