Didyminm. 230 



Spores smooth, or with sometimes the shghtest suggestion of 

 gramilatiou under a -pV objective. 



Didymium pezizoideum, ]\Iass. 



Sporangia stipitate, discoid, ijczizacfonn, greyish-white, Avail 

 single, hccoming fnrfuraceous ; 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 /x diameter. 



Trichampliora ijczizoidea, Jungh., Fl. Cr., Java, p. 12, t. 2, f. 9. 



Chondrioderma2)ezizoidcu'm,'Ro&t.,'Mon.,Tp. 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 aj^cx ; spores globose, smooth, blackish, 8 n. diam., 

 capillitium scanty, formed of black tubes connected in a reticulate 

 manner, columella absent. 



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

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



Agaricus platypus, Bischoff (sec. Hanzl.). 



On putrid plant stems. Hungary. 



* * Spores icartcd. 

 Didymium echinospora, Mass. (n. sp.). 

 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 cu2^-like 

 hasal 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 /x thick, hifurccding, and towards the apex freely anastomosing 



