SYNOPSIS OF MYCETOZOA 187 



Stalk olive-brown or orange, translucent, not granular 



D. nigripes Fr. 



Stalk and columella white ; crystals on sporangium-wall 

 scattered or forming a wrinkled crust ; sporangia often 

 effused D. effusum Link 



Stalk short membranous, pale buff; crystals on sporangium- 

 wall forming a smooth, thick, deciduous envelope 



D. crustaceum Fr. 



Stalk and columella orange or orange-brown ; sporangium- 

 wall cartilaginous, areolated, orange or orange-brown 



D. leoninum Berk. & Br.f 



C. Sporangia with orange stalks ; sporangium-wall hyaline ; spores 



dark brown, closely reticulated (nearly allied to D. effusum) 



D. intermedium Schroet. (5, p. 209). 



14. Spumaria Persoon. Sporangia confluent, forming an setha- 



lium, enclosed in a mass of white lime-crystals; the other 

 characters as in Didymium. 



Sporangia elongate and lobed ; spores strongly spinulose 



S. alba DC. 



Spores closely reticulate 



S. alba var. dictyospora R. Fr. (3, p. 66). 



15. Lepidoderma De Bary. Sporangium-wail cartilaginous, beset 



with superficial crystalline discs or scales; capillitium usually 

 rigid, without lime (^except in L. Carestianum vax. granuliferum 

 List.,q. v.). 



Sporangia with orange stalks ..... L. tigrinum Host. 



Sporangia subglobose or hemispherical, sessile, rarely with short 

 grey-brown stalks, or forming plasmodiocarps 



L. Carestianum Bost. 

 (including L. Chailletii Bost. (25, p. 63) ). . 



Plasmodiocarps ; capillitium containing lime in the form of 

 rounded nodules 



L. Carestianum var. granuliferum List. (25, p. 63). 



(syn. Didymium granuliferum Phill. ; 

 Lepidoderma granuliferum B. Fr. (4, p. 3) ). 



Subcohort II. AmAUROCHjETINE^. 



Order I. — Stemonitace^. 



16. Stemonitis Gleditsch. Sporangia cylindrical stipitate, fasci- 



culate ; stalk continued as a columella to near the apex of 

 the sporangium ; capillitium radiating from all parts of the 

 columella, the ultimate branches normally uniting to form an 

 even superficial net. 



t Further extensive gatherings made by Mr. Petch in Ceylon confirm the 

 integrity of Berkeley & Broome's species, and show it to be distinct from Lepi- 

 doderma tiijrinum, 



p 2 



