Natural History Wanderings

DesertUSA reports that

Big Bend National Park‬ Reports: Experience an incredible Earth Day and today in Big Bend with this year’s stunning and rare wildflower explosion! Rainbow cactus (Echinocereus dasyacanthus) normally bloom yellow but occasionally will exhibit pink or orange coloration. These alternate shades are due to these individuals being backcrosses of a hybrid with the Claret Cup cactus

See photos at  Desert Wildflower Reports for Texas.