96 A Monograph of the Myxogastres. 



bright coppery tinge, basal portion often remaining as a frill 

 round the stem; stem elongated, tapering upwards, expanding 

 at the base into a minute, circular hypothallus, brown; colu- 

 mella cylindrical, not more than one quarter the height of the 

 sporangium, producing at the apex several primary branches, 

 which are at once divided into numerous arcuate branches of equal 

 thickness that combine to form a dense net, threads broWn, often 

 studded with organic lumps ; spores lilac-brown, globose, smooth, 

 14 16 /u. diameter. 



Rtemonitis physarioides, A. and S., Var. suboeneus, Berk., in 

 Herb., n. 10842. 



On slender twigs, moss, &c. Britain (Bulmer, Yorks) ; United 

 States. 



Remarkable in the capillitium consisting entirely of equal, 

 rather stout, arcuate threads combined into a network of small, 

 sub-equal meshes. From 2'5 3 mm. high, sporangium rarely 

 attaining to *5 mm. diameter, constantly the colour of new 

 copper. 



Lamproderma leucosporum, Rost. 



Sporangia spherical, about '5 mm. diameter, with various 

 metallic tints ; stem black, shining, subulate, thin, passing into 

 the sporangium as an exactly cylindrical, truncate columella; 

 threads of the capillitium from, the base variously branched and 

 combined to form a compact network, blackish when the spores 

 are blown away ; spores pale violet, 8 9 /u. diameter, smooth. 



Lamproderma leucosporum, Rost., Mon., App., 26 ; Sacc., Syll., 

 vii., 1, n. 1350. 



Lamproderma nigrcscen^ Rost., Mon., p. 205 (in part). 



Germany. 



Lamproderma arcyrionema, Rost. 



Sporangia spherical, very small, with a silvery metallic lustre, 

 stipitate, stem straight, subulate, black, shining, dilated into a 

 very thin, blackish-purple hypothallus, and passing into the 

 sporangium as a very slender, cylindrical, truncate columella; 

 branches of, the capillitium everywhere of uniform thickness, 



