SUMMARY: Twelve strains of sp. from wild and cultivated leguminous plants growing in the Belgian Congo were examined. All were bacillary or filamentous, weakly Gram-positive, and produced occasional retractile, heat-resistant spores; all grew alternatively in the form of very tiny, Gram-negative rods with polar flagella (if motile), and without spores. Botanical evidence suggests that the host plants are primitive members of the family Leguminosae, and if the characters of these strains of are also to be regarded as primitive, this evidence supports the view that is related to and the Bacillaceae.


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