Didymium. 239 



Spores smooth, or with sometimes the slightest suggestion of 

 granulation under a T \. objective. 



Didymium pezizoideum, Mass. TncW^^oro. y 



Sporangia stipitate, discoid, pezizaeform, greyish-white, wall 

 single, becoming furfuraceous ; stem subulate, curved above, 

 brownish, smooth, expanding at the base into a small, shining, 

 closely adnate hypothallus ; threads of the capillitium combined 

 to form a net, spores smooth, violet, 8 9 JJL diameter. 



Tricham'pliorcL pezizoidea, Jungh., Fl. Cr., Java, p. 12, t. 2, f. 9. 



Chondrioderma2)ezizoideum,Rost.,M.on.,ip. 424, f. 122; Cooke, 

 Myx. Brit, fig. 122; Sacc., Syll., 1256. 



On rotten trunks. Java. 



> 



Didymium platypus, Hanzl. *> 



Greyish-white, primrose, sporangia scattered, convex above, 

 deeply umbilicate below ; stem cylindrical, dilated in a discoid 

 manner at the apex ; spores globose, smooth, blackish, 8 /* diam., 

 capillitium scanty, formed of black tubes connected in a reticulate 

 manner, columella absent. 



Hanzl. Ein neue Myxog. typus in Just. Bot. Jahresbericht, 

 1872, p. 155 ; Sacc., Syll., 1326. 



Agaricus platypus, Bischoff (sec. Hanzl.). 



On putrid plant stems. Hungary. 



* * Spores warted. 

 Didymium echinospora, Mass. (n. sp.).tWp***v TC 



Sporangia globose, usually with a shallow umbilicus below, 

 wall membranaceous, almost colourless, with a dense coat of 

 white amorphous particles of lime, upper portion breaking away 

 in flakes during dehiscence, and leaving a permanent cup-like 

 basal portion with torn edges; stem elongated, slender, erect, 

 very slightly attenuated upwards, white, rugulose below; colu- 

 mella absent ; capillitium very dense, threads lilac-brown, about 

 2 /A thick, bifurcating, and towards the apex freely anastomosing 



