Delphinium xantholeucum |
Delphinium parishii |
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yellow-white larkspur |
desert larkspur, Parish's larkspur |
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Stems | 40-60(-100) cm; base often reddish, glabrous, ± glaucous. |
(17-)30-60(-100) cm; base reddish or not, glabrous to puberulent. |
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Leaves | blade round, 2-6 × 4-10 cm, nearly glabrous; ultimate lobes 3-15, width 3-8 mm (basal), 1-5 mm (cauline). |
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). |
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Inflorescences | 10-20(-60)-flowered, narrowly pyramidal; pedicel spreading, yellowish, 1.5-3 cm, ± glandular-puberulent; bracteoles 6-12 mm from flowers, green to light brown, linear to lanceolate, 4-7 mm, nearly glabrous. |
(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. |
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Flowers | sepals yellow, glabrous, lateral sepals reflexed, 9-12 × 3-5 mm, spurs straight, ascending ca. 45° above horizontal, 11-15 mm; lower petal blades elevated, exposing stamens, 3-5 mm, clefts 1-2 mm; hairs centered mostly on inner lobes near base of cleft, white. |
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. |
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Fruits | 15-22 mm, 3-4 times longer than wide, glabrous to glandular-puberulent. |
9-21 mm, 2-4 times longer than wide, glabrous to puberulent. |
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Seeds | seed coat cells narrow, short, cell margins straight, surfaces smooth. |
seed coat cells ± brick-shaped, cell margins undulate, surfaces roughened. |
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2n | = 16. |
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Delphinium xantholeucum |
Delphinium parishii |
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Phenology | Flowering spring. | |||||||||
Habitat | Slopes in open yellow pine forests, grasslands, sage scrub | |||||||||
Elevation | 150-600 m (500-2000 ft) | |||||||||
Distribution |
WA
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AZ; CA; NV; UT; nw Mexico
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Discussion | Of conservation concern. Delphinium xantholeucum is very local; much of the habitat of this species has been converted to orchards. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 3 (3 in the flora). (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. Subscaposa | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Name authority | Piper: Contr. U.S. Natl. Herb. 11: 280. (1906) | A. Gray: Bot. Gaz. 12: 53. (1887) | ||||||||
Web links |