Delphinium umbraculorum |
Delphinium brachycentrum |
|
---|---|---|
umbrella larkspur |
arctic larkspur, northern larkspur |
|
Stems | 40-70(-90) cm; base often reddish, glabrous or puberulent. |
20-50(-80) cm; base often reddish, pubescent. |
Leaves | blade round to pentagonal, 1.5-4 × 2-6 cm, nearly glabrous; ultimate lobes 3-13, width 3-20 mm (basal), 1-8 mm (cauline). |
blade round to pentagonal, 1.5-6 × 3-11 cm, puberulent; ultimate lobes 5-15, width 1-7(-15) mm. |
Inflorescences | (5-)10-25(-45)-flowered, open, narrowly pyramidal; pedicel 0.5-3(-7) cm, glabrous to puberulent; bracteoles 3-7 mm from flowers, green, linear, 3-6 mm, puberulent. |
5-18-flowered; pedicel 1-4.5 cm, pubescent; bracteoles 2-7 mm from flowers, blue, linear, 5-8 mm, puberulent. |
Flowers | sepals dark blue, puberulent, lateral sepals spreading, 9-16 × 4-7 mm, spurs gently upcurved, ascending 30-45° above horizontal, 8-14 mm; lower petal blades elevated, exposing stamens, 3.5-6 mm, clefts 0.5-1.5 mm; hairs densest near junction of blade and claw above base of cleft, centered or on inner lobes, white. |
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. |
Fruits | 9-16(-19) mm, 2.5-3(-4) times longer than wide, puberulent. |
14-17 mm, 3.5-4 times longer than wide, pubescent. |
Seeds | seed coat cells brick-shaped, cell margins straight, surfaces smooth. |
wing-margined; seed coat cells ± elongate, surfaces roughened. |
2n | = 16. |
|
Delphinium umbraculorum |
Delphinium brachycentrum |
|
Phenology | Flowering late spring–early summer. | Flowering summer. |
Habitat | Slopes in oak forests | Well-drained tundra slopes |
Elevation | 400-1600 m (1300-5200 ft) | 0-1600 m (0-5200 ft) |
Distribution |
CA
|
AK; YT; e Asia |
Discussion | Delphinium umbraculorum is most often confused with D. patens subsp. hepaticoideum; refer to discussion of that taxon for distinguishing features. Hybrids occur with D. parryi and D. patens subsp. montanum. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Hybrids with Delphinium glaucum are known as D. ×nutans A. Nelson. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Subscaposa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Exaltata |
Sibling taxa | ||
Synonyms | D. chamissonis | |
Name authority | H. F. Lewis & Epling: Brittonia 8: 19. (1954) | Ledebour: Fl. Ross. 1: 60. (1841) |
Web links |