BRITISH MYCETOZOA. 15 



Order II. — Didymiace/E. Lime in superficial crystals deposited 

 outside the sporangium-wall. 



Genus 10. Crystals stellate; sporangia single. 



Didymium (p. 24). 

 Genus 11. Crystals stellate ; sporangia forming an sethalium. 



Spumaria (p. 26). 

 Genus 12. Crystals lenticular. Lepidodcrma (p. 26). 



Sub-cohort W.—AMAUROCHMTINEJE. Sporangia without 

 lime. 



Order I. — Stemonitace^e. Sporangia single, provided with a 

 stalk and columella. 



A. Sporangium-wall evanescent. 



Genus 13. Capillitium spreading from the columella and form- 

 ing a superficial net. Stcmonitis (p. 26). 



Genus 14. Capillitium as above, but not forming a superficial 

 ne t Comatricha (p. 27). 



Genus 15. Capillitium springing from the apex of the sporan- 

 gium. Enerthenema (p. 28). 



B. Sporangium-wall persistent. 



Genus 16. Capillitium radiating from the columella. 



Lamproderma (p. 28). 



Order II. — AmaurochvETACEjE. Sporangia combined into an 

 sethalium. 



Genus 17. Capillitium irregularly branched. 



Amaurochcete (p. 30). 



Genus 18. Capillitium with chambered vesicles. 



Brcfeldia (p. 30). 



Cohort U.—LAMPROSPORALES. Spores variously coloured, 

 not violet (except in Cribraria violacea). 



Sub-cohort I. — ANEMINEAt. Capillitium wanting, or not 

 forming a system of uniform threads. 



Order I. — Heterodermaceje. Sporangium-wall membranous, 

 beset with microscopic round plasmodic granules. 



Genus 19. Sporangium-wall not forming a persistent net. 



Lindbladia (p. 30). 

 Genus 20. Sporangium-wall forming a persistent net. 



Cribraria (p. 31). 

 Genus 21. Sporangium-wall forming numerous parallel ribs. 



Dktydium (p. 32). 



Order II. — Liceace^e. Sporangium-wall cartilaginous. 

 Genus 22. Sporangia solitary, sessile. Licea (p. 32). 



