Trichia 235 



flattened, or prominent lax and often rugged, spiral bands. 

 Spores ochraceous yellow, minutely spinulose, 9-11 n diam. 



Var. munda Lister, Jour. Bot. 35: 216. 1897, (N. Y. B. G. no. 11661, 

 authentic material.) 



Elaters pale brown or yellowish brown, marked with close and 

 regular spiral bands with long tapering points; spores yellow or 

 brownish yellow. 



Var. flavicoma Lister, Mycetozoa 172. 1894. (N. Y. B. G. no. 11650, 

 authentic material.) 



Sporangia minute, stalked, solitary, purplish brown with yel- 

 low lines of dehiscence; elaters and spores bright yellow. 



Type locality: Germany. 



Habitat: On dead coniferous wood; var. flavicoma on leaves 

 and plant stems. 



Distribution: The typical form is common in the United 

 States and Canada; var. munda, not so common; war. flavicoma, 

 New York. 



Illustration: Lister, Mycetozoa ed. 3. pi. 163, figs, a-d, j, k. 



Var. munda has the bands on the elaters close and regular, 

 otherwise it is similar to the typical form. It bears about the 

 same relation that var. inconspicua does to the typical form of 

 T. contorta. Var. flavicoma is a minute form on short, stout 

 stalks with yellow areolations, and is found on leaves and stems. 

 Var. cerifera G. Lister has not been reported from North America. 

 T. Botrytis is allied to T.floriformis, from which it is distinguished 

 in the field by the more yellowish color of the capillitium and 

 spores, and the usually smaller clusters of sporangia. 



14. Trichia floriformis (Schw.) G. Lister, Jour. Bot. 57: 110. 

 1919. 



Crater ium flor if orme Schw. Trans. Am. Phil. Soc. II. 4: 258. 1832. 



Plasmodium purple-brown (Lister). Sporangia free, or often 

 adhering in clusters of two to twenty, obovoid, subglobose, or 

 cylindrical, brown often mottled with darker shades, purplish red 

 or black; sporangial wall as in T. Botrytis. Stalks furrowed, 

 bright or dark red, translucent and free from refuse matter, 1 to 

 2 mm. or more long, usually adhering in clusters and arising from 

 a red hypothallus. Capillitium of pale brownish red elaters, 

 marked with four to six spiral bands, ending in tapering points, 



