This episode is a real cliffhanger because we are delving into the wild world of rock daisies in the tribe Perityleae. These obscure composites live a perilous life clinging to scattered vertical rock cliffs throughout parts of southwestern North America. Joining us to talk about the rock daisies is UC Berkeley PhD student, Isaac Marck. As you will hear, Isaac and his colleagues are uncovering amazing information about these plants that paint a fascinating picture about evolution and conservation in dry climates. This episode was produced in part by Griff, Philip, Paul, Matthew, Clark, Bobby, Kate, Steven, Brittney, McMansion Hell, Joey, Catherine, Brandon, Hall, Vegreville Creek and Wetlands Fund, Kevin, Oliver, John, Johansson, Christina, Jared, Hannah, Katy Pye, Brandon, Gwen, Carly, Stephen, Botanical Tours, Moonwort Studios, Lisa, Liba, Lucas, Mohsin Kazmi Takes Pictures, doeg, Clifton, Stephanie, Benjamin, Eli, Rachael, Anthony, Plant By Design, Philip, Brent, Ron, Tim, Homestead Brooklyn, Brodie, Kevin, Sophia, Brian, Mark, Rens, Bendix, Irene, Holly, Caitlin, Manuel, Jennifer, Sara, and Margie.