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Delphinium viridescens

Wenatchee larkspur

golden larkspur, yellow larkspur

Stems

90-150 cm;

base usually green, glabrous.

20-40(-55) cm;

base often reddish, nearly glabrous.

Leaves

blade cuneate to semicircular, 2-5 × 3-12 cm, nearly glabrous; ultimate lobes 3-21, width 1-8 mm.

blade round to pentagonal, 1-5 × 2-10 cm, nearly glabrous; ultimate lobes 3-5, width 8-30 mm (basal), 5-15 mm (cauline).

Inflorescences

25-80-flowered, dense;

pedicel 0.5-2 cm, glandular-pubescent;

bracteoles 1-4 mm from flowers, green, lanceolate, 3.5-6 mm, glandular-pubescent.

5-25(-37)-flowered;

pedicel (1-)3-5(-7) cm, puberulent;

bracteoles 6-10(-17) mm from flowers, green, linear-lanceolate, 6-7 mm, nearly glabrous.

Flowers

sepals yellowish green, nearly glabrous, lateral sepals forward pointing, 7-9 × 3-4 mm, spurs decurved, 30-45° below horizontal, often hooked apically, 8-11 mm;

lower petal blades ± covering stamens, 4-6 mm, clefts 0.5-1.5 mm;

hairs centered, mostly near junction of blade and claw, yellow.

sepals bright yellow, puberulent, appearing waxy, lateral sepals ± forward pointing, (11-)14-16 × (6-)9-13 mm, spur straight, ca. 30° below horizontal, 11-20 mm;

lower petal blades elevated, exposing stamens, 3-4 mm, clefts 0.5-1.5 mm;

hairs sparse or absent, ± evenly distributed if present, white to yellow.

Fruits

8-11 mm, 2.5-3 times longer than wide, puberulent.

11-14 mm, 3.5-4.5 times longer than wide, glabrous.

Seeds

± wing-margined;

seed coat cells with surfaces ± roughened.

unwinged;

seed coat cell surfaces smooth.

Delphinium viridescens

Delphinium luteum

Phenology Flowering summer. Flowering late winter-mid spring.
Habitat Wet meadows and streamsides in coniferous forest, heavy clay soils Wet cliffs, coastal grassland or chaparral
Elevation 500-1000 m [1600-3300 ft] 0-50 m [0-200 ft]
Distribution
from FNA
WA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

Delphinium viridescens is local in mountains southwest of Wenatchee, Washington.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Of conservation concern.

Delphinium luteum is presently known from only three populations. It is known to hybridize with D. decorum and with D. nudicaule. Populations of D. hesperium subsp. hesperium also occur at the type locality; D. luteum flowers earlier and hybrids are not known.

Delphinium luteum is not likely to be mistaken for any other species of Delphinium. It has been treated as a variety of D. nudicaule and is closely related to that species. Sepals of the infrequent yellow-flowered phase of D. nudicaule, however, have a much drabber appearance compared with the bright shining yellow of the sepals in D. luteum.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 3. FNA vol. 3.
Parent taxa Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Multiplex Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Bicoloria
Sibling taxa
D. alabamicum, D. alpestre, D. andersonii, D. andesicola, D. antoninum, D. bakeri, D. barbeyi, D. basalticum, D. bicolor, D. brachycentrum, D. californicum, D. cardinale, D. carolinianum, D. decorum, D. depauperatum, D. distichum, D. elatum, D. exaltatum, D. geraniifolium, D. geyeri, D. glareosum, D. glaucescens, D. glaucum, D. gracilentum, D. gypsophilum, D. hansenii, D. hesperium, D. hutchinsoniae, D. inopinum, D. lineapetalum, D. luteum, D. madrense, D. menziesii, D. multiplex, D. newtonianum, D. novomexicanum, D. nudicaule, D. nuttallianum, D. nuttallii, D. parishii, D. parryi, D. patens, D. polycladon, D. purpusii, D. ramosum, D. recurvatum, D. robustum, D. sapellonis, D. scaposum, D. scopulorum, D. stachydeum, D. sutherlandii, D. treleasei, D. tricorne, D. trolliifolium, D. uliginosum, D. umbraculorum, D. variegatum, D. wootonii, D. xantholeucum
D. alabamicum, D. alpestre, D. andersonii, D. andesicola, D. antoninum, D. bakeri, D. barbeyi, D. basalticum, D. bicolor, D. brachycentrum, D. californicum, D. cardinale, D. carolinianum, D. decorum, D. depauperatum, D. distichum, D. elatum, D. exaltatum, D. geraniifolium, D. geyeri, D. glareosum, D. glaucescens, D. glaucum, D. gracilentum, D. gypsophilum, D. hansenii, D. hesperium, D. hutchinsoniae, D. inopinum, D. lineapetalum, D. madrense, D. menziesii, D. multiplex, D. newtonianum, D. novomexicanum, D. nudicaule, D. nuttallianum, D. nuttallii, D. parishii, D. parryi, D. patens, D. polycladon, D. purpusii, D. ramosum, D. recurvatum, D. robustum, D. sapellonis, D. scaposum, D. scopulorum, D. stachydeum, D. sutherlandii, D. treleasei, D. tricorne, D. trolliifolium, D. uliginosum, D. umbraculorum, D. variegatum, D. viridescens, D. wootonii, D. xantholeucum
Name authority Leiberg: Proc. Biol. Soc. Wash. 11: 39. (1897) A. Heller: Bull. S. Calif. Acad. Sci. 6: 68. (1903)
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