Lamproderma. 97 



divided from, the base, arcuate, variously interlaced, and combined 

 to form a dense net without free branches ; spores pale violet , 

 smooth, 6 7 /x diameter. 



Lamproderma arcyrionema, Host., Mon., p. 208; Sacc., Syll., 

 vii., 1, n. 1352. 



Poland. 



Judging from the description, the present species appears to 

 approach very closely such species as Stemonitis Friesiana. 



B. Spoils warted or echinulate. 



Lamproderma echinulatum, Rost. 



Sporangia globose, dark steel-blue or blackish, iridescent ; 

 stem thick at the base, becoming attenuated upwards, some- 

 times- 'sub-cylindrical, black, filled with large cells that become 

 smaller upwards; columella thick, filled with cells like the 

 stem, about one-third the height of the sporangium, sometimes 

 clavate; capillitium dense, originating from apex of columella 

 and at once forming an irregular netivork without the usual 

 undivided primary branches, tubes pale, irregular, arcuate, often 

 flattened and triangular at the nodes; spores globose, dingy- 

 purple, coarsely echinulate, 15 22 //, diameter. 



Lamproderma echinulatum, Rost., Mon., Append., p. 25 ; Sacc., 

 Syll., vii., 1, n. 1344. 



Stemonitis echinulata, Berk., Fl. Tasm., p. 268. 

 (Type in Herb. Berk., Kew.) 



Amongst moss. Tasmania. 



Gregarious, springing from a hypothallus, 3 4 mm. high, 

 Departing from the usual type of Lamproderma in having every 

 part of the capillitium combined to form a network with arcuate 

 branches. Differs from Comatricha in the capillitium origin- 

 ating from apex of thick columella only. Remarkable in having 

 the stem and columella filled with large cells. 



Lamproderma Listeri, Mass. (n. sp.) (figs. 202, 203). 



Sporangia globose, dark -purple or blackish, iridescent, lower 



portion sometimes remaining as a frill round the stem; colu- 



H 



