Phylum：Zygomycota　>>　Class： Zygomycetes　>>　 Order： Glomales 
   
 
　BCRC Number： NO BCRC Number!  
   
　Scientific Name： Entrophospora infrequens
 
   
   
　Author：

Entrophospora infrequens (Hall) Ames et Schneider
   
 
 
 
 
　Description： Azygospores produced singly in soil; spores formed within a slightly tapering hypha, terminating in a globose, subglobose swllen tip, 150-175 μm diam; hyphal terminus white to subhyaline, becoming transparent as contents empty to form a spore. Azygospores reddish brown to brown at maturity, globose, subglobose, ovoid, 120-135 × 130-150 μm. Spore wall: Two layers (L1 and L2) are distinguised. The outer layer (L1), hyaline, confluent with the wall of saccule, ephemeral, up to 11 μm thick. L1 usually covered by a thin membranous sublayer, 1 μm thick. Layer 2 (L2), yellow-brown or orange brown, laminated, 0.5-1 μm thick, covered by polygonal spins 3-5 μm high and 1.5-2.5 μm wide at base. Spins separated from each other by less than 1 μm. Flexible inner walls: One inner wall with two layers is distinguished in all spores. Inner wall, hyaline, flexible, 3-4 μm thick. L1: membranous, hyaline, looks minutely beaded in PVLG. L2: hyaline, 3-3.5 μm thick. These two layers are closely adherent. Sometimes, a membranous inner most layer was visible in some crushed spores. Inner wall staining inert or pale pink in the Melzer’s reagent. Site of the connecting hyphal attachment from the hyphal terminus frequently visible on the mature azygospore, 17.5-20 μm diam; the site of connecting hyphal attachement from the hyphal stalk, visible at all stages, 15 μm diam. Azygospores often attached with empty hyphal teminus in soil, having a dumbbell shaped configuration.
 
 
 
 
 
　Specimens：

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　Habitat： null
 
 
 
　Distribution：

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　References：

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　Provided：

C. G. Wu
 
 
　Note： Entrophospora infrequens is similar to E. macrospora by its spore color, and wall structure. However, E. infrequens is very distinguished from other species by its spiny ornamentation. Spin structures could also be seen in the neck between spore and saccule. This species has been found associated with A. tuberculata, A. rhemii, Glomus claroideum, G. constrictum, and Entrophospora columbiana.