78 Mycetozoa of North America 



pale violet-gray, 5-6 m diam., marked with three to five small, 

 scattered clusters of minute warts on the hemisphere. 



Type locality: South Nigeria. 



Habitat: On dead wood. 



Distribution: ^Illinois, Iowa, Maryland, ^Missouri, *Ne- 

 braska, *Ohio, Pennsylvania, ^Washington. 



Illustration: Lister, Mycetozoa ed. 3. pi. 203. 



This species has been reported frequently from the western 

 states, but seems to be rare along the Atlantic seaboard. It 

 dififers from Physarum virescens in color, habit, and habitat. 



62. Physarum alpinum G. Lister, Jour. Bot. 48: 73. 1910. 

 (N. Y. B. G. no, 5494, type material.) 



Physarum virescens Ditm. var. alpinum A. & G. Lister, Jour. Bot. 46: 216. 



1908. 

 Physarum alpinum G. Lister; Macbr, N. A. Slime-Moulds ed. 2. 54. 1922. 



Plasmodium? Fructification sporangiate. Sporangia sessile, 

 scattered or loosely clustered, subglobose, 1 to 1.4 mm. diam., 

 yellow, seated on a membranous hypothallus; sporangial wall 

 with an outer, dense crust of yellow lime, lightly affixed and 

 separating in flakes from the white, membranous, inner wall. 

 Capillitium a network of hyaline threads with numerous large, 

 angular, and branching, yellow or yellowish lime-knots. Spores 

 purplish brown, faintly warted, 11-12 jx diam. 



Type locality: California. 



Habitat: On dead wood. 



Distribution: California, *Washington? 



Illustration: Lister, Mycetozoa ed. 3. pi. 62, figs. d-f. 



The foregoing description is based solely on the collection 

 made by Harkness in California, and named in Phillips's herba- 

 rium Badhamia inaurata. A portion of the collection, finely ma- 

 tured, is in the Herbarium of the New York Botanical Garden. 

 Miss Lister has added, jointly as typical, certain forms on herba- 

 ceous stalks found in Switzerland. Five collections of the Swiss 

 form made by M. Ch. Meylan, and courteously sent, are in the 

 Herbarium here, and are quite different from the California 

 specimen. The fructification is primarily plasmodiocarpous, 

 some of the plasmodiocarps being more than 25 mm. in length. 

 The walls are firm, with massive, very pale yellow lime. Some 

 of the few smaller plasmodiocarps, which may be considered as 



