Delphinium parishii |
Delphinium treleasei |
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desert larkspur, Parish's larkspur |
glade larkspur, Trelease's larkspur |
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Stems | (17-)30-60(-100) cm; base reddish or not, glabrous to puberulent. |
(40-)60-80(-110) cm; base reddish, glabrous, glaucous. |
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Leaves | blade pentagonal, 0.7-5 × 1-8 cm, glabrous to puberulent; ultimate lobes 3-18, width 2-18 mm (basal), 0.5-8 mm (cauline). |
blade round to reniform, 0.5-8 × 2-20 cm, glabrous; ultimate lobes 3-35(-56), 5 or more extending more than 3/5 distance to petiole, width 2-6 mm (basal), 0.5-2 mm (cauline), widest at middle or in proximal 1/2. |
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Inflorescences | (6-)10-40(-74)-flowered, cylindric; pedicel ascending-spreading, (0.3-)1-2.5(-4.8) cm, glabrous to puberulent; bracteoles 2-5(-10) mm from flowers, green, lance-linear, 2-6(-16) mm, glabrous to puberulent. |
5-30(-56)-flowered; pedicel (1-)2.5-7(-11) cm, glabrous; bracteoles 1-7(-46) mm from flowers, blue or green, awl-shaped, 1.5-4(-12) mm, glabrous. |
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Flowers | sepals dark blue to white to pink, often puberulent, lateral sepals reflexed or spreading, (7-)9-13 × 2-7 mm, spurs ± decurved, ascending 20-45° above horizontal, 7-15 mm; lower petal blades ± elevated, exposing stamens, blue or white to pink (concolorous with sepals), 3-6 mm, clefts 1-3 mm; hairs mostly near base of cleft, centered or on inner lobes, white. |
sepals dark bright blue, usually retaining color upon drying, nearly glabrous, lateral sepals spreading, (10-)12-17(-20) × 4-8(-10) mm, spurs straight, ascending ca. 45°, 15-17 mm; lower petal blades ± covering stamens, 5-8 mm, clefts (1-)3-5 mm; hairs centered, densest above base of cleft, yellow. |
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Fruits | 9-21 mm, 2-4 times longer than wide, glabrous to puberulent. |
12-18(-22) mm, 3-4 times longer than wide, glabrous. |
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Seeds | seed coat cells ± brick-shaped, cell margins undulate, surfaces roughened. |
unwinged; seed coat cell surfaces smooth. |
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2n | = 16. |
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Delphinium parishii |
Delphinium treleasei |
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Phenology | Flowering late spring. | |||||||||
Habitat | Open juniper glades on calcareous substrate | |||||||||
Elevation | 250-450 m (800-1500 ft) | |||||||||
Distribution |
AZ; CA; NV; UT; nw Mexico
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AR; MO |
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Discussion | Subspecies 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Delphinium treleasei is locally abundant but extremely limited by microhabitat within its distributional range. Hybrids between Delphinium treleasei and D. carolinianum subsp. carolinianum are known. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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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 | A. Gray: Bot. Gaz. 12: 53. (1887) | Bush ex K. C. Davis: Minnesota Bot. Stud. 2: 444. (1900) | ||||||||
Web links |