66 THE NORTH AMERICAN SLIME-MOULDS 



rare. Both colors are shown in specimens distributed. N. A. 

 F., 2494. 



Common eastward, New England, Pennsylvania, Ohio, etc. 

 Not reported west of the Mississippi River. 



Whatever the color, the spores are in every case positively 

 diagnostic. The episporic markings are unlike those of any 

 other species in the present order. Dr. Rex describes some 

 New York forms as provided with a short but distinct stipe. 

 Such forms resemble externally ScypJdum rubiginosum (Chev.) 

 Rost. The hypothallus is also unique. 



5. BADHAMIA AFFINIS Rostafinski. 

 1875. Badhamia affinis Rost., Man., p. 143. 



Sporangia aggregated, cespitose and sessile, or sometimes 

 stipitate, depressed above, flat or umbilicate below, the wall 

 grayish white, rugulose, and more or less calcareous-scaly; 

 the stipe when present erect or sometimes nodding, black or 

 brownish black ; hypothallus scanty ; columella none ; capilli- 

 tium not abundant, white, the nodes somewhat expanded ; spores 

 globose, minutely roughened, violet brown, large, 16-17 M- 



Chiefly on moss, the pale ashen sporangia generally very 

 small, mounted on the tips of the leaves, sometimes sessile, 

 sometimes with a distinct black stipe in which case the perid- 

 ium is distinctly umbilicate. Specimens from Kansas referred 

 here have the stipe pale, rugose, long, about twice the sporan- 

 gium ; habitat bark. 



Rare. New York, Ohio, Kansas. 



6. BADHAMIA ORBICULATA Rex. 



PLATE XIV., Fig. 4. 



1893. Badhamia orbicnlata Rex, Proc. Phil. Acad., p. 372. 



1894. Badhamia macrocarpa Rost., Lister, Mycetosoa, p. 34 (in part). 



Sporangia stipitate or sessile, orbicular discoidal, irregularly 

 elongated or plasmodiocarpous, averaging about I mm. in 

 width, generally stipitate, and when stipitate, flattened or de- 



