| References |
Nelson, Ruth Ashton Plants of Zion National Park 1976. Zion Natural History Association, Springdale, Utah. Page 102 (as Colorado columbine)
Spellenberg, Richard National Audobon Society Field Guide to North American Wildflowers, Western Region 1979, 1994. Chanticleer Press / Alfred A Knopf, New York, New York. Page 705 |