210 A Monograpk of the Mijjcogastres. 



depressed, circular in outline, wall veiy thin, chalk-white, 

 polished, breaking away in irregular patches ; cohimcUd flattened, 

 v:hitc, small, mass of spores blackish-puiiDle ; threads of capil- 

 litium equal, about 2 ju, thick, frequently branching and com- 

 bined laterally to form a dense net; spores globose, smooth, 

 dingy violet, 9 — 10 fx diameter. 



Chondrioderma Saundersii, B. and Br., in Herb. 

 (Type in Herb. Berk., no. 10744.) 



On living fronds of ferns. Java. 



Resembling superficially circular forms of Chondriodcrmct dif- 

 formc,h\xi distinguished by the columella and dense capillitium. 

 Sporangia 2 — 3 mm. diameter, outline circular, often waved; a 

 very thin powdery layer of minute granules of lime is frequently 

 present on the mass of spores, which then appears dark grey. 



Chondrioderma afRne, Rost. 



Sporangia small, densely crowded on a common hypothallus, 

 irregularly angular, depressed, surface smooth, greyish-white; 

 columella irregular, small, white, rarely very conspicuous; 

 threads of capillitium thin, forming a net, dirty-violet, often 

 furnished with fusiform subviolaceous protuberances; spores 

 subviolaceous, densely aculeate, 10 — 14 /x diameter. 



Clwndriodcrma ajfine, Rost., Mon. App., p. 18; Sacc, Syll,, 

 1271. 



Poland ; Germany ; France. 



Appears to be very closely allied to Didymium sjmmarioides 

 of the present work (Chondrioderma spumarioides, Rost.) ; differ- 

 ing in the smooth surface of the sporangial wall, the dingy 

 colour of the capillitium, and the lai-ger, densely aculeate 

 spores. 



* * Sjwranfjiiim coloitrcd. 

 Chondrioderma testaceum, Rost. 



Sporangia gregarious or crowded, sessile on a broad base, 

 hemispherical or elliptical, rather depressed, sometimes irregular 

 from mutual pressure, outer wall smooth, from hrich-rcd to almost 



