232 Mycetozoa of North America 



in Maine agrees in almost every particular with the description 

 of T. cascadensis, but is regarded as merely one of the variations 

 of T. alpina. 



9. Trichia lutescens Lister, Jour. Bot. 35: 216. 1897. 



Plasmodium watery pink (Lister). Sporangia sessile, widely 

 scattered or in small clusters, globose or bolster-shaped, 0.15 to 

 0.7 mm. diam., olivaceous yellow or yellow; sporangial wall mem- 

 branous, yellow, entirely free from granular deposits, usually 

 embossed with the impressions of the underlying spores. Capilli- 

 tium consisting of short or long, simple or branching, pale yellow 

 elaters 3-4.5 /x diam., marked with four or five distinct or faint 

 spiral bands, either tapering or blunt and bulbous at the tips. 

 Spores usually olivaceous in mass, or yellow, paler by transmitted 

 light, closely warted or spinulose, 10-12 /i diam. 



Type locality: Norway. 



Habitat: On dead wood. 



Distribution: California, Colorado, New Jersey, New York, 

 Virginia. 



Illustration: Lister, Mycetozoa ed. 3. pL 16 L figs. c-e. 



This species is allied to the variable T. contorta, but constant 

 in the absence of dark, granular deposits in or on the sporangial 

 wall. It has been rarely found in North America, probably due 

 to the widely scattered habit. The eastern collections are all 

 olivaceous in color with the mass of spores also olivaceous. The 

 capillitium in European specimens is variable, as in nearly every 

 species of the genus, with long or short elaters, simple, branched, 

 or sometimes forming a network, and the breadth, markings, and 

 terminals also vary. Species based on such variations are not 

 valid, in my opinion. 



10. Trichia erecta Rex, Proc. Acad. Nat. Sc. Phila. 1890: 193. 

 1890. (N. y. B. G. nos. 6399, 6400, 7617, 11192, type 

 material.) 



Plasmodium white (Lister). Total height 1 to 2 mm. Spo- 

 rangia scattered, stalked, erect, often in clusters of two or three 

 together, globose or turbinate, 0.5 to 0.7 mm. diam., bright 

 >'ellow, mottled with well-defined brown, dark brown, or purplish 

 red patches; sporangial wall membranous, pale yellow, densely 

 charged with brown granular matter at the base of the sporangium 



