塊根鴨跖草

Plants in grasses on reddish volcanic rhyolite of on grassy, moderate hillside slope with Dahlia scherffii, Salvia emaciata, Verbena pinetorum, Milla biflora. Note short beak & 3 near equal petals. Original ID as C. coelestis, which is now considered a synonym under C. tuberosa

on coarse volcanic gravels and alluvial sands below rhyolitic tuff cliffs forming narrow canyon bottom drained by small perennial creek. Original ID as C. coelestis, which is now considered a synonym under C. tuberosa

in grasses on moist alluvial volcanic soils between a small perennial creek and a large bare outcrop of pale weathered rhyolitc tuff