Delphinium uliginosum |
Delphinium newtonianum |
|
---|---|---|
swamp larkspur |
newton's larkspur, Ozark larkspur |
|
Stems | 10-30(-70) cm; base reddish or not, nearly glabrous. |
40-90 cm; base often reddish, 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 to pentagonal, 4-7 × 5-15 cm, nearly glabrous; ultimate lobes 3-7, width 8-20 mm (basal), 5-15 mm (cauline), widest at middle or in proximal 1/2. |
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. |
8-20(-40)-flowered, as wide as long or nearly so; pedicel 1-4(-6) cm, pubescent; bracteoles 6-15 mm from flowers, green, linear, 1.5-5 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 to light blue, rarely white, glabrous, lateral sepals spreading, 12-14 × 6-7 mm, spurs straight to decurved, within 30° of horizontal, 10-15 mm; lower petal blades slightly elevated, ± exposing stamens, 4-5 mm, clefts 2-3 mm; hairs mostly centered near base of cleft, yellow. |
Fruits | 10-18 mm, 4.1-4.5 times longer than wide, puberulent. |
8-12 mm, 3-3.5 times longer than wide, nearly glabrous. |
Seeds | seed coat cells with surfaces bumpy or wavy. |
unwinged; surface of each seed coat cell with swollen, blunt, hairlike structures, barely visible at 20x, otherwise smooth. |
2n | = 16. |
|
Delphinium uliginosum |
Delphinium newtonianum |
|
Phenology | Flowering late spring–early summer. | Flowering early summer. |
Habitat | Serpentine streamsides, chaparral, grassland | Slopes in deciduous forest |
Elevation | 400-600 m (1300-2000 ft) | 500-700 m (1600-2300 ft) |
Distribution |
CA
|
AR |
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.) |
No cases of hybridization are known. Delphinium newtonianum often occurs in mixed populations with D. tricorne. It normally does not begin flowering until 4-6 weeks after D. tricorne has finished. (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. Grumosa |
Sibling taxa | ||
Name authority | Curran: Proc. Calif. Acad. Sci. 1: 151. (1885) | D. M. Moore: Rhodora 41: 196. (1939) |
Web links |