Delphinium brachycentrum

Ledebour

Fl. Ross. 1: 60. 1841.

Common names: Arctic larkspur
Synonyms: Delphinium chamissonis Pritzel ex Walpers
Treatment appears in FNA Volume 3.

Stems 20-50 (-80) cm; base often reddish, pubescent. Leaves cauline, 5-14, on proximal 1/5 of stem at anthesis; petiole 0.4-9 cm. Leaf-blade round to pentagonal, 1.5-6 × 3-11 cm, puberulent; ultimate lobes 5-15, width 1-7 (-15) mm. Inflorescences 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, 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 14-17 mm, 3.5-4 times longer than wide, pubescent. Seeds wing-margined; seed-coat cells ± elongate, surfaces roughened.


Phenology: Flowering summer.
Habitat: Well-drained tundra slopes
Elevation: 0-1600 m

Discussion

Hybrids with Delphinium glaucum are known as D. ×nutans A. Nelson.

Selected References

None.

Lower Taxa

None.
... more about "Delphinium brachycentrum"
puberulent +
rounded +
Michael J. Warnock +
Ledebour +
usually larger +
not narrowed +
expanded +
straight +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
subopposite-subalternate +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
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 /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Arctic larkspur +
Yukon +, Alaska +  and e Asia +
0-1600 m +
sessile +  and pedicellate +
showy +  and inconspicuous +
cylindric +
1.4 cm14 mm <br />0.014 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
sessile +  and aggregate +
curved-cylindric +
Well-drained tundra slopes +
centered +  and local +
axillary +  and terminal +
1.7 cm17 mm <br />0.017 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
less ovate +  and elliptic +
0.8 cm8 mm <br />0.008 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (6 cm60 mm <br />0.06 m <br />) +
round +  and pentagonal +
whorled +, opposite +  and alternate +
smaller +, slightly below middle slightly below middle internodes +  and largest +
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 +
reduced +
1 cm10 mm <br />0.01 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
distinct +
conspicuous +
spurred +, funnel--shaped +, cup-shaped +  and plane +
reduced +
0.4 cm4 mm <br />0.004 m <br /> (9 cm90 mm <br />0.09 m <br />) +
Flowering summer. +
2-100-flowered +
5 cm50 mm <br />0.05 m <br /> (40 cm400 mm <br />0.4 m <br />) +
twisted +  and 4-15-branched +
tuberlike +
10 cm100 mm <br />0.1 m <br /> (80 cm800 mm <br />0.8 m <br />) +
wing-margined +
dark-brown +  and black +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
not ringed +
rectangular +  and crescent-shaped +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
not persistent +
distinct +
3 +  and 6 +
not +  and veined +
straight +
ascending +  and decurved +
1.5 cm15 mm <br />0.015 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
50 cm500 mm <br />0.5 m <br /> (80 cm800 mm <br />0.8 m <br />) +
3 +  and 8 +
20 cm200 mm <br />0.2 m <br /> (50 cm500 mm <br />0.5 m <br />) +
persistent +
Delphinium chamissonis +
Delphinium brachycentrum +
Delphinium subsect. Exaltata +
species +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
herbaceous +  and woody +