62 ENDOSPORE.E. [PHYSARUM. 



Hab. On dead wood and leaves. Birmingham (L:B.M.39) ; Ger- 

 many (Strassb. Herb.) ; Norway (Christiania Herb.) ; Philadelphia 

 (L:B.M.39). S. Carolina (B. M. 863, 991) ; California (L:B.M.39). 



SPECIES NOT MET WITH IN THE QUOTED COLLECTIONS. 



31. P. flavum Fries, Symb. Gast., p. 22. Sporangia globose, 

 rugoso-verrucose, yellow. Stalk short, equal, of the length of 

 the sporangium, much wrinkled, pale yellow. Columella none. 

 Capillitium abundant, with large, angular, whitish or pale yellowish 

 lime-knots. Spores dull violet, minutely warted, 9 '9 to 10 -8 ^ 

 diam. Host., Mon., p. 100. Craterium ftavum Fr., Summ. Veg., 

 p. 454. 



Hab. On twigs of bramble, ferns, etc. Sweden. 

 This description applies to Craterium citrincllum List. 



32. P, sulphureum Alb. & Schw., Consp. Fung., p. 93, tab. 6, 

 fig. 1. Sporangia globose, erect, rugoso-squarnulose, sulphur- 

 yellow. Stalk smooth, short, conical, white, densely charged with 

 lime within. Columella none. Capillitium well developed, pale 

 violet-yellow ; lime-knots abundant, angular. Spores bright 

 violet, smooth, 10 to 12 /x diam. Host., Mon., p. 101. 



Hab. On dead leaves. Germany and Russia. 



33. P. effusum Schwein., in Trans. Amer. Phil. Soc., iv. (1834), 

 p. 257. Sporangia creeping, forming a reticulation, or entirely 

 effused, white, much flattened ; mass of spores and Capillitium 

 becoming black. 



Hab. On earth in a hothouse. Salem, N. America. 



34. P. elegans Schwein., I.e. Sporangia crowded, subgloboso, 

 convex, flattened above, amethyst colour, subrugose. Spores 

 blackish -brown, conglomerated. Capillitium of thickish threads. 



Hab. Rare. Salem, N. America. 



35. P. luteovalve Schwein., I.e. Sporangia irregularly lobed, 

 convex, more or less confluent, externally of a bright gold colour, 

 somewhat compressed, bivalved. Spores bright yellow. 



Hab. On fallen stems. Carolina. 



This might refer to some species of Perichcena. 



36. P. polysedron Schwein., I.e. Sporangia gregarious or some- 

 what scattered, rather large, blackish-fuliginous, dull, subhemi- 

 spherical, exactly pentagonal with straight sides, rugose, at length 

 breaking in a somewhat stellate manner from the persistent lower 

 part. Spores and dense capillitium of the same colour as the 

 sporangia. 



Hab. On logs of walnut. Bethlehem, N. America. 



37. P. cgespitosum Schwein., I.e., p. 258. Sporangia substipit ate 

 or suddenly contracted at the base, clustered or scattered, tur- 



