The Myxomycetes of the United States. 393 



SUB-GEN. B. DlDERMA. 



59. Chondrioderma difforme (Pers.). 

 Diderma difforme Pers., Disp., p. 9. 

 Didymium difforme Schw., Am. Bor., 2272. 

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

 Physarum caesium Fr., Sys. Myc, iii, 147. 

 Physarum album Fr., Sys. Myc, iii, 147. Curt., Cat., pp. 112. 

 Spores -01— -O^S"". 

 On herbaceous stems, leaves, e-tc. Car. (Schw., Curt.) ; Conn. (Wright). 

 60. Chondrioderma testaceum (Schr.). 

 Didymium testaceum Schr., t. V, f. 1, 2. Schw., Am. Bor., No. 2273. 

 Diderma testaceum Pers., Syn , 167. 

 Diderma Marias Wilsoni Clintou, in N. Y. Reports. 

 Spores -0092— -01 mm . 

 On dead stems of plants, leaves, etc. Car. (Schw., Curt.) ; N. Jersey 

 (Ellis); California (Harkuess). 



Gl. Chondrioderma globosum (Pers.). 

 Diderma globosum Pers., Disp., t. i, f. 4, 5. 

 Didymium globosum Schw., Am. Bor., No. 2274. 



Spores -0083 mm . 

 On leaves. Car. (Schw., Curt.); Bethlehem (Schw.); Boston (Far- 

 low) ; N. Eng. (Frost). 



62. Chondrioderma bruxneolum (Ph.). 

 Diderma brunneolum Phillips, in Grevillea, V, p. 114, t. 87, f. 4. 

 On oak bark. San Francisco (Harkness). 



This seems, from the nature of the capillitium and some 

 other points, to be hardly a good Chondrioderma. 



sub-gen C. Leangium. 

 63. Chondrioderma radiatum (Linn.) 

 Lycoperdon radiatum Linn., Sp. PI., 1654. 

 Didymium stellare Schrad., t. 5, f. 3, 4. 



Diderma stellare Pers., Syn., 164. B. and Curt, in Grevillea. 

 Diderma umbilicatum Pers., Syn., 165. 



Spores -009— •012 mm . 

 On pine wood. Car. (Curt.). 



64. Chondrioderma gasterodes (Phil.). 

 Diderma gasterodes Phillips, in Grevillea, V, t. 87, fig. 1. 

 Spores violet-black, smooth, '015 mm . 

 On bark and moss. California (Harkness). 



