Phylum:Zygomycota >> Class: Zygomycetes >>  Order: Mucorales 
   
 
 BCRC Number 32490      
   
 Scientific Name: Mucor racemosus f. sphaerosporus
 
   
   
 Author:

Mucor racemosus Fresenius f. sphaerosporus (Hagem) Schipper, Stud. Mycol. 12: 23. 1976.

Basionym: Mucor sphaerosporus Hagem, Untersuchungen uber norwegische Mucorineen I, P. 22. 1908.

   
 
 
 
 
 Description: Colonies pale-yellow, up to 1 mm in height, filling Petri dish at 20°C in 5 days; sporagniophores erect, 5.0-10.0 μm in diam, branched repeatedly or sympodially, very short arising from the substrate; sporangia globose, white or pale-yellow at first then gray black to black at maturity, tall sporangia 70.0-80.0 μm in diam, short sporangia 40-55 μm in diam, walls of sporangia slowly diffluent, persistent, incrusted; columellae globose to ellipsoidal or obovoid, usually with truncate base and collars, 10.0-25.0 v 15.5-27.5 μm, faintly; sporangiospores mostly globose or ovoid, 3.9-4.9 s 3.9-5.9 μm; growth from 5°C to 37°C, optimum growth temperature at 20°C to 30°C, sporulation from 10°C to 30°C.
 
 
 
 
 
 Specimens:

BCRC 32490, from soil, Taiwan, Taipei.

 
 
 
 Habitat: wood, wood block in cellar, soil, dung of mouse, storage rot in Cucurbita maxima, steamed sweet potato, sausage, 'Brühwurst', cheese, dung, soil, litter, salt marsh.
 
 
 
 Distribution:

worldwide distribution.

 
 
 
 References:

Domsch, KH et al. 1980; Liou, GY et al. 1993; Schipper, MAA 1976.

   
   
   
 Provided:

C. Y. Chien and G. Y. Liou

 
 
 Note: This species is distinguished by repeated branching of the sporangiophore, smooth columellae and subglobose sporangiospores.