Delphinium umbraculorum |
Delphinium hutchinsoniae |
|
---|---|---|
umbrella larkspur |
Hutchinson's delphinium, Hutchinson's larkspur, Monterey larkspur |
|
Stems | 40-70(-90) cm; base often reddish, glabrous or puberulent. |
(25-)50-80(-100) cm; base reddish, not longitudinally ridged, variably puberulent. |
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, 1-6 × 1.5-10 cm, puberulent; ultimate lobes 3-17, width 4-16(-25) mm (basal), 1-8(-19) mm (cauline). |
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-)7-20(-31)-flowered, open; pedicel 1-4(-6) cm, puberulent; bracteoles (2-)8-12 mm from flowers, green, linear, 3-6(-9) 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 bluish purple, puberulent, lateral sepals spreading, (12-)14-19(-24) × 7-12(-15) mm, spurs ascending, decurved apically, 11-19 mm; lower petal blades slightly elevated, mostly covering stamens, 5-10 mm, cleft 2-3 mm; hairs sparse, mostly on inner lobes, absent on margins, white. |
Fruits | 9-16(-19) mm, 2.5-3(-4) times longer than wide, puberulent. |
9-21 mm, 2.5-4.2 times longer than wide, sparsely puberulent. |
Seeds | seed coat cells brick-shaped, cell margins straight, surfaces smooth. |
not echinate, ± smooth to naked eye; seed coat cells with margins ± undulate, surfaces smooth. |
2n | = 16. |
|
Delphinium umbraculorum |
Delphinium hutchinsoniae |
|
Phenology | Flowering late spring–early summer. | Flowering spring. |
Habitat | Slopes in oak forests | Coastal chaparral, clearings in coniferous woods |
Elevation | 400-1600 m (1300-5200 ft) | 0-400 m (0-1300 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.) |
Of conservation concern. Delphinium hutchinsoniae is known from only a few populations near Monterey and south to the Big Sur region. Hybrids have been produced between D. hutchinsoniae and D. cardinale grown in a common garden. Hybrids also occur with D. parryi subsp. maritimum. Delphinium hutchinsoniae is similar, and probably closely related, to D. variegatum. The two may be distinguished by the decurved spur of D. hutchinsoniae; the spur of D. variegatum is normally straight (or decurved nearer apex). Delphinium hutchinsoniae lacks marginal hairs on lower petals; such hairs are present in D. variegatum. The two species are also geographically separated. (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. Echinata |
Sibling taxa | ||
Name authority | H. F. Lewis & Epling: Brittonia 8: 19. (1954) | Ewan: Bull. Torrey Bot. Club 78: 379. (1951) |
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