Report of the Botanist. 41 



lemon-yellow ; spores brown in the mass, globose or subglobose, smooth, very- 

 unequal in size, .0003-.0012' in diameter. 



Decaying wood. Griffins. Sept. 



This is a most singular fungus, and but little of it was found. The capilli- 

 tium though abundantly charged with lime granules, does not appear to have 

 them continuous throughout its whole extent, and the plant would, therefore, 

 seem to belong to the genus Physarum. On the other hand, the larger 

 bodies which I have regarded as spores, give indications that they may be 

 really an investing membrane, which encloses the true spores, for they are 

 often found ruptured, though I have not been able to see them discharging 

 spores or containing them. They are colored like the spores, and there are 

 all manner of intermediate sizes between the largest and smallest. It thus 

 appears to be neither a good Physarum nor a good Badhamia, though with 

 close relations to both. For the present, I leave it in the genus Physarum. 

 P. rubiginosum is said to have the sporangia walls and the granules of lime — 

 both scarlet — which is not the case with our plant. 



Badhamia affinis R. 



Twigs and leaves. Sandlake. Aug. 



DlDYMIUM EXIMIUM Pk. 



Sporangia subglobose, slightly umbilicate beneath, whitish or subcinereous, 

 mealy with numerous granules ; stem slender, erect, even, pallid or subru- 

 fescent, blackish at the base ; columella orbicular, discoid, dull-yellowish or 

 pallid ; capillitium whitish ; spores globose nearly smooth, blackish in the 

 mass, .00035 / -.0004 / in diameter. 



Fallen leaves. Adirondack Mountains. Aug. 



I have not seen the full description of D. discoidewm, which is also said to 

 have a discoid columella, but as its capillitium is said to be brown, it is prob- 

 ably distinct from this species. In our plant the sporangium, after bursting 

 at the top, sometimes breaks loose from the stem and slides downwards, thus 

 protruding and revealing to sight the flattened disk-like columella. 



DlDYMIUM ANGULATUM Pk. 



Sporangia delicate, subglobose, whitish, externally mealy with numerous 

 granules and crystals of lime ; stem short, whitish ; columella subglobose, 

 white or pale yellow ; capillitium sparse, delicate, whitish or slightly colored ; 

 spores irregular, angular, blackish in the mass, .OOOSS'-.OOOS' long. 



Fallen leaves. Adirondack Mountains. Aug. 



Chondrioderma difforme Pers. 



Fallen leaves, bark and fern stems. Adirondack Mountains. Aug. 



DlACHiEA SUBSESSILIS Pk. 



Gregarious or crowded ; sporangia subglobose, sessile or with a very short 

 white stem, the walls delicate, iridescent with various metallic tints ; colum- 

 ella obsolete ; capillitium and mass of spores violet-brown ; spores globose? 

 rough, .0004'-.0005' in diameter. 



Fallen leaves. Adirondack Mountains. Aug. 



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 



