Thinpetal larkspur (Delphinium lineapetalum)
Same genus
- Alabama larkspur (Delphinium alabamicum)
- Colorado larkspur (Delphinium alpestre)
- Anderson's larkspur (Delphinium andersonii)
- Chiricahua Mountain larkspur (Delphinium andesicola)
- Tracy's larkspur (Delphinium antoninum)
- Baker's delphinium (Delphinium bakeri)
- Subalpine larkspur (Delphinium barbeyi)
- Little larkspur (Delphinium bicolor)