Delphinium trolliifolium |
Delphinium glareosum |
|
---|---|---|
Columbian larkspur, cow-poison, poison delphinium, poison larkspur |
Olympic larkspur, Olympic Mountain larkspur, rockslide larkspur |
|
Stems | (40-)60-120(-180) cm; base usually reddish, glabrous to puberulent. |
20-40 cm; base reddish or not, glabrous, glaucous. |
Leaves | blade ± pentagonal, 4-8 × 7-16 cm, margins ± incised, nearly glabrous; ultimate lobes 0-9, width 15-30 mm (basal), 5-20 mm (cauline), widest at middle or in proximal 1/2. |
blade round, 2-4 × 3-7 cm, not succulent, glabrous; ultimate lobes 7-15, width 3-10 mm (basal), 2-7 mm (cauline). |
Inflorescences | (5-)14-40(-75)-flowered, ± open, at least 2 times longer than wide; pedicel 1-4(-9) cm, puberulent to glabrous; bracteoles (2-)6-12 mm from flowers, green, linear, 5-9(-14) mm, puberulent. |
5-12-flowered; pedicel 1-5(-10) cm, nearly glabrous to glandular-puberulent; bracteoles 2-10(-20) mm from flowers, green, linear, 3-8 mm, puberulent. |
Flowers | sepals dark blue, glabrous, lateral sepals spreading, (8-)14-21 × 5-9 mm, spurs straight or downcurved at apex, within 20° of horizontal, (10-)16-23 mm; lower petal blades covering stamens, 5-10 mm, clefts 1.5-3 mm; hairs sparse, mostly near junction of blade and claw, centered or on inner lobes, well dispersed, yellow. |
sepals dark blue, nearly glabrous, lateral sepals spreading, 14-22 × 6-10 mm, spurs ± straight, orientation varies from 30° above to 30° below horizontal, 16-20 mm; lower petal blades slightly elevated, ± covering stamens, 6-9 mm, clefts 2-4 mm; hairs local, densest on inner lobes near base of cleft, white to light yellow. |
Fruits | (15-)23-34 mm, 3.8-5.5 times longer than wide, glabrous. |
12-17 mm, 2.5-3 times longer than wide, glabrous. |
Seeds | unwinged; seed coats smooth. |
± wing-margined; seed coat cells with surfaces smooth. |
2n | = 16. |
|
Delphinium trolliifolium |
Delphinium glareosum |
|
Phenology | Flowering spring. | Flowering summer. |
Habitat | Oak woods, coastal chaparral, wet woodlands | Steep rocky subalpine to alpine slopes |
Elevation | 30-1100 m (100-3600 ft) | 1500-2800 m (4900-9200 ft) |
Distribution |
CA; OR
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OR; WA; BC
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Discussion | Delphinium trolliifolium occurs in the northern Coast Range of California, the Columbia River Valley to just east of Mt. Hood, and the Willamette Valley of Oregon upstream to Lane County. California plants differ somewhat from Oregon plants in pubescence patterns and habitat preferences. Further study may show that two entities are involved here. Hybrids between Delphinium trolliifolium and D. decorum, D. menziesii subsp. pallidum (D. ×pavonaceum Ewan, Peacock larkspur), D. nudicaule, D. nuttallianum, and D. nuttallii are known. Delphinium trolliifolium is likely to be confused only with D. bakeri. Refer to discussion under that species for differences. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
See discussion under Delphinium bicolor. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Grumosa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Bicoloria |
Sibling taxa | ||
Synonyms | D. caprorum | |
Name authority | A. Gray: Proc. Amer. Acad. Arts 8: 375. (1872) | Greene: Pittonia 3: 257. (1898) |
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