Delphinium decorum subsp. decorum

Common names: Coast larkspur
Endemic
Treatment appears in FNA Volume 3.

Stems (8-) 15-25 (-35) cm. Leaves: ultimate lobes 3-5, longer than 1/2 leaf radius, merely cleft near apices. Inflorescences puberulent, hairs glandular or not. Flowers: lateral sepals 12-24 mm, spurs 13-19 mm; lower petal hairs yellow.


Phenology: Flowering early-mid spring.
Habitat: Grasslands, open coastal chaparral
Elevation: 0-100 m

Discussion

The names Delphinium decorum var. racemosum Eastwood and D. decorum var. sonomensis Eastwood have been used for various hybrids between D. decorum subsp. decorum and D. patens. The type specimen of D. decorum var. sonomensis appears to represent a nearly direct intermediate between D. decorum and D. patens. These hybrids are quite common in the San Francisco Bay region where habitats have been disturbed. Normally a woodland plant, D. patens contrasts with D. decorum, which occurs in grassland and brushland. Delphinium decorum subsp. decorum also hybridizes with D. luteum, D. nudicaule, and D. trolliifolium.

Selected References

None.

Lower Taxa

None.

No values specified.

Michael J. Warnock +
Fischer & C. A. Meyer +
usually larger +
not +  and reddish +
narrowed +
expanded +
Delphinium sect. Grumosa +
straight +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
smaller +
subopposite-subalternate +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
green +  and blue +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
linear-lanceolate +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
minute +
0 cm0 mm <br />0 m <br /> (?) +  and 0.3 cm3 mm <br />0.003 m <br /> (?) +
globose;cylindric +
roughened +  and smooth +
elongate +
Coast larkspur +
0-100 m +
sessile +  and pedicellate +
showy +  and inconspicuous +
glabrous +  and puberulent +
0.9 cm9 mm <br />0.009 m <br /> (2 cm20 mm <br />0.02 m <br />) +
sessile +  and aggregate +
curved-cylindric +
Grasslands, open coastal chaparral +
white;yellow +
blunt +  and swollen +
2-10(-20)-flowered +
axillary +  and terminal +
2 cm20 mm <br />0.02 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
less ovate +  and elliptic +
1.2 cm12 mm <br />0.012 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
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 +
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
puberulent +  and glabrous +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
distinct +
conspicuous +
reduced +
0.5 cm5 mm <br />0.005 m <br /> (7 cm70 mm <br />0.07 m <br />) +
Flowering early-mid spring. +
Ind. Sem. Hort. Petrop. +
2-100-flowered +
5 cm50 mm <br />0.05 m <br /> (40 cm400 mm <br />0.4 m <br />) +
cormlike +  and fascicled +
7 cm70 mm <br />0.07 m <br /> (16 cm160 mm <br />0.16 m <br />) +
tuberlike +
2 cm20 mm <br />0.02 m <br /> (7 cm70 mm <br />0.07 m <br />) +
succulent +, fleshy +  and fibrous +
wing-margined +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
obpyramidal +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
bluish purple +
not persistent +
distinct +
3 +  and 6 +
not +  and veined +
straight +
1.3 cm13 mm <br />0.013 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +
persistent +
Delphinium decorum subsp. decorum +
Delphinium decorum +
subspecies +
0.1 cm1 mm <br />0.001 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
herbaceous +  and woody +