Delphinium purpusii |
Delphinium geyeri |
|
---|---|---|
Kern County larkspur, Purpus' larkspur, rose-color larkspur, rose-flower larkspur |
Geyer's larkspur, poisonweed |
|
Stems | (30-)50-80(-120) cm; base reddish or not, nearly glabrous. |
(15-)30-60(-80) cm; base usually 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, 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. |
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. |
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. |
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, 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. |
Fruits | (11-)18-29 mm, 4-4.5 times longer than wide, glabrous. |
11-15 mm, 3-3.5 times longer than wide, sparse puberulent. |
Seeds | seed coats with small wavy ridges, cells brick-shaped, cell margins undulate, surfaces smooth. |
unwinged; seed coat cells with margins straight, surfaces ± roughened. |
2n | = 16. |
= 16. |
Delphinium purpusii |
Delphinium geyeri |
|
Phenology | Flowering spring. | Flowering late spring–early summer. |
Habitat | Talus, cliffs, on and near large boulders | Grasslands or Artemisia-Cercocarpus scrub |
Elevation | 300-1300 m (1000-4300 ft) | 1400-3000 m (4600-9800 ft) |
Distribution |
CA
|
CO; MT; NE; UT; WY
|
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.) |
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.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Subscaposa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Wislizenana |
Sibling taxa | ||
Name authority | Brandegee: Bot. Gaz. 27: 444. (1899) | Greene: Erythea 2: 189. (1894) |
Web links |