Delphinium brachycentrum |
Delphinium lineapetalum |
|
---|---|---|
arctic larkspur, northern larkspur |
thinpetal larkspur |
|
Stems | 20-50(-80) cm; base often reddish, pubescent. |
(15-)30-60 cm; base usually reddish, glabrous to glaucous. |
Leaves | blade round to pentagonal, 1.5-6 × 3-11 cm, puberulent; ultimate lobes 5-15, width 1-7(-15) mm. |
blade round, 1-5 × 2-6 cm, glabrous; ultimate lobes 5-16, width 1-4 mm (basal), 0.5-3 mm (cauline). |
Inflorescences | 5-18-flowered; pedicel 1-4.5 cm, pubescent; bracteoles 2-7 mm from flowers, blue, linear, 5-8 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 dark blue, apex rounded, puberulent, lateral sepals forward pointing, 17-24 × 7-9 mm, spurs straight to slightly decurved, ascending 30-60° above horizontal, 15-17 mm; lower petal blades ± covering stamens, 5-7 mm, clefts 0.5-1.5 mm; hairs sparse, local, centered, mostly above 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 | 14-17 mm, 3.5-4 times longer than wide, pubescent. |
13-21 mm, 4-4.5 times longer than wide, puberulent to glabrous. |
Seeds | wing-margined; seed coat cells ± elongate, surfaces roughened. |
seed coat cells narrow, short, cell margins straight, surfaces smooth. |
Delphinium brachycentrum |
Delphinium lineapetalum |
|
Phenology | Flowering summer. | Flowering spring. |
Habitat | Well-drained tundra slopes | Open pine woods, dry meadows |
Elevation | 0-1600 m (0-5200 ft) | 400-1800 m (1300-5900 ft) |
Distribution |
AK; YT; e Asia |
WA
|
Discussion | Hybrids with Delphinium glaucum are known as D. ×nutans A. Nelson. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Exaltata | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Subscaposa |
Sibling taxa | ||
Synonyms | D. chamissonis | D. nuttallianum var. lineapetalum |
Name authority | Ledebour: Fl. Ross. 1: 60. (1841) | Ewan: Univ. Colorado Stud., Ser. D, Phys. Sci. 2: 126. (1945) |
Web links |