Delphinium nuttallianumPritz. [family RANUNCULACEAE ] (stored under name); Verified by Joseph Andorfer Ewan, Isotype of Delphinium pauciflorumNutt. [family RANUNCULACEAE ] Verified by Joseph Andorfer Ewan,
Related name
Delphinium sonnei
Delphinium menziesii
Delphinium helleri
Delphinium nuttallianum
Delphinium decorum
Delphinium nelsonii
Delphinium pauciflorum
Delphinium scopulorum
Flora
Entry for Delphinium bicolor Nuttall subsp. bicolor [family RANUNCULACEAE]
Delphinium nuttallianumPritzel var. pilosum C. L. Hitchcock [family RANUNCULACEAE]
Information
Flowers: sepals dark blue to purple, lateral sepals 16-21 × 6-11 mm, spurs 13-18 mm; lower petal blades with cleft less than 2 mm; hairs usually white.
Phenology
Flowering late spring-early summer
Altitude range
600-3100 m
Distribution
not on soils derived from limestoneUSA IdahoUSA Mont.USA Nebr.USA N.Dak.USA S.Dak.USA Wyo.Canada Alta.Canada B.C.Canada Sask.
Discussion
Rydberg's Delphinium bicolor var. montanense tends to have more pubescence and larger flowers but is otherwise typical and apparently fully intergrades with D. bicolor subsp. bicolor. Often referred to as one of the low larkspurs in poisonous-plant literature, the plant is abundant on some ranges and is the cause of some livestock poisonings.
