Delphinium lineapetalum |
Delphinium bakeri |
|
---|---|---|
thinpetal larkspur |
Baker's delphinium, Baker's larkspur |
|
Stems | (15-)30-60 cm; base usually reddish, glabrous to glaucous. |
(45-)60-85(-100) cm; base reddish, glabrous. |
Leaves | blade round, 1-5 × 2-6 cm, glabrous; ultimate lobes 5-16, width 1-4 mm (basal), 0.5-3 mm (cauline). |
blade pentagonal to round, 1-6 × 1.5-8 cm, margins crenate, glabrous; ultimate lobes 3-5, width 2-5 mm (basal), 5-30 mm (cauline), widest at middle or in proximal 1/2. |
Inflorescences | (3-)9-24(-40)-flowered, pyramidal; pedicel spreading, 1-2.5 cm, glabrous or glandular-puberulent; bracteoles 4-7 mm from flowers, blue or green, linear, 1-3 mm, glabrous or glandular-puberulent. |
8-23-flowered, at least 2 times longer than wide; pedicel 1-6(-9) cm, glandular-puberulent; bracteoles 4-6 mm from flowers, green to blue, lance-linear, 5-8(-13) mm, glabrous to glandular-puberulent. |
Flowers | sepals light blue to lavender, nearly glabrous, lateral sepals reflexed, 10-13 × 3-5 mm, spurs straight to slightly decurved, nearly horizontal to ascending ca. 30°, 11-17 mm; lower petal blades elevated, exposing stamens, 3-5 mm, clefts 0.5-2 mm; hairs centered mostly on inner lobes near base of cleft, white. |
sepals dark bluish purple, nearly glabrous, lateral sepals spreading, 9-11 × 4-5 mm, spur apex decurved, ± horizontal, 9-13 mm; lower petal blades ± covering stamens, 5-7 mm, clefts 2-3 mm; hairs sparse, mostly near base of cleft, centered or on inner lobes, white. |
Fruits | 13-21 mm, 4-4.5 times longer than wide, puberulent to glabrous. |
18-20 mm, 3.5-4 times longer than wide, glabrous. |
Seeds | seed coat cells narrow, short, cell margins straight, surfaces smooth. |
unwinged; seed coats smooth. |
Delphinium lineapetalum |
Delphinium bakeri |
|
Phenology | Flowering spring. | Flowering spring. |
Habitat | Open pine woods, dry meadows | Brushlands and coastal chaparral |
Elevation | 400-1800 m (1300-5900 ft) | 100-300 m (300-1000 ft) |
Distribution |
WA
|
CA |
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Delphinium bakeri is possibly extinct in the wild because of cultivation and sheep grazing in the small area where it grows. It is known from only two localities and has not been collected since 1960. Plants have been grown at Strybing Arboretum, Golden Gate Park, San Francisco. Although their geographic ranges are distinct, D. bakeri is most similar to, and probably closely related to, D. trolliifolium. The former has more rounded incisions on the leaves than the latter, and the pedicel of D. bakeri are consistently glandular. Glandular pedicel appear only occasionally in D. trolliifolium. (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. Grumosa |
Sibling taxa | ||
Synonyms | D. nuttallianum var. lineapetalum | |
Name authority | Ewan: Univ. Colorado Stud., Ser. D, Phys. Sci. 2: 126. (1945) | Ewan: Bull. Torrey Bot. Club 69: 144. (1942) |
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