109 



A. aurantiaca, sp. nov. Tab. 3, fig. 4 and 9 — 11. 



Sporangia gregareous , ovate or short cylindrical , stipitate. 

 Stem of the same length or shorter than the sporangium. Thicke- 

 nings on the inner side of the receptacle in the form of fine 

 warts. Wall, capillitium and mass of spores brick-red to orange. 

 Tubes of the capillitium with irregularly connected, close stan- 

 ding ring-like thickenings, 5 — 7 broad. Spores smooth, 10 — 11 

 fji diam. 



On rotten wood. — Autumn. Jutland. 



Didymium Gookei (Rfski.) Raunkiær. Tab. 5, fig. 5. 

 Chondroderma Cookei Rostafinski, Sluz., Dodatek, pag. 17. 



Sporangia gregareous, rounded or by their mutual pressure 

 polygonal, flattened, sessile. Wall single, greyish-black, covered 

 partly with single, more or less sharp-edged grains, partly with 

 groups of cristals. Columella not present or not evident. Threads 

 of the capillitium bright violet, undulated, combined into a net, 

 expanded in numerous small, spherical fusiform and a few large, 

 irregular, angled swellings. Spores warted, dull-violet, 10 — 13 

 IJL diam. 



On living leaves of Petasites officinalis. Sealand. 



D. affine, sp. nov. Tab. 5^ fig. 3 — 4. 



Sporangia spherical — hemisperical, stipitate. Stem thin, of 

 equal length or longer than the sporangium, expanded into a 

 circular hypothallus at the base, bright brown. Wall grey, 

 wilhout lime, under the microscope colourless. Columella glo- 

 bose — semiglobose, with colour of the stem or brighter. Threads 

 of the capillitium nearly hyaline, expanded in numerous short- 

 fusiform, brownish-violet swelhngs. Spores smooth or delicately 

 warted, 8 — 9 diam. 



On germinating seeds in laboratorium. Copenhagen. 



LamprodermaLycopodii (Fr.). Crihraria Lgcopodii 

 Fr. Nees! in litt. . Stemonitis cribrarioides Fries, Syst. 

 myc. Ill, pag. 163. 



Sporangium single, globose, sessile, on a violet-brown hypo- 

 thallus. Wall, columella, capillitium and spores violet-brown. 

 The lower part of the wall remains, with irregular lattercd mar- 



