Mike Read / Rocky mountain iris (Iris missouriensis) Lamar Valley, Yellowstone National Park, Wyoming June

Marie Read / Western Blue Flag / Rocky Mountain Iris (Iris missouriensis) flowers, Lee Vining Canyon, California, USA

Shattil & Rozinski / Broad-tailed hummingbird (Selasphorus platycercus) hovering over Rocky Mountain Irises (Iris missouriensis) flowering in pasture, Wyoming, USA, North America

Shattil & Rozinski / Broad-tailed hummingbird (Selasphorus platycercus)hovering over Rocky Mountain Irises (Iris missouriensis) flowering in pasture, Wyoming, USA, North America

Shattil & Rozinski / Rocky Mountain Irises (Iris missouriensis) flowering in pasture, below rock outcrop, Wyoming, USA, North America

Hermann Brehm / Rocky mountain iris flowering in Yellowstone NP, Wyoming, USA