Delphinium hansenii |
Delphinium lineapetalum |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
Eldorado larkspur, Hansen's delphinium, Hansen's larkspur |
thinpetal larkspur |
|||||||||
Stems | (25-)40-80(-180) cm; base usually reddish, pubescent. |
(15-)30-60 cm; base usually reddish, glabrous to glaucous. |
||||||||
Leaves | blade pentagonal, 1.5-5 × 2.5-8 cm, long-pubescent, especially abaxially; ultimate lobes 0-18, width 4-20 mm (basal), 2-9 mm (cauline). |
blade round, 1-5 × 2-6 cm, glabrous; ultimate lobes 5-16, width 1-4 mm (basal), 0.5-3 mm (cauline). |
||||||||
Inflorescences | (9-)15-40(-160)-flowered, dense to open; pedicel 0.3-2.5(-6) cm, puberulent; bracteoles 1-5(-8) mm from flowers, green, sometimes white-margined, linear-lanceolate, 2-6(-8) mm, puberulent. |
(3-)9-24(-40)-flowered, pyramidal; pedicel spreading, 1-2.5 cm, glabrous or glandular-puberulent; bracteoles 4-7 mm from flowers, blue or green, linear, 1-3 mm, glabrous or glandular-puberulent. |
||||||||
Flowers | sepals violet to white, ± puberulent, lateral sepals spreading to forward pointing, 7-10(-13) × 3-6(-8) mm, spurs gently upcurved, ascending 0-30° above horizontal, (6-)9-13(-16) mm; lower petal blades elevated, ± exposing stamens, 3-7 mm, cleft 1-2(-4) mm; hairs centered, densest on inner lobes near base of cleft, white. |
sepals light blue to lavender, nearly glabrous, lateral sepals reflexed, 10-13 × 3-5 mm, spurs straight to slightly decurved, nearly horizontal to ascending ca. 30°, 11-17 mm; lower petal blades elevated, exposing stamens, 3-5 mm, clefts 0.5-2 mm; hairs centered mostly on inner lobes near base of cleft, white. |
||||||||
Fruits | 8-20 mm, 2.2-4 times longer than wide, glabrous. |
13-21 mm, 4-4.5 times longer than wide, puberulent to glabrous. |
||||||||
Seeds | echinate, appearing fuzzy to naked eye; seed coat cells with margins straight, surfaces sparsely pustulate. |
seed coat cells narrow, short, cell margins straight, surfaces smooth. |
||||||||
Delphinium hansenii |
Delphinium lineapetalum |
|||||||||
Phenology | Flowering spring. | |||||||||
Habitat | Open pine woods, dry meadows | |||||||||
Elevation | 400-1800 m (1300-5900 ft) | |||||||||
Distribution |
CA
|
WA
|
||||||||
Discussion | Subspecies 3 (3 in the flora). Although Delphinium hansenii has often been confused with D. hesperium, seeds will instantly allow identification. Seeds of Delphinium hansenii are, as far as known, unique, bearing numerous, elongate, prismlike raised structures (extensions of single cells or small groups of cells) over the entire seed coat. If seeds are absent, larger flowers, more open inflorescences (except in D. hesperium subsp. cuyamacae), and general absence of pubescence of long hairs in D. hesperium are apparent upon comparison of the two species. Separating D. hansenii from D. variegatum may also be difficult. Again, seeds leave no doubt. In addition, smaller flowers and greater number of flowers per plant of D. hansenii should serve to distinguish D. hansenii from D. variegatum. White-flowered D. hansenii has been confused with D. gypsophilum and with D. hesperium subsp. pallescens. Other than seeds, pubescence of long hairs and smaller flowers present in D. hansenii and absent in the others will distinguish them. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||||||
Key |
|
|||||||||
Source | FNA vol. 3. | FNA vol. 3. | ||||||||
Parent taxa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Echinata | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Subscaposa | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | D. hesperium var. hansenii | D. nuttallianum var. lineapetalum | ||||||||
Name authority | (Greene) Greene: Pittonia 3: 94. (1896) | Ewan: Univ. Colorado Stud., Ser. D, Phys. Sci. 2: 126. (1945) | ||||||||
Web links |