2 4 



BRITISH MYCETOZOA. 



[Chondrioderma. 



io. C. floriforme Rost. — Sporangia globose, white or cinnamon ; 

 sporangium-wall dehiscing on drying in revolute lobes. Stalks 

 longer than in the last species. Columella ovoid. Capillitium of 

 slender violet-brown threads with bead-like thickenings. Spores 

 red-violet-brown, with widely scattered obtuse warts, 9 to 1 1 /x diam. 



Hab. On oak stumps, etc. 



11. C. lucidum Cooke. — Sporangia subglobose, brown, shining; 

 sporangium-wall of two layers, but without deposits of lime. 

 Columella prominent, roundish, stalked. Capillitium of few, broad, 

 branching, purplish-brown threads ; spores dark purple-brown, 

 closely spinulose, 12 to 14 /a diam. 



Hab. On moss. Trefriw, N. Wales. A doubtful species. 



Fig. 17. 

 DiacHjEA elegans Fries. 



Two sporangia, the one entire, 

 the other deprived of the 

 spores and showing capil- 

 litium and columella. Mag- 

 nified 22 times. 



Genus 9. DLA.CH.rEA Fries.— Lime 

 not present either in the membranous 

 sporangium-wall or in the network ot 

 purple capillitium, but in the stalk and 

 columella only. 



1. D. elegans Fries. — Sporangia 

 cylindrical, iridescent purple ; stalk white. 

 Columella narrowing upwards, white, 

 giving rise to the closely branching 

 capillitium. Spores dull violet, nearly 

 smooth, 7 to 9 fx, diam. 



Hab. On dead leaves. 



ORDER II.— DIDYMIACE.E. 



Genus 10. DIDYMIUM Schrader, 

 sessile ; lime-crystals either scattered on 

 the membranous sporangium-wall, or 

 closely combined and forming a crust ; 

 capillitium often thickened at intervals 

 with dark nodes. 



1. D. difforme Duby. — Sporangia 

 hemispherical, on a broad yellowish base, 

 or plasmodiocarps, white ; lime-crystals 

 minute, densely' combined to form a 

 smooth, eggshell-like crust, often separating 

 from the iridescent inner sporangium-wall. 

 Columella none. Capillitium scanty, the 

 threads broad at the base, branched above. 

 Spores dark purple-brown, nearly smooth, 

 11 to 14(1 diam. 



Hab. On dead leaves. Common. 



. — Sporangia stalked or 



Fig. 



DlDYHIUM EFFUSUM Link. 



r. Two sporangia, one entire, 

 the other showingcolumella 

 and capillitium. Magnified 

 12 times. 



>. Capillitium and fragment ot 

 sporangium-wall, with crys- 

 tals ol calcium carbonate 

 and two spores. Magnified 

 200 times. 



