Christmas Cactus Mammillaria haageana Sun Cups Navajo Loop Trail Bryce Canyon Morning West Rim Trail Angel's Landing Spearfish Creek Ice Climbing Dahlia Dahlia Kolob Reservoir Road Tabernacle Dome Mammillaria bocasana Hedgehog Cactus Heart of an Iris Heart of an Iris Clear Lake Home Hurricane Ridge Hurricane Ridge Iris Iris Thelocactus setispinus Acanthocalycium spiniflorum Bryce Canyon National Park Bryce Canyon National Park Zion National Park, Observation Point Trail Zion National Park, Observation Point Trail Coral Pink Sand Dunes State Park, Utah Coral Pink Sand Dunes Epiphyllum Epiphyllum Yosemite Evening Yosemite Morning Upper Yosemite Falls Bridalveil Falls Nootka Lupine Bog Bunchberry Yukon Saxifrage Yellow Monkey-flower Muskeg Tongass National Forest Half Dome Half Dome