10 Mycetozoa of North America 



Suborder II. AMAUROCHAETINEAE. Sporangia without 

 lime. 



Family I. COLLODERMATACEAE. Sporangia distinct, ses- 

 sile, with outer gelatinous walls. 



Genus 15. Colloderma G. Lister 



Family II. STEMONITIDACEAE. Sporangia distinct, pro- 

 vided usually with stalks and columellae. 



Genus 16. Stemonitis Gled. 



17. Comatricha Preuss. 



18. Enerthenema Bowm. 



19. Lamproderma Rost. 



20. Clastoderma Blytt 



21. Echinostelium de Bary 



22. Macbrideola Gilb. 



Family III. ELAEOMYXACEAE. Sporangia distinct, pro- 

 vided with a waxy or oily substance. 



Genus 23. Elaeomyxa Hagelstein 



Family IV. AMAUROCHAETACEAE. Sporangia combined 

 to form an aethalium; without wax. 



Genus 24. Amaurochaete Rost. 

 25. Brefeldia Rost. 



Order II. CRIBRARIALES. Spores variously colored, not 

 violet-brown or purplish gray (except in Licea minima). 



Suborder I. DICTYDIINEAE. Capillitium wanting, or if 

 I)resent not forming a system of uniform threads (except in 

 Alwisia). 



Family I. CRIBRARIACEAE. Sporangial wall membran- 

 ous, beset with microscopic round, plasmodic granules, and 

 (except in Lindbladia) forming a net in the upper part. 



Genus 26. Lindbladia Fries 



27. Cribraria Pers. 



28. Dictydium .Schrad. 



