Delphinium umbraculorum |
Delphinium glaucescens |
|
---|---|---|
umbrella larkspur |
glaucous larkspur, glaucus larkspur, smooth larkspur |
|
Stems | 40-70(-90) cm; base often reddish, glabrous or puberulent. |
35-70(-100) cm; base ± reddish, glabrous, glaucous. |
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 pentagonal to round, 2-9 × 3-14 cm, margins seldom laciniate, nearly glabrous; ultimate lobes 5-17, width 2-8 mm, tips abruptly tapered to mucronate apex; midcauline leaf lobes more than 3 times longer than wide. |
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. |
10-25-flowered; pedicel 0.5-1.5 cm, puberulent to glabrous; bracteoles 2-20 mm from flowers, green, linear, 3-8 mm, nearly glabrous. |
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, nearly glabrous, lateral sepals spreading to reflexed, 8-12 × 3-4 mm, spurs straight, ascending 40-90°, 9-13 mm; lower petal blades ± covering stamens, 3-5 mm, clefts 1-2 mm; hairs centered, mostly near base of cleft, white. |
Fruits | 9-16(-19) mm, 2.5-3(-4) times longer than wide, puberulent. |
7-13 mm, 3.4-4 times longer than wide, puberulent. |
Seeds | seed coat cells brick-shaped, cell margins straight, surfaces smooth. |
± wing-margined; seed coat cells narrow but short, surfaces smooth. |
2n | = 16. |
|
Delphinium umbraculorum |
Delphinium glaucescens |
|
Phenology | Flowering late spring–early summer. | Flowering summer. |
Habitat | Slopes in oak forests | Rocky slopes in subalpine coniferous woods |
Elevation | 400-1600 m (1300-5200 ft) | 2000-4000 m (6600-13100 ft) |
Distribution |
CA
|
ID; MT; WY
|
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. (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 | ||
Name authority | H. F. Lewis & Epling: Brittonia 8: 19. (1954) | Rydberg: Mem. New York Bot. Gard. 1: 155. (1900) |
Web links |