Delphinium purpusii |
Delphinium stachydeum |
|
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Kern County larkspur, Purpus' larkspur, rose-color larkspur, rose-flower larkspur |
hedgenettle larkspur, Rocky Mountain larkspur, spike larkspur, Umatilla larkspur |
|
Stems | (30-)50-80(-120) cm; base reddish or not, nearly glabrous. |
(40-)70-150(-200) cm; base reddish, puberulent. |
Leaves | blade round, 1.5-6 × 2-10 cm, ± puberulent; ultimate lobes 0-5, width 5-30(-50) mm (basal), 5-20(-40) 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. |
Inflorescences | (8-)12-20(-32)-flowered, ± cylindric; pedicel ± ascending, (0.5-)1-4(-5) cm, glandular-puberulent; bracteoles 1-6 mm from flowers, green to magenta, linear, 2-4 mm, glandular-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. |
Flowers | sepals magenta to rose, nearly glabrous, lateral sepals reflexed, 10-16 × 3-7 mm, spurs straight, 30-45° above horizontal, (10-)14-19 mm; lower petal blades nearly coplanar with claws, exposing stamens, 3-4 mm, clefts 0.5-1.5 mm; hairs sparse, scattered, 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. |
Fruits | (11-)18-29 mm, 4-4.5 times longer than wide, glabrous. |
10-15 mm, 3.5-4.5 times longer than wide, puberulent. |
Seeds | seed coats with small wavy ridges, cells brick-shaped, cell margins undulate, surfaces smooth. |
wing-margined; seed coat cells with margins straight, surfaces ± roughened. |
2n | = 16. |
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Delphinium purpusii |
Delphinium stachydeum |
|
Phenology | Flowering spring. | Flowering summer. |
Habitat | Talus, cliffs, on and near large boulders | Swales in Artemisia scrub |
Elevation | 300-1300 m (1000-4300 ft) | 1300-3000 m (4300-9800 ft) |
Distribution |
CA
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CA; ID; NV; OR; WA
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Discussion | Of conservation concern. Delphinium purpusii is not likely to be confused with any other Delphinium in North America. Hybrids with Delphinium hansenii subsp. kernense are known to occur. (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.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Subscaposa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Wislizenana |
Sibling taxa | ||
Synonyms | D. scopulorum var. stachydeum, D. confertiflorum, D. umatillense | |
Name authority | Brandegee: Bot. Gaz. 27: 444. (1899) | (A. Gray) Tidestrom: Proc. Biol. Soc. Wash. 27: 61. (1914) |
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