BADHAMIA 35 



tion. There is no evidence, in the abundant material at hand, that the 

 two forms, although perhaps sometimes associated, arise from the 

 same Plasmodium. 



Badhamia mandshurica Skvortz., Phil. Jour. Sc. 46 : 86, 1931, refers, 

 perhaps, to a small, dark, heaped phase of B. macrocarpa. 



Throughout the United States, Bolivia; Europe, Java, Japan. 



14. Badhamia gracilis Macbride n. sp. 



PL III, Figs. 37, 38. 



1913. Badhamia macrocarpa Rost. ex Sturgis, Colo. Coll. Pub. Sc. Ser. 12 : 438, 

 in part. 



1922. Badhamia macrocarpa (Ces.) Rost. var. gracilis Macbr., N. A. Slime- 

 Moulds ed. 2. 37. 



Sporangia gregarious or clustered, globose or ovate, 0.5-0.7 mm. 

 in diameter, stipitate or sessile, gray when filled with spores; peridium 

 thin, pure white, sparsely flecked with white calcareous nodules; stipe 

 when present thin, delicate, straw yellow, sulcate, more or less twisted, 

 about equal to the sporangium; capillitium a delicate mesh work of 

 tubules of nearly uniform diameter; hypothallus scanty, pale yellow- 

 ish; spores free, globose or somewhat angular, dark violaceous brown, 

 closely and irregularly warted, and mostly with a very coarse network 

 of about 1-6 meshes to the hemisphere covering the surface, 

 12-15 fi. 



The combination of close warts and coarse reticulum on the spore 

 wall is distinctive, although suggested by the spores of B. populina, 

 B. cinerascens and B. lilacina. Most of our material is on Yucca or 

 cactus; the Iowa collection on bark. 



Iowa, Colorado, New Mexico, Arizona, California and the West 

 Indies. 



15. Badhamia cinerascens Martin 



Jour. Wash. Acad. Sc. 22 : 88. 1932. 

 PL III, Fig. 44. 



Sporangia globose or flattened, sessile or occasionally borne on a 

 pallid, membranous stipe, 0.7-1.5 mm. in diameter, densely aggregated 

 and more or less superimposed, on a pallid membranous hypothallus; 

 peridium thin, fragile, ashy, covered by a dense network of calcareous 

 thickenings; capillitium abundant, white, badhamioid under lens, but 

 under the microscope exhibiting numerous thread-like tubules; spores 

 intensely black in mass, spherical or somewhat angular, non-adherent, 

 deep purple-brown by transmitted light, densely and strongly spinu- 

 lose, and often exhibiting an imperfect, coarse reticulation, always with 



