Delphinium uliginosum |
Delphinium antoninum |
|
---|---|---|
swamp larkspur |
Anthony Peak larkspur, Tracy's larkspur |
|
Stems | 10-30(-70) cm; base reddish or not, nearly glabrous. |
(7-)15-30(-60) cm; base reddish, glabrous to puberulent. |
Leaves | blade obdeltoid, apically several parted, 1-8 × 1-7 cm, ± fleshy, glabrous; ultimate lobes 0-3, width 3-20 mm (cauline only); margins of basal leaf, measured less than 1 cm from blade base, demarcating less than 90° of arc when leaf laid flat. |
blade round, 0.8-4 × 1.2-8 cm, ± succulent, nearly glabrous; ultimate lobes 3-15, width 1-8 mm (basal), 1-4 mm (cauline). |
Inflorescences | 5-20(-48)-flowered, ± open; pedicel 0.3-3(-10) cm, glabrous to puberulent; bracteoles 2-3(-5) mm from flowers, green to blue, lanceolate-linear, 3-4(-7) mm, puberulent. |
3-25-flowered; pedicel (0.6-)1.2-3.2 cm, usually puberulent; bracteoles 4-6 mm from flowers, green, linear, 3-5 mm, puberulent. |
Flowers | sepals dark blue, nearly glabrous, lateral sepals spreading, 9-15 × 5-8 mm, spurs usually upcurved, ascending 30-45° above horizontal, 10-14 mm; lower petal blades slightly elevated, ± exposing stamens, 4-5 mm, clefts 2-3 mm; hairs centered, densest on inner lobe above base of cleft, also on margins, white. |
sepals dark blue to white, nearly glabrous, lateral sepals spreading to reflexed, 11-13 × 4-6 mm, spurs straight to gently decurved, within 30° above or below horizontal, 12-16 mm; lower petal blades elevated, exposing stamens, 3-7 mm, clefts 1.5-3 mm; hairs centered, mostly on inner lobes above base of cleft, white. |
Fruits | 10-18 mm, 4.1-4.5 times longer than wide, puberulent. |
14-22 mm, 3.5-4 times longer than wide, puberulent. |
Seeds | seed coat cells with surfaces bumpy or wavy. |
unwinged; seed coat cells with surfaces smooth. |
2n | = 16. |
|
Delphinium uliginosum |
Delphinium antoninum |
|
Phenology | Flowering late spring–early summer. | Flowering late spring–early summer. |
Habitat | Serpentine streamsides, chaparral, grassland | Uncommon on moist talus slopes |
Elevation | 400-600 m (1300-2000 ft) | 1100-2700 m (3600-8900 ft) |
Distribution |
CA
|
CA |
Discussion | Although some populations are large, Delphinium uliginosum is very local. Hybrids with D. hesperium subsp. pallescens have been seen. Delphinium uliginosum is a very distinctive species, not likely to be confused with any other. The fan-shaped, slightly dissected leaves are apparently unique in the genus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Delphinium antoninum hybridizes with D. decorum subsp. tracyi and with D. nudicaule. Most often confused with D. decorum subsp. tracyi, it is separable on the basis of its longer root, usually reflexed sepals, and typically colorfast flowers. It also may be confused with D. andersonii; 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. Depauperata | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Bicoloria |
Sibling taxa | ||
Name authority | Curran: Proc. Calif. Acad. Sci. 1: 151. (1885) | Eastwood: Leafl. W. Bot. 3: 126. (1942) |
Web links |