Malacothamnus aboriginum is a species of flowering plant in the mallow family known by the common name Indian Valley bushmallow. It is endemic to the southern Coastal Ranges of California, primarily in the southern half of the Diablo Range and the Gabilan Range. Plants from San Diego County called Malacothamnus aboriginum in the past were described as the new species Malacothamnus enigmaticus in 2019.

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