302 A Monograph of the Myocogastres. 



Spumaria granularia, Schum., Fl. Saell., n. 1419 ; Fl. Dan., 



t. 1979, f. 2 (1803). 

 Spumaria minuta, Schum., Fl. Saell., n. 1419 ; Fl. Dan., 



t. 1979, f. 1 (1803). 

 Diderma vitellinum, Link, Herb. 

 Didymium glomeratum, Fr., Herb. 

 Didymium contextum, (3. glomerulosum, Fr., Sym. Gast., p. 20 



(1818). 



Diderma conglomeratum, Fr., I.e., iii., p. Ill (1829). 

 Diderma granulatum, Fr., l.c., iii., p. 110 (1821). 

 Diderma minutum, Fr., I.e., iii., p. Ill (1829). 

 Diderma rugulos-um, Wein., I.e., p. 594 (1836). 

 Diderma flavum, Fr., in Wein., I.e., p. 593 (1836). 

 Leocarpus minutus, Fr., Sm. Veg. Scan., p. 540 (1849). 

 Leocarpus granulatus, Fr., Sm. Veg. Scan., p. 541 (1849). 

 Garcerina conglomerata, Fr., Sm. Veg. Scan., p, 451 (1849). 



^ Physamm rubiginosum, Rost. : 



Sporangia gregarious, usually nearly globose, attached by a 

 broad or narrow base, wall double, outer layer brittle, breaking 

 away in flakes, from dirty orange to clear vermilion, inner wall 

 very thin, grey; columella absent; capillitium copious, nodes 

 and interstitial swollen portions numerous, variable in size, 

 containing yellow or reddish granules of lime ; spores dingy 

 violet, 10 13 p. diameter, with a slight indication of being 

 verruculose. 



Physamm ruMginosum, Rost., Hon., p. 1 04 ; Sacc., Syll., vii., 

 1, n. 1180. 



On moss, &c. Sweden ; Finland ; United States. 



Sessile, globose, 1 1'5 mm. diameter; distinguished by the 

 bright colour of the outer layer of the sporangial wall, the very 

 thin, grey, inner layer, absence of columella and spores which 

 vary from being perfectly smooth to very minutely verruculose. 

 The granules of lime present on the outer wall of the spor- 

 angium, when examined under the microscope, are seen to be 

 mostly minute and yellow, amongst which are a few scattered, 

 larger ruby-red lumps. 



