262 A Monograph of the Mi/,ro(/astres, 



brown, with scattered, broad, irrcgularly-shapcd raised hands of 

 various lengths, 8 — 11 ju. diameter. 



Diachaea spkndcns. Peck, 30th Report, State Mus. Nat. Hist., 

 p. 50; Sacc, Syll., 1336. 



On leaves, &c. United States. 



For specimens of the present very distinct and beautiful 

 species, I am indebted to Mr. Harold Wingate, of Philadelpliia. 



Gregarious, about 1'5 mm. high, evidently allied to Diachaea 

 kucojxida, but abundantly distinct in the spore marking, and 

 the short reniform sporangia and columella. 



Diachaea suhsessilis, Peck. 



Gregai'ious or crowded ; sporangia subglobose, sessile, or with 

 a very short white stem, the walls delicate, iridescent with 

 various metallic tints; columella ohsolete ; capillitium and mass 

 of spores violet-brown ; spores globose, rough, '0004' — 'OOOo' in 

 diameter ( =■ about 12-5 fx ). 



Diachaea sicbsessilis, Peck, 31st Report, State Mus., p. 41. 



Fallen leaves. Adirondack Mountains, U. States. 



This is a most singular species, and apparently very rare. 

 In its lack of a distinct columella, it departs from the generic 

 character, but it cannot be placed in the genus Lamproderma, 

 for the same objection would hold there, and besides that, 

 another is found in the presence of lime granules in the stem. 

 Even when no distinct stem is present, a small whitish mass 

 of granules can generally be seen at the point of attachment. 

 The capillitium appears to originate at the base of the spor- 

 angium. The spores are larger, but less rough than those of 

 D. splendcns. (Peck.) 



I have had no opportunity of examining the present species, 

 hence can add nothing to tlie vague description of the epispore. 



Subord. Physarae. 



Craterium, Trent. 

 Sporangia usually distinct and stipitate, wall consisting of two 

 or three distinct layers, dehiscing by a sharply-differentiated 



