32 MYXOMYCETES. 



Physarum depressum, Schum. Saell., 1439 (1803). 



Physarum globosum, Schum. Saell., 1442 (1803). 



Physarum oxyacanthce, Schum, Saell., 1427 (1803.) 



Physarum cinereum, multis ? 



Physarum clavus, Link. Dis., i., 27 (1809). 



Physarum sinuosum, Link. Dis., i., 27 (1809). 



Physarum capitatum, Link. Dis., i., 27 (1809). 



Diderma muscicola, Link. Dis., i., 27 (1809). 



Didymium capitatum, Link. Dis., iii., 27 (1816). 



Didymium lobatum, Nees, f. 104 (1817) ; Cooke Hdbk., No 1129. 



Didymium physarioides, Klotsch. 



Strongylium minor, Fr. Gast., p. 9 (1817). 



Physarum melanopus, Fr. Gast., p. 23 (1817). 



Cionium lobatum, Spr. Sys. iv., 529 (1827). 



Didymium marginatum, Fr. S. M., iii., 116 (1829). 



Didymium melanopus, Fr. S. M., iii., 114 (1829) ; Berk. Ann. 

 N.H., No. 382 ; Cooke Hdbk., No. 1118. 



Didymium hemisphcericum, Fr. S. M., iii., 115 (1829). 



Physarum nig mm, Fr. S. M., iii., 146 (1829) ; B. & Br. Ann. 

 N. H., No. 1598 ; Grevillea, v., p. 12. 



Cio niuiT' farina ce urn, Link. Hbk., iii., 416 (1833). 



Didymium filamentosum, Wallr., 2187 (1833). 



31. Didymium microcarpon. (Fr.) 



Sporangia exactly globose, with numerous crystals covering 

 the walls, snow-white, as if covered with hoar frost ; umbilicate, 

 stipitate, with the very delicate stem impressed at the base ; 

 stem usually twice the length of the sporangium, delicately 

 striate, erect, either black and shining, or ferruginous- orange ; 

 columella distinct, globose, in some individuals forming a many- 

 celled chamber with pseudo-cells filled with crystals of lime ; 

 capillitium of bright-violet threads, rarely branched, combined into 

 a loose net; spores bright-violet, nearly smooth, '0058- '0065 mm. 

 diam. Etfki. Mon., p. 157. 



On rotten wood, dead leaves, &c. (Figs. 133, 177.) 



Lycoperdon stipitatum, Retz. Vet. Ac. Handl. (1769). 



Trichia hemisph erica, Trent., p. 228 (1797). 



Physarum nigripes, Lk. Diss., i., 27 (1809) ; Ditm., t. 42. 



Trichia alba', Purt. Mid. FL, iii., 1113 (1817). 



Cionium xanthopus, Ditm., t. 43 (1817). 



Cionium iridis, Ditm., t. 7 (1817); Nees, f. 106. 



Physarum microcarpon, Fr. Gast., p. 23 (1818). 



Didymium loba'um /3 stipitatum, Somm. Fl. Lapp, 210 (1825). 



Didymium nigripes, Fr. S. M., iii., 119 (1829 J; Eng. FL, v., 

 313; Cooke Hdbk., No. 1124. 



Didymium xanthopus, Fr. S. M., iii., 120 (1829) ; Berk. Ann. 

 N. H., No. Ill ; Cooke Hdbk., No. 1126. 



