Delphinium parishii |
Delphinium stachydeum |
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desert larkspur, Parish's larkspur |
hedgenettle larkspur, Rocky Mountain larkspur, spike larkspur, Umatilla larkspur |
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Stems | (17-)30-60(-100) cm; base reddish or not, glabrous to puberulent. |
(40-)70-150(-200) cm; base 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, 2-8 × 3.5-11 cm, sparsely pubescent; ultimate lobes 7-19, width 1-8 mm, apex 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. |
(14-)30-60(-102)-flowered, dense, cylindric; pedicel spreading, 0.8-2(-3) cm, puberulent; bracteoles 1-4 mm from flowers, green, linear, 2-7(-10) 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, 9-13 × 4-7 mm, spurs straight, within 30° above or below horizontal, 11-17 mm; lower petal blades ± covering stamens, 4-8 mm, clefts 0.5-2 mm; hairs sparse, centered, mostly near junction of blade and claw above base of cleft, white. |
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Fruits | 9-21 mm, 2-4 times longer than wide, glabrous to puberulent. |
10-15 mm, 3.5-4.5 times longer than wide, puberulent. |
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Seeds | seed coat cells ± brick-shaped, cell margins undulate, surfaces roughened. |
wing-margined; seed coat cells with margins straight, surfaces ± roughened. |
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Delphinium parishii |
Delphinium stachydeum |
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Phenology | Flowering summer. | |||||||||
Habitat | Swales in Artemisia scrub | |||||||||
Elevation | 1300-3000 m (4300-9800 ft) | |||||||||
Distribution |
AZ; CA; NV; UT; nw Mexico
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CA; ID; NV; OR; WA
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Discussion | Subspecies 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Populations of Delphinium stachydeum are widely scattered in isolated mountain ranges surrounded by desert or grassland. The species has been reported (visual sightings) from northwestern Utah; no specimens have been seen from there. Hybrids between D. stachydeum and D. glaucum have been reported. Although D. stachydeum has been seen flowering within 30 m of flowering D. depauperatum, no hybrids have been observed. Delphinium stachydeum may possibly be confused with D. geyeri, from which it may be distinguished by its usually greater plant size, less pubescent foliage, and later flowering date. Delphinium stachydeum also may be confused with D. glaucum; see discussion under that species. (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 | ||||||||||
Synonyms | D. scopulorum var. stachydeum, D. confertiflorum, D. umatillense | |||||||||
Name authority | A. Gray: Bot. Gaz. 12: 53. (1887) | (A. Gray) Tidestrom: Proc. Biol. Soc. Wash. 27: 61. (1914) | ||||||||
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