Delphinium trolliifolium |
Delphinium brachycentrum |
|
---|---|---|
Columbian larkspur, cow-poison, poison delphinium, poison larkspur |
arctic larkspur, northern larkspur |
|
Stems | (40-)60-120(-180) cm; base usually reddish, glabrous to puberulent. |
20-50(-80) cm; base often reddish, pubescent. |
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 to pentagonal, 1.5-6 × 3-11 cm, puberulent; ultimate lobes 5-15, width 1-7(-15) mm. |
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. |
5-18-flowered; pedicel 1-4.5 cm, pubescent; bracteoles 2-7 mm from flowers, blue, linear, 5-8 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, apex rounded, puberulent, lateral sepals forward pointing, 17-24 × 7-9 mm, spurs straight to slightly decurved, ascending 30-60° above horizontal, 15-17 mm; lower petal blades ± covering stamens, 5-7 mm, clefts 0.5-1.5 mm; hairs sparse, local, centered, mostly above base of cleft, white. |
Fruits | (15-)23-34 mm, 3.8-5.5 times longer than wide, glabrous. |
14-17 mm, 3.5-4 times longer than wide, pubescent. |
Seeds | unwinged; seed coats smooth. |
wing-margined; seed coat cells ± elongate, surfaces roughened. |
2n | = 16. |
|
Delphinium trolliifolium |
Delphinium brachycentrum |
|
Phenology | Flowering spring. | Flowering summer. |
Habitat | Oak woods, coastal chaparral, wet woodlands | Well-drained tundra slopes |
Elevation | 30-1100 m (100-3600 ft) | 0-1600 m (0-5200 ft) |
Distribution |
CA; OR
|
AK; YT; e Asia |
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.) |
Hybrids with Delphinium glaucum are known as D. ×nutans A. Nelson. (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. Exaltata |
Sibling taxa | ||
Synonyms | D. chamissonis | |
Name authority | A. Gray: Proc. Amer. Acad. Arts 8: 375. (1872) | Ledebour: Fl. Ross. 1: 60. (1841) |
Web links |