The Myxomycetes of the United States. 383 



MYXOMYCETES Wallr. 

 Myxogastres Fries, Sys. Myc, iii, 67. 

 Myxogasteres Endl., Gen., p. 25. 

 Mycetozoa DeBary and Rostaflnski. 



Division I. EXOSPORE.32. 



This division, as originally proposed, contains the genus Ceratium, but 

 latterly it has scarcely been insisted upon as a consistent ally of the 2d 

 Division. 



Division II. ENDOSPORE.#J. 



Sub- Division I. AMAUROSPOR.3E. 

 Spores violet, or brownish violet. 



Section A. ATBICH^E. 

 Sporangia without a capillitium. 



Order I. Protodermese. 



Family 1. PROTODEEMACEJ!. 



Genus 1. Protoderma R. 



1. Protoderma pusilla (Schr.). 



Licea pusilla Schrad., t. 6, fig. 4. Schw., Am. Bor., No. 2316. 

 Physarum licea Fries, Sys. Myc, iii, 143. 



Spores .017 mm . 

 On pine wood. Bethlehem (Schw.) ; Carolina (Curt.). 



Section B. TBICR0PH0RJ3. 

 SporaDgia constantly possessed of a capillitium. 



Order II. Calcarese. 

 Family 2. CIENKOWSKIACE M. 



Genus 2. Cienleowskia R. 



2. Cienkowskia reticulata (A. and S.). 



Physarum reticulatum Alb. and Schw., t. 7, f. 2. Schw., Amer. Bor., No. 



2295. 

 Diderma reticulatum Fries, Sys. Myc, iii, 112. 



Spores -OOg" 110 . 

 On dead leaves. Salem (Schw.) ; Car. (Curt.) ; Bethlehem (Schw.). 



