by Dr. F. Alice LeDuc
Delphinium – D. depauperatum, Dwarf Larkspur; D. glaucum, Tall Larkspur; D. menziesii, Menzies Larkspur; D. nuttallianum, Upland Larkspur; D. nuttallii, Nuttall’s Larkspur; D. trolliifolium, Cow-poison
Delphinium is a complex group of plants. So, if you can just recognize the plant as a delphinium, you are ok. Strictly speaking Delphiniums are perennial species and plants which are true larkspur (Consolida) are annuals. However,…
