114 Mycetozoa of North America 



granules, continued above into the conical or short-cylindrical 

 columella. Capillitium radiating from all parts of the columella, 

 composed of rather rigid, violet-brown threads, branching and 

 anastomosing, tapering to the hyaline extremities. Spores olive- 

 brown, marked with small, scattered warts, and several patches 

 composed of clusters of warts, 10-12 ^ diam. 



Type locality: North Carolina. 



Habitat: On the bark of dead and mossy trees. 



Distribution: North Carolina, Pennsylvania, Tennessee. 



Illustration: Lister, Mycetozoa ed. 3. pi. 101. 



This beautiful species is rare, and so far has been found only 

 in the States mentioned. It forms large, densely crowded colo- 

 nies of sporangia, and is readily recognized in the field by the 

 prevailing orange color of the stalks and hypothallus. When 

 somewhat imperfectly developed, the color of the sporangia may 

 be blue, but the normal color is brown, if properly matured. 

 Similar conditions are found in other species of Diachea, and also 

 in species of Lamproderma. 



7. Diachea cylindrica Bilgr. Proc. Acad. Nat. Sc. Phila. 57: 524. 

 1905. (N. Y. B. G. no. 12707, type material.) 



Comatricha cylindrica (Bilgr.) Macbr. N. A. Slime-Moulds ed. 2. 173. 1922. 



Plasmodium? Sporangia clustered in small groups, sessile, 

 cylindrical, 1 to 1.7 mm. high, 0.5 to 0.65 mm. thick, shining, 

 iridescent bronze . or steel-gray; sporangial wall membranous, 

 colorless, persistent, at length breaking away in large fragments. 

 Columella without lime, pale brown, slender, tubular, extending 

 nearly to the apex of the sporangium, or breaking into irregular, 

 branching strands. Capillitium of branched and anastomosing, 

 purplish brown threads, spreading from all parts of the colu- 

 mella, slender and colorless at the tips. Spores pale purplish 

 gray, 11-12 /i diam., reticulate with small or large meshes, the 

 lines of the reticulations composed of minute spines. 



Type locality: Pennsylvania. 



Habitat: On leaves and twigs. 



Distribution: Florida, New Hampshire, Pennsylvania. 



Illustration: Lister, Mycetozoa ed. 3. pi. 103, figs. a-e. 



This species is rare, and following the New Hampshire and 

 Pennsylvania collections, was not found again for 35 years until 

 Dr. H. C. Beardslee collected it in Florida in 1940. It is allied 



