Delphinium patens subsp. montanum
Bull. Torrey Bot. Club 69: 147. 1942.
Leaves: basal leaves usually absent at anthesis; basal and proximal cauline leaves usually cleft more than 4/5 radius of blade. Leaf blade: ultimate lobes 5-10, width less than 10 mm. Inflorescences: pedicel generally glandular-puberulent. Flowers: lateral sepals 7-11 mm, spurs 8-14 mm; lower petal blades 3-6 mm; hairs symmetrically distributed.
Phenology: Flowering late spring–early summer.
Habitat: Open coniferous forest
Elevation: 1500-2800 m
Discussion
Delphinium patens subsp. montanum is usually found on drier, leeward sides of mountain ranges; subsp. hepaticoideum is found on wetter, windward sides of many of the same mountain ranges.
Delphinium patens subsp. montanum is likely to be confused with D. gracilentum or D. nuttallianum; see discussion under those species for distinguishing features.
Hybrids with D. umbraculorum are known.
Selected References
None.