Delphinium parishii |
Delphinium geyeri |
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desert larkspur, Parish's larkspur |
Geyer's larkspur, poisonweed |
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Stems | (17-)30-60(-100) cm; base reddish or not, glabrous to puberulent. |
(15-)30-60(-80) cm; base usually reddish, puberulent. |
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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 light green, ± round, 1-5 × 1-6 cm, densely pubescent; ultimate lobes 7-20, width 2-5 mm (basal), 2-4 mm (cauline), apex gradually tapering to point; veins obscure. |
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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. |
6-30(-60)-flowered, ± open, cylindric; pedicel ascending to spreading, 1-3(-4) cm, puberulent; bracteoles 1-3 mm from flowers, green, lanceolate, 3-6 mm, puberulent. |
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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 bright blue, puberulent, lateral sepals spreading, 10-18 × 4-8 mm, spurs straight to slightly downcurved, ascending 0-30°, 11-16 mm; lower petal blades slightly elevated, ± exposing stamens, 4-8 mm, clefts 0.5-2 mm; hairs centered, densest on inner lobes near base of cleft, white to light yellow. |
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Fruits | 9-21 mm, 2-4 times longer than wide, glabrous to puberulent. |
11-15 mm, 3-3.5 times longer than wide, sparse puberulent. |
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Seeds | seed coat cells ± brick-shaped, cell margins undulate, surfaces roughened. |
unwinged; seed coat cells with margins straight, surfaces ± roughened. |
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2n | = 16. |
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Delphinium parishii |
Delphinium geyeri |
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Phenology | Flowering late spring–early summer. | |||||||||
Habitat | Grasslands or Artemisia-Cercocarpus scrub | |||||||||
Elevation | 1400-3000 m (4600-9800 ft) | |||||||||
Distribution |
AZ; CA; NV; UT; nw Mexico
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CO; MT; NE; UT; WY
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Discussion | Subspecies 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Apparently closely related to Delphinium stachydeum, D. geyeri is generally smaller, earlier flowering, with more finely dissected leaves and a more eastern geographic distribution. (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. Wislizenana | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Name authority | A. Gray: Bot. Gaz. 12: 53. (1887) | Greene: Erythea 2: 189. (1894) | ||||||||
Web links |