BADHAMIA 37 



real or simulated. Blackhawk Co., Iowa; communicavit Dr. Jessie 

 Parish. See Plate XX., 1, \ a, \ b. 



Reddish or roseate forms sometimes appear in colonies otherwise 

 as described. It differs from B. affinis in the size and character of 

 the spores, in color and character of the capillitium, habit and surface 

 markings. 



7. Badhamia macrocarpa {Ces.) Rost. 



1855. P/iysarum macrocarpon Cesati, Flora, XXXVIII., p. 271. 

 1875. Badhamia macrocarpa (Ces.) Rost, Mon., p. 143. 



Sporangia scattered or closely aggregate, crowded globose or sub- 

 globose, generally sessile, rugulose, white ; the peridium membranous, 

 white above, below yellowish or brown; capillitium not abundant, 

 thoroughly calcareous, the nodes broad, conspicuous, the connecting 

 tubules rigid ; columella none ; hypothallus scant or none ; spore-mass 

 black, spores non-adherent, by transmitted light bright clear brown, 

 thickly spinulose all over, large spherical, 12-15 /t. 



Closely resembles externally B. paniceaj but is easily distinguished 

 by larger and remarkably spinulose spores, in this particular unrivalled 

 in the entire genus. European authors describe both sessile and 

 stipitate forms. American specimens generally are sessile and for the 

 most part closely crowded, almost heaped ; but — Prof. Bethel finds 

 this in winter everywhere on fallen rotting stems of Opuntia and on 

 the bases of dead Yucca leaves, still attached. Associated with the 

 typical phase and often occurring alone on the Yucca leaves is a dis- 

 coidal form which when first sent in (1908) was called var. gracilis. 

 Presented alone to one ignorant of its history and associations, it 

 would surely pass for a distinct species. This stalked phase is very 

 delicate; the stipe pale brown, or yellow. See Plate II., Fig. 9. See 

 also Sturgis Col. Coll. Pub. XII., 408. 



Badhamia orbiculata R 



ex. 



Plate XIV., Fig. 4. 



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



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

 1911. Badhamia orbiculata Rex., Lister, Mycetozoa, 2nd ed., p. 37. 



