familyRanunculaceae
genusDelphinium
sectionDelphinium sect. Diedropetala
subsectionDelphinium subsect. Echinata
speciesDelphinium hesperium
subspeciesDelphinium hesperium subsp. pallescens

Delphinium hesperium subsp. pallescens

(Ewan) H. F. Lewis & Epling

Brittonia 8: 10. 1954.

Michael J. Warnock
Common names: Pale-flowered western larkspur
Endemic
Basionym: Delphinium hesperium A. Gray forma pallescens Ewan Univ. Colorado Stud., Ser. D, Phys. Sci. 2: 179. 1945
Treatment appears in FNA Volume 3.

Stems usually glabrous. Inflorescences usually fewer than 25-flowered, open; pedicel ± spreading. Flowers: sepals white to pinkish, rarely light blue, spreading, lateral sepals 10-15 mm, more than 4 mm wide, spurs 10-17 mm; lower petal blades 4-7 mm. Fruits 3-3.5 times longer than wide. 2n = 16.


Phenology: Flowering spring.
Habitat: Open oak woods and grassland
Elevation: 20-1000 m

Distribution

V3 765-distribution-map.gif

Calif.

Discussion

Delphinium hesperium subsp. pallescens grows only east of the Coast Range divide. It hybridizes with D. gypsophilum, D. parryi, D. recurvatum, D. uliginosum, and D. variegatum. Light blue sepals probably result from introgression involving D. variegatum, D. parryi, or D. hesperium subsp. hesperium. Intermediates are occasionally found between D. hesperium subsp. pallescens and subsp. hesperium (particularly in Napa County), but the two taxa remain, for the most part, geographically isolated.

Delphinium hesperium subsp. pallescens has sometimes been confused with D. gypsophilum or with white-flowered plants of D. hansenii; see discussion under those species.

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

... more about "Delphinium hesperium subsp. pallescens"
RDF feed
2n chromosome quantity
16 +
Anther dehiscence
dehiscing +
Author
Michael J. Warnock +
Authority
(Ewan) H. F. Lewis & Epling +
Basal leaf quantity
0;3 +
Basal leaf size
usually larger +
Basal petiole orientation
spreading +
Base coloration
reddish +
Base fixation
attached +
Base pubescence
puberulent +
Base shape
ridged +
Base size
expanded +
Basionyms
Delphinium hesperium +
Beak course
straight +
Beak position or structure subtype
terminal +
Beak some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Bract quantity
fewer +
Bract shape
lobed +
Bract size
smaller +
Bracteole architecture
sepaloid +
Bracteole arrangement
subopposite-subalternate +
Bracteole atypical some measurement
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Bracteole coloration
green +  and blue +
Bracteole location
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Bracteole presence
absent +
Bud size
minute +
Bud some measurement
0 cm0 mm <br />0 m <br /> (?) +  and 0.3 cm3 mm <br />0.003 m <br /> (?) +
Capsule arrangement
aggregated +
Capsule shape
globose;cylindric +
Cauline leaf arrangement
alternate +
Cauline leaf quantity
3 (8) +
Cauline petiole orientation
ascending +
Cell margin course
straight +
Cell margin shape
undulate +
Cell shape
brick--shaped +
Cleft some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Common name
Pale-flowered western larkspur +
Distribution
Calif. +
Elevation
20-1000 m +
Embryo size
small +
Endosperm quantity
abundant +
Eye architecture
less smooth;naked +
Flower architecture
sessile +  and pedicellate +
Flower architecture or arrangement or growth form
solitary +
Flower architecture or shape
symmetric +
Flower prominence
showy +  and inconspicuous +
Flower quantity
2;11 +
Flower reproduction
bisexual +
Fruit count or density
sparse +
Fruit l w ratio
3-3.5 +
Fruit orientation
erect +
Fruit pubescence
puberulent +
Fruit quantity
5 +
Fruit some measurement
0.8 cm8 mm <br />0.008 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
Fruits follicle architecture
sessile +  and aggregate +
Fruits follicle shape
curved-cylindric +
Habitat
Open oak woods and grassland +
Hair coloration
white +
Hair density
denser +
Hair position
centered +
Illustration copyright
Flora of North America Association +
Illustrator
John Myers +
Inflorescence architecture
open +  and 0-25-flowered +
Inflorescence density
dense +
Inflorescence position
axillary +  and terminal +
Inflorescence position or structure subtype
terminal +
Inflorescence shape
cylindric +
Lateral sepal atypical length
1.3 cm13 mm <br />0.013 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
Lateral sepal length
0.7 cm7 mm <br />0.007 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Lateral sepal orientation
spreading +
Lateral sepal quantity
2 +
Lateral sepal shape
less ovate +  and elliptic +
Lateral sepal some measurement
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Lateral sepal width
3mm;10mm +
Leaf-blade architecture
compound +
Leaf-blade architecture or shape
undivided +
Leaf-blade length
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Leaf-blade pubescence
puberulent +
Leaf-blade shape
round +  and pentagonal +
Leaf-blade width
2cm;6cm +
Leaf architecture
petiolate +
Leaf arrangement
whorled +, opposite +  and alternate +
Leaf blade shape
Rounded (?) +
Leaf position
cauline +
Leaf size
largest +
Lobe shape
lacerate;crenate +
Lower petal quantity
2 +
Lower petal shape
clawed +, 2-lobed +, ovate +  and plane +
Lower petal some measurement
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Lower sepal quantity
2 +
Margin architecture
palmate +  and pinnate +
Margin architecture or shape
entire +
Margin atypical some measurement
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Margin coloration
white +
Margin course
straight +
Margin pubescence
puberulent +
Margin shape
linear-lanceolate +
Margin some measurement
3mm;7mm +
Midpedicel angle degree
30+° +
Nectary presence
absent +
Number of lower taxa
0 +
Other size
smaller +
Ovule quantity
8;20 +
Pedicel atypical some measurement
2.5 cm25 mm <br />0.025 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
Pedicel orientation
spreading +
Pedicel presence
absent +
Pedicel pubescence
puberulent +
Pedicel some measurement
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Perianth position
hypogynous +
Petal blade prominence
elevated +
Petal blade some measurement
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Petal fusion
distinct +
Petal prominence
conspicuous +
Petal quantity
0;26 +
Petal shape
spurred +, funnel--shaped +, cup-shaped +  and plane +
Petal size
reduced +
Petiole architecture or shape
sheathing +
Petiole height or length or size
shorter +
Petiole presence
absent +
Petiole pubescence
glabrous;puberulent +
Petiole some measurement
0.5 cm5 mm <br />0.005 m <br /> (7 cm70 mm <br />0.07 m <br />) +
Phenology
Flowering spring. +
Pistil architecture
simple +
Pistil atypical quantity
3 (5) +
Pistil quantity
3 +
Publication title
Brittonia +
Publication year
1954 +
Raceme architecture
2-100-flowered +
Raceme some measurement
5 cm50 mm <br />0.05 m <br /> (40 cm400 mm <br />0.4 m <br />) +
Reference
None +
Ridge shape
wavy +
Root architecture
3-9(-20)-branched +
Root architecture or arrangement
fascicled +
Root atypical some measurement
8 cm80 mm <br />0.08 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Root shape
tuberlike +
Root some measurement
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Root texture
succulent +, dry +  and fleshy +
Seed architecture
not echinate +
Seed coloration
dark-brown +  and black +
Seed length
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Seed pubescence or relief
rough +
Seed quantity
1;many +
Seed relief
not ringed +
Seed shape
rectangular +
Seed width
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Segment shape
thread-like +
Segment size
major +
Sepal architecture
petaloid +
Sepal architecture or shape
spurred +
Sepal arrangement
imbricate +
Sepal atypical quantity
6 (20) +
Sepal coloration
light blue;white;pinkish +
Sepal duration
not persistent +
Sepal fusion
distinct +
Sepal orientation
spreading +
Sepal pubescence
puberulent +
Sepal quantity
3 +  and 6 +
Side architecture
not +  and veined +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V3/V3 765.xml +
Special status
Endemic +
Spur course
straight +
Spur orientation
ascending +  and upcurved +
Spur some measurement
1 cm10 mm <br />0.01 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
Stamen fusion
distinct +
Stamen quantity
25;40 +
Staminode presence
absent +
Stem architecture
unbranched +
Stem atypical quantity
1 (2) +
Stem atypical some measurement
80 cm800 mm <br />0.8 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
Stem pubescence
glabrous +
Stem quantity
1 +
Stem some measurement
40 cm400 mm <br />0.4 m <br /> (80 cm800 mm <br />0.8 m <br />) +
Stipule presence
absent +
Style duration
persistent +
Style presence
absent +
Surface relief
roughened;smooth +
Taxon family
Ranunculaceae +
Taxon name
Delphinium hesperium subsp. pallescens +
Taxon parent
Delphinium hesperium +
Taxon rank
subspecies +
Ultimate lobe quantity
3 (14) +
Ultimate lobe some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Ultimate lobe width
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Upper petal architecture or shape
spurred +
Upper petal quantity
2 +
Upper sepal architecture or shape
spurred +
Upper sepal quantity
1 +
Upper sepal some measurement
0.8 cm8 mm <br />0.008 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
Volume
Volume 3 +
Week quantity
2 (10) +
Whole organism architecture
rhizomatous +
Whole organism duration
perennial +
Whole organism growth form
herb +
Whole organism position
low +
Whole organism texture
herbaceous +  and woody +
Wider lobe quantity
fewer +
X chromosome quantity
8 +