Badhamia 25 



bose, minutely and closely spinulose over the entire surface, pur- 

 plish brown with a narrow pale area around the spores, 13-16 /x 

 diam. (Plate 7, fig. 1.) 



Type locality: Island of Jesus, Quebec. 



Habitat: On dead spruce twigs and sticks. 



Distribution: Maine, Quebec. 



Illustration: Hagelstein, Mycologia34: 117,/. 1. 



The large, dark spores resemble those of B. macrocarpa, and 

 the slender capillitium that of B. foliicola. The pale spinulose 

 band encircling the spores is not known in any other species of 

 Badhamia. 



13. Badhamia affinis Rost. Mon. 143. 1874. 



Plasmodium white, then cream-colored (Lister). Sporangia 

 scattered or in numerous, small, close clusters, hemispherical or 

 depressed, flattened or umbilicate beneath, often curved or ir- 

 regular in the clusters or inclining to plasmodiocarps, grayish 

 white, rugulose, stalked or sessile, 0.5 to 1.5 mm. diam. ; sporangial 

 wall rough, with included clusters of lime-granules, rarely smooth. 

 Stalks, when present, black, furrowed. Capillitium a network of 

 tubes filled with white lime-granules. Spores violet-brown, closel> 

 and minutely spinulose, 10-15 n diam. 



Var. orbiculata (Rex) G. Lister, Mycetozoa ed. 3. 16. 1925. 

 Badhamia orbiculata Rex, Proc. Acad. Nat. Sc. Phila. 1893: 372. 1893. 

 (N. Y. B. G. no. 5467, type material.) 



Sporangia smaller, scattered, discoid, much flattened or con- 

 cave above and concave beneath, usually stalked. Capillitium 

 often of slender, simple tubes. 



Type locality: Chile. 



Habitat: On bark of dead trees. 



Distribution: The typical form and variety are common and 

 widely distributed in North America. 



Illustration: Lister, Mycetozoa ed. 3. pi. 8, figs, d-f (var. 

 orbiculata). 



This species forms large developments, the typical form usu- 

 ally on poplar, and var. orbiculata often on locust. The Plasmo- 

 dium, when forming sporangia, spreads in horizontal rings, which 

 closing, leave circular or linear depressions in the resultant, flat- 

 tened sporangia, and characteristic of the species. The capillitium 

 is about the same as that of B. macrocarpa, or occasionally B. 



