16 



Mycetozoa of North America 



branches; lime-knots taking the form of vertical 

 plates. 

 Sporangia in the shape of a covered goblet, obovoid ; 



stalks cartilaginous. 

 Sporangia obovoid, shining, clustered; stalks mem- 

 branous. 

 Capillitium without lime-knots. 

 Sporangial wall opaque, smooth. 

 Sporangial wall hyaline, without lime. 



6. ClENKOWSKIA 



7. Craterium 



8. Leocarpus 



9. 



10. 



Diderma 



DiACHEA 



Genus 2. BADHAMIA Berkeley, Trans. Linn. Soc. 21: 

 153. 1853. 



Sporangia stalked, sessile, or forming plasmodiocarps; sporan- 

 gial wall single, with included lime-granules; capillitium consisting 

 of a coarse network charged with granules of lime, sometimes 

 constricted here and there into narrow, hyaline threads; spores 

 clustered or free. 



Type species: Badhamia hyalina (Pers.) Berk. 



Spores clustered. 



Spores warted chiefly on one side. 

 Sporangia 1 to 1.5 mm. diam. 



Lime in sporangia and capillitium white. 



Plasmodium yellow; sporangia gray, clus- 

 tered or scattered, sessile or with mem- 

 branous stalks. 

 Sporangia gray with dark, firm stalks. 

 Plasmodium white; sporangia white, 

 heaped. 

 Lime in sporangia and capillitium yellow. 

 Sporangia 0.3 to 0.6 mm. diam.; capillitium white 

 or faintly tinted. 

 Spores equally warted all over. 

 Spores not clustered. 



Sporangia yellow, usually accompanied by plasmodio- 

 carps. 

 Sporangia white or gray. 



Sporangia globose, sessile or on short membranous 

 stalks; spores violet-brown, occasionally looscK' 

 clustered. 

 Sporangia globose, usually clustered on long, 



membranous stalks. 

 Sporangia subglobose, sessile or with firm, yellow 

 or brown stalks; spores dark purplish brown, 

 spinulose. 

 Sporangia small, flattened or concave beneath, on 

 short, membranous stalks; spores dark i)uri)lish 

 brown. 



5. B. foliicola 



6. B. magna 



10. B. macrocarpa 



11. B. grtuilis 



