Delphinium nudicaule

Torrey & A. Gray

Fl. N. Amer. 1: 33. 1838.

Common names: Red larkspur scarlet larkspur
EndemicIllustrated
Basionym: Delphinium armeniacum A. Heller 1940
Treatment appears in FNA Volume 3.

Stems (15-) 20-50 (-125) cm; base reddish, glabrous. Leaves mostly on proximal 1/3 of stem; basal leaves 2-7 at anthesis; cauline leaves 3-4 at anthesis; petiole 0.5-14 cm. Leaf-blade round to pentagonal, 2-6 × 3-10 cm; ultimate lobes 3-12, width 5-40 mm (basal), 2-20 mm (cauline). Inflorescences 5-20 (-69) -flowered; pedicel (1.5-) 2-6 (-8) cm, glabrous to glandular-pubescent; bracteoles 14-20 (-30) mm from flowers, green to red, linear, 2-4 (-9) mm, glabrous to puberulent. Flowers: sepals scarlet to reddish orange, rarely dull yellow, glabrous, lateral sepals forward-pointing to form pseudotube, (6-) 8-13 (-16) × 3-6 mm, spurs straight, slightly ascending, (12-) 18-27 (-34) mm; lower petal blades elevated, exposing stamens, 2-3 mm, clefts 0.5-1 mm; hairs sparse, evenly dispersed, yellow. Fruits 13-26 mm, 3.5-4.5 times longer than wide, glabrous. Seeds unwinged or sometimes slightly wing-margined; seed-coat cells with surfaces smooth. 2n = 16.


Phenology: Flowering late winter–early summer.
Habitat: Moist talus, cliff faces
Elevation: 0-2600 m

Discussion

Delphinium nudicaule hybridizes with most other taxa of Delphinium that it encounters. Apparent hybrids involving D. nudicaule, and seen by the author (either afield or as specimens), include D. andersonii, D. antoninum, D. decorum, D. luteum, D. nuttallianum, D. patens, and D. trolliifolium. In addition, garden-grown plants have been hybridized with D. cardinale, D. elatum, D. menziesii, D. parishii, D. penardii, D. tatsienense Franchet, D. triste Fischer ex de Candolle, and D. uliginosum; D. nudicaule does not naturally occur with these species. Delphinium nudicaule is one of the earliest larkspurs to flower in any given locality. Douglas's type collection of D. nudicaule represents plants (synonyms D. sarcophyllum Hooker & Arnott and D. peltatum Hooker, an invalid name) grown under very moist conditions, probably quite near the ocean. The type specimen of D. armeniacum A. Heller represents plants grown under unusually dry conditions.

The Mendocino Indians consider Delphinium nudicaule a narcotic (D. E. Moerman 1986).

Selected References

None.

Lower Taxa

None.

"/" is not declared as a valid unit of measurement for this property.

... more about "Delphinium nudicaule"
Michael J. Warnock +
Torrey & A. Gray +
usually larger +
narrowed +
expanded +
Delphinium armeniacum +
straight +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
smaller +
subopposite-subalternate +
0.4 cm4 mm <br />0.004 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
green +  and red +
1.4 cm14 mm <br />0.014 m <br /> (2 cm20 mm <br />0.02 m <br />) +
glabrous +  and puberulent +
minute +
0 cm0 mm <br />0 m <br /> (?) +  and 0.3 cm3 mm <br />0.003 m <br /> (?) +
globose;cylindric +
elongate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Red larkspur +  and scarlet larkspur +
Calif. +  and Oreg. +
0-2600 m +
sessile +  and pedicellate +
showy +  and inconspicuous +
1.3 cm13 mm <br />0.013 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
1.3 cm13 mm <br />0.013 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
sessile +  and aggregate +
curved-cylindric +
Moist talus, cliff faces +
dispersed +
5-20(-69)-flowered +
axillary +  and terminal +
less ovate +  and elliptic +
0.8 cm8 mm <br />0.008 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
round +  and pentagonal +
whorled +, opposite +  and alternate +
cauline +  and basal +
reduced +
lacerate;crenate +
clawed +, 2-lobed +, ovate +  and plane +
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
palmate +  and pinnate +
incised;toothed;incised;toothed;entire +
smaller +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
glabrous +  and glandular-pubescent +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
distinct +
conspicuous +
spurred +, funnel--shaped +, cup-shaped +  and plane +
reduced +
0.5 cm5 mm <br />0.005 m <br /> (14 cm140 mm <br />0.14 m <br />) +
Flowering late winter–early summer. +
1.3 cm13 mm <br />0.013 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Fl. N. Amer. +
2-100-flowered +
5 cm50 mm <br />0.05 m <br /> (40 cm400 mm <br />0.4 m <br />) +
braided +  and 2-9-branched +
30 cm300 mm <br />0.3 m <br /> (40 cm400 mm <br />0.4 m <br />) +
tuberlike +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
diffuse-fibrous +
wing-margined +  and unwinged +
dark-brown +  and black +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.29 cm2.9 mm <br />0.0029 m <br />) +
obpyramidal +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
yellow;scarlet;reddish orange +
not persistent +
distinct +
3 +  and 6 +
not +  and veined +
Endemic +  and Illustrated +
2.7 cm27 mm <br />0.027 m <br /> (3.4 cm34 mm <br />0.034 m <br />) +
straight +
1.8 cm18 mm <br />0.018 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
50 cm500 mm <br />0.5 m <br /> (125 cm1,250 mm <br />1.25 m <br />) +
20 cm200 mm <br />0.2 m <br /> (50 cm500 mm <br />0.5 m <br />) +
persistent +
Delphinium nudicaule +
Delphinium subsect. Bicoloria +
species +
0.2 cm2 mm <br />0.002 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
herbaceous +  and woody +