Basalt daisy (Erigeron basalticus) is a cliff dweller, found exclusively along the Yakima River Canyon and Selah Creek. There you will find it tucked into crevices and cracks of the basalt cliffs formed in the late Miocene (5 to 11 million years ago). There are six known populations in Washington State. Over the past few years Rare Care has made a concerted effort to re-monitor all known occurrences, and we only have one left to visit!