familyRanunculaceae
genusDelphinium
subsectionDelphinium subsect. Bicoloria
speciesDelphinium bicolor
subspeciesDelphinium bicolor subsp. calcicola
Delphinium bicolor subsp. calcicola
Phytologia 78: 90. 1995.
Endemic
Treatment appears in FNA Volume 3.
Revision as of 20:54, 24 September 2019 by FNA>Volume Importer
Flowers: sepals bright dark blue, lateral sepals 16-21 × 9-12 mm, spurs 15-23 mm; lower petal blades with cleft 2 mm or more; hairs usually yellow.
Phenology: Flowering late spring–early summer.
Habitat: Rocky soils in shortgrass prairie and sagebrush communities on limestone outcrops
Elevation: 1300-2100 m
Discussion
In the field, Delphinium bicolor subsp. calcicola is readily separated from D. bicolor subsp. bicolor on the basis of its brighter colored, slightly larger flowers and its edaphic preference. Delphinium bicolor subsp. calcicola usually flowers somewhat later where the two are sympatric. These differences are often not apparent from herbarium specimens. Specimens of this taxon misidentified as D. geyeri account for most reports of that species from Montana.
Selected References
None.
Lower Taxa
None.