Phylum：Myxomycota　>>　Class： Dictyosteliomycetes　>>　 Order： Dictyosteliales 
   
 
　BCRC Number： NO BCRC Number!  
   
　Scientific Name： Dictyostelium purpureum
 
   
   
　Author：

Dictyostelium purpureum Olive, Proc. Amer. Acad. Arts Sci. 37: 340. 1901.
   
 
 
 
 
　Description： Sorocarps usually solitary, unbranched, prostrate, phototropic. Sorophores pale purple, sinuous, 0.9-5.6 (-10) mm in length, tapering from bases to tips, usually surrounded by basal disks, with supporters if prostrate, bases conical, 18.0-38.8 (55.4) μm in diam at a level 50μm above the bottom, tips capitate, 4.2-11.2 (-12.5) μm in diam at a level 50 μm below the tip. Sori pale purple to dark purple or black, globose, 60-400 μm in diam. Spores hyaline, oblong, usually 1.4-2.8 times longer than broad, mostly 5.5-9.9 × 2.2-4.4 μm, without polar granules. Pseudoplasmodia, 1.0-4.5 mm in diam, centralized, migrating with sorophore formation.
 
 
 
 
 
　Specimens：

Taiwan, Taipei: Yangmingshan, alt. 500 m, Hsu 10; Taoyuan: Takuanshan, alt. 1600 m, Tai 2001-H2, Tai 2001-H5.
 
 
 
　Habitat： In forest soils.
 
 
 
　Distribution：

Africa, America, Asia and Europe.
 
 
 
　References：

Lin, SP and Yeh, ZY. 1999.
   
   
   
　Provided：

Z. Y. Yeh.
 
 
　Note： According to Hagiwara (1992), two forms of D. purpureum were recognized in Japan. One is named “temperate form”, which is characterized by large sorocarps (often exceeding 6 mm), purplish sori, and elliptical spores (2.1＜L/W＜3.0). Another form named “subtropical form” , which is characterized by medial sorocarps (not exceeding 6 mm), dark purple to black sori, and thicker spores (1.4＜L/W＜2.3).