Delphinium umbraculorum |
Delphinium decorum |
|||||
---|---|---|---|---|---|---|
umbrella larkspur |
coast larkspur, coastal larkspur, larkspur, low larkspur, yellowtinge larkspur |
|||||
Stems | 40-70(-90) cm; base often reddish, glabrous or puberulent. |
5-25(-42) cm; base reddish or not, at least two proximal internodes long-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 deltate to pentagonal, 1-2.5 × 1.5-4.5 cm, ± puberulent; ultimate lobes 3-15, width 3-17 mm (basal), 1-8 mm (cauline), widest at middle or in proximal 1/2. |
||||
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. |
2-10(-20)-flowered; pedicel 1-4(-6) cm, puberulent to glabrous; bracteoles (3-)7-11(-21) mm from flowers, green to blue, linear-lanceolate, 6-9(-12) 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 bluish purple (somewhat faded on drying), puberulent, lateral sepals spreading, (11-)15-20(-24) × 6-11(-15) mm, spur straight, 0-30° above horizontal, 13-20 mm; lower petal blades ± covering stamens, 6-11 mm, cleft 2-4 mm; hairs on entire surface, densest on inner lobes, yellow or white. |
||||
Fruits | 9-16(-19) mm, 2.5-3(-4) times longer than wide, puberulent. |
9-20 mm, 3-4.5 times longer than wide, glabrous to puberulent. |
||||
Seeds | seed coat cells brick-shaped, cell margins straight, surfaces smooth. |
wing-margined; seed coat cells ± aggregate in small wavy ridges, cell surfaces ± roughened, without swollen, blunt hairs. |
||||
2n | = 16. |
|||||
Delphinium umbraculorum |
Delphinium decorum |
|||||
Phenology | Flowering late spring–early summer. | |||||
Habitat | Slopes in oak forests | |||||
Elevation | 400-1600 m (1300-5200 ft) | |||||
Distribution |
CA
|
CA
|
||||
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.) |
Subspecies 2 (2 in the flora). Delphinium decorum and D. menziesii have been confused. Delphinium menziesii usually has darker, colorfast (nonfading) sepals with less lavender, and a more northern distribution than D. decorum. It also has more finely dissected leaves than D. decorum subsp. decorum. Often confused with Delphinium patens, D. decorum is sometimes circumscribed to include that species. The spreading, fading, blue-purple sepals, pubescent proximal portion of stems, and large lower petal blade of D. decorum, compared to the reflexed, colorfast, bluer sepals, proximally glabrous stems, and smaller lower petal blades of D. patens, adequately distinguish the two taxa. (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. Subscaposa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Grumosa | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | H. F. Lewis & Epling: Brittonia 8: 19. (1954) | Fischer & C. A. Meyer: Ind. Sem. Hort. Petrop. 3: 650. (1837) | ||||
Web links |