It totally collected 22 leguminous species belonging to 11 genera , and all the species but melilotus alba , vigna sinensis , phaseolus vulgaris , and caragana polourensis were found capable of setting nodules ; of the nodule bearing leguminous species , there were four newly discovered ones , which were melissitus pamiricus , oxytropis bella , oxytropis trichosphaera , and astragalus alopecurus
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