386 The Myxomycetes of the United States. 



14. Physarum conglomeratum (Fr.). 

 Diderma conglomeratum Fr., S. M., iii, 111. 



Diderma granulatum Fr., S. M., iii, 210. 

 On wood, leaves, etc. California (Harkness). 



15. Physarum polymorphum (Mont.). 

 Didymium polymorphum Mont., Cub., p. 314. 

 Didymium polycephalum Ilav., Grevillea. 



Didymium luteo-grisexim B. and C, Grevillea, iii, p. 65. 

 Didymium connatum Peck, N. Y. Eeports. 



Spores -0088— -01 mm . 

 On dead leaves. Car. (Curt., Rav.) ; N. Jersey QBerk.) ; New York (Peck). 

 16. Physarum contextum Pers., Syn., 168. Schw., Am. Bor., No. 2290. 

 Diderma contexttim Pers., Obs., i, 89. Ditm., t. 31. 

 Leocarpus contextus Fries, S. V. S., 450. 

 Diderma flavidum Peck, N. Y. Eeports. 



Spores -011— -013 mm . 

 On dead stems of plants. Car. (Schw., Curt.) ; Bethlehem (Schw.). 

 17. Physarum gyrosum R. 

 BeticuMria mttscorum Fr., Sys. Myc, iii, 91. 



uEthaleum muscorum A. and S., t. vii, f. 1. Schw., Am. Bor., 2371. 

 Spores -0083— •011 mm . 

 On mosses. Car. (Schw., Curt.); Boston (Farlow). 

 18. Physarum sinuosum (Bull.). 

 Angiorideum simiosum Grev., t. 310. 

 Diderma valvatum Fr., Sys. Myc, iii, 109. 

 Diderma pallidum B. and C, in Grevillea. 

 Angioridetim valvatum Fr., Sys. Myc. 

 Physarum bivalve Schw., Am. Bor., 2293. 



Spores -0083— -009 mm . 

 On pine leaves, stems, etc. Car. (Curt.) ; Salem (Schw.) ; Boston 

 (Farlow) ; N. Eng. (Frost) ; N. York (Peck). 



19. Physarum Petersii B. and Curt., in Grevillea, N. A. Fungi, No. 356. 



Flocci yellowish, spores black. 



On dead wood. Ala. (Peters). 

 Var. A. Farlowi R. 

 Physarum Farlowi Rost., MSS. 



Boston and Pennsylvania. 

 Var. B. intermedium Rost. 



Alabama. 

 Var. C. genuinum Rost. 



Alabama. 



