24 Mycetozoa of North America 



11. Badhamia gracilis Macbr. ; Macbr. & Martin, Myxomycetes 

 35. 1934. (N. Y. B. G. no. 10626, type material.) 



Badhamia macrocarpa (Ces.) Rost. var. gracilis Macbr. N. A. Slime-Moulds ed. 

 2. 37. 1922. 



Plasmodium? Sporangia gregarious or clustered, subglobose 

 or irregular, 0.4 to 0.7 mm. diam., stalked or sessile, more or less 

 flattened or concave beneath, grayish white; sporangial wall mem- 

 branous, with scanty deposits of lime-granules. Stalk thin, mem- 

 branous, yellowish. Capillitium a very close network of delicate 

 strands filled with white lime-granules. Spores globose, purplish 

 brown, irregularly spinulose in patches with smooth areas between 

 the patches, 12-15 n diam. (Plate 6, fig. 4.) 



Type locality : Colorado. 



Habitat: On wood, leaves, herbaceous stalks, and living 

 plants. 



Distribution: *Arizona, California, *Canal Zone, Colorado, 

 Florida, Iowa, Kansas, Maryland, Nebraska, New Mexico, New 

 York, Puerto Rico, *West Indies. 



Illustration: Macbr. & Martin, Myxomycetes^/. 3 J. 37, 38. 



This species is undoubtedly related to B. macrocarpa, but is a 

 convenient center, with its small, stalked, umbilicate sporangia, 

 and delicate capillitium, for the forms often collected and widely 

 distributed. The spores are not reticulate, but the smooth areas 

 are often linear, and form persistent pressure ridges when the 

 spores contract. Occasionally the capillitium is coarser, with 

 expansions, or the lime densely massed in the center. Such col- 

 lections merge into the more robust B. macrocarpa, yet maintain 

 the graceful characteristics of B. gracilis. 



12. Badhamia Dearnessii Hagelstein, Mycologia 34: 117. 1942. 

 (N. Y. B. G. nos. 2530 type, 2512 and 2514 cotypes.) 



Plasmodium? Sporangia scattered or loosely clustered in 

 small developments, globose to subglobose, sessile on a narrow 

 base, grayish white, 0.5 to 1 mm. diam.; sporangial wall mem- 

 branous, with deposits of white lime-granules, often arranged to 

 show veins or thickenings, iridescent when limeless. Capillitium 

 a network of slender strands scantily charged with white lime- 

 granules, the latter sometimes absent, when the capillitium is ver\ 

 delicate and may appear j^ale >('llow in color. Sjjores free, glo- 



