sp. nov., an endophytic actinomycete isolated from aerial parts of .

A novel actinomycete, designated NUM-2625, was isolated as an endophytic bacterium in aerial parts of , an endemic species in the Altai, Himalaya mountain chain area, collected from Khasagt Khairkhan Mountain in Mongolia. The 16S rRNA gene sequence of strain NUM-2625 showed the highest similarity to TT2-10 (99.4 %), KV-744 (99.

Herbidospora mongoliensis sp. nov., isolated from soil, and reclassification of Herbidospora osyris and Streptosporangium claviforme as synonyms of Herbidospora cretacea.

A Gram-reaction-positive aerobic actinomycete, designated strain MN08-A0118(T), which produced short chains of non-motile spores on the tips of long sporophores and formed yellow-brown colonies with branched substrate mycelium, was studied in detail to determine its taxonomic position. On the basis of 16S rRNA gene sequence analyses, strain MN08-A0118(T) was grouped into the genus Herbidospora, being most closely related to Streptosporangium claviforme (98.2%), Herbidospora osyris (98.

Cryptosporangium mongoliense sp. nov., isolated from soil.

A Gram-positive, aerobic, non-motile actinomycete, strain MN08-A0264(T), was isolated from soil sampled in Mongolia. The isolate formed pale to moderate yellowish brown colonies and branched substrate mycelium. On the basis of 16S rRNA gene sequence analysis, strain MN08-A0264(T) belonged to the genus Cryptosporangium and exhibited 97.

Actinophytocola burenkhanensis sp. nov., isolated from Mongolian soil.

A Gram-positive, aerobic, non-motile actinomycete, strain MN08-A0203(T), that formed pale yellow to orange-brown colonies and non-fragmented branched substrate mycelium is described. The strain, which produced very scanty aerial mycelium-like structures and scanty formation of spherical bodies on the aerial mycelium on Bennett's agar medium, was studied in detail to determine its taxonomic position. On the basis of 16S rRNA gene sequence similarity studies, strain MN08-A0203(T) grouped with the genus Actinophytocola, being most closely related to the type strain of Actinophytocola oryzae (97.