BADHAMM 41 



This is Badhamia hyalina (Pers.) Berk., Rost., Mon., p. 139; but 

 Rostafinski himself admits that the two species, here united, as he de- 

 fined them, are very much alike, having "the same spores and capil- 

 litium", differing in the form of the sporangium, an inconstant fea- 

 ture. Bulliard's name has precedence; his descriptions of this and 

 the preceding species are remarkable. 



The peculiarly adherent spores distinguish the species from B. 

 utricularis; and the sporangia sessile or with short but strand-like 

 stipes, distinguish it from B. papaveracea. 



The description above is for the typical European form. Lister 

 expresses doubt whether this occurs in the United States. The form 

 from Iowa which is the basis for the inclusion of the species in N. A. 

 S. is, we believe, nothing else than B. capsulifera (Bull.) Berk. The 

 form approaches B. populina as this is presented in Colorado. The 

 Iowa specimens are white, aggregate, superimposed, etc., but have the 

 capillitium and spores exactly as described for the type. Accordingly 

 B. populina as this occurs in Colorado has been for years referred to 

 the Berkeley species. The thicker more strongly calcareous peridia 

 constitute, as would appear, the principal difference in the forms from 

 Colorado. See next species. 



13. Badhamia populina List. 



1904. Badhamia populina List. Jour. Bot., XLIL, p. 129. 

 1911. Badhamia populina List. Mycetozoa, 2nd ed., p. 32. 



Plasmodium white; sporangia sessile, crowded, heaped, large, 1.5 

 mm., rarely stipitate, globose or ovoid, white; stipe when present 

 brown; capillitial strands broad, calcareous; spores clustered, 16-20 

 in a cluster, purple-brown, roughened and sometimes marked by ob- 

 scure ridges and bands, 10-12 yw. 



Generally distinguishable by its unusually large calcareous, white 

 sporangia. The peridia are strongly calcareous, shell-like in texture. 

 In some case the color is tinted with rose. 



This species is very near B. capsulifera as recognized in the United 

 States. When white the Colorado material corresponds almost exactly 

 with the forms collected in Iowa, and regarded as representing the 



