Aquilegia chrysantha var. chrysantha
Aquilegia chrysantha A. Gray var. chrysantha
Columbines are members of the buttercup family. There are several yellow varieties that are native to a few southwestern states. There is some disagreement as to their common names, so we will have to rely on the scientific names:
Identification: The spurs on the back of each flower are unique in shape. Flowers are about 2-3" (5-7.6 cm) in length and plants are 24-36" (60-91 cm) in height. They may be bright or pale yellow. Leaves are smooth and hairless. They prefer moist areas and medium sunlight, and are commonly found in canyons, like this one in the Sedona area of Arizona.
Aquilegia chrysantha var. chaplinei has long spurs like longspur columbines, but it is rare, found only in some remote canyons in New Mexico.
Aquilegia chrysantha var. hinckleyana looks most like A. chrysantha var. chrysantha, but is somewhat paler in color, and is found only in Texas.
Aquilegia chrysantha var. rydbergii has somewhat shorter spurs, and is found in New Mexico and Texas.
Aquilegia flavescens lacks the prominent spurs, and the flowers tip downward.
Aquilegia longissima have very long spurs.
It is common to see intermediate coloration as a result of natural hybridization, like this from Zion National Park:
Many cultivated varieties of these beautiful flowers are available now.
Edibility: Poisonous. I found conflicting information about edibility of columbines. The seeds and roots are highly poisonous, and the leaves of many other members of the buttercup family are poisonous. But one source says flowers of Aquilegia flavescens are sweet-tasting and edible, and can be added to salads. Another source also says the flowers are safe in small quantities. Better to be safe than sorry though—I’m not putting them on my salad.
Aquilegia chrysantha var. chrysantha at the U.S. Forest Service Celebrating Wildflowers site
Aquilegia chrysantha var. chrysantha on the USDA Plants Database
Aquilegia chrysantha var. chrysantha on Wikipedia
Aquilegia chrysantha var. chrysantha description by Thomas H. Kent, last updated 16 Aug 2013.