162 Mycetozoa of North America 



dividing above into several primary branches of the capillitium; 

 these fork repeatedly and end at the surface in short, rigid, diverg- 

 ing branchlets. Spores violet-gray, distinctly spinulose, 8.5- 

 9.5 n diam. 



Type LOCALITY: Scotland. 



Habitat : On bark and mosses. 



Distribution: Kansas. 



Illustration: Lister, Mycetozoa ed. 3. pi. 210, figs. a-e. 



The Kansas specimens were obtained by Mr. Travis E. Brooks 

 in moist chamber developments on walnut bark. The stalks are 

 much longer than described originally, so the present description 

 is written to conform to the Kansas material. The stalk is un- 

 usual, translucent, reddish brown at the top, shading to yellowish 

 brown at the base, and tubular with an inner strand of parallel 

 fibres. This is characteristic of the species. 



9. Comatricha extendens Hagelstein, Mycologia 27: 374. 1935. 

 (N. Y. B. G. no. 1404, type.) 



Plasmodium? Total height 2 to 4 mm. unexpanded. Spo- 

 rangia gregarious, stalked, purplish brown, globose, 0.4 to 0.65 

 mm. diam. ; sporangial wall firm, finally evanescent. Stalk subu- 

 late, slender, black, shining, from 4 to 6 times the size of the 

 sporangial body, rising from a distinct hypothallus; the stalk 

 either expanded at the top or splitting into several parts, as many 

 as eight, which form the primary branches of the capillitium. 

 Columella lacking or obsolete. Capillitium a tangled mass of 

 anastomosing purplish brown threads springing directly from the 

 stalk at the base of the sporangium; threads stouter at the base, 

 becoming uniformly more slender, branched, somewhat looped 

 or netted, but without a surface-net; capillitium more or less 

 elastic, ultimately expanding into a cylindrical plume several 

 times the size of the sporangial body. Spores brownish violet, 

 minutely but distinctly spinulose, 8.5-10 /x diam. (Plate 11, 

 FIGS. 3, 4.) 



Type locality: Long Island, New York. 



Habitat: On dead wood. 



Distribution: Known only from the type locality. 



Illustration: Hagelstein, Mycologia 27: pi. 34. 



The type collection was made at Mitchell Field, Long Island. 

 It was fairly large, in a fine state of maturity, and all the sporangia 

 were uniform in the characters given. It seems to be the widest 



