Phlox tenuifolia, the Santa Catalina Mountain phlox, is a white flowered plant in the phlox family (Polemoniaceae) that can be found with stems climbing through shrubs and other vegetation growing on rocky slopes of the Sonoran Desert in Arizona.

[1]: 65  Botanist Richard Spellenberg has described its floral displays over supporting vegetation as "spectacular".

[1]: 65

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