Flora of North America species comparison

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Delphinium nuttallii subsp. nuttallii

(synonym of Delphinium oreganum)

Delphinium multiplex
Delphinium oreganum

Willamette Valley larkspur

Kittitas larkspur
Stems

40-70 cm.

(40-)80-130(-180) cm;

base usually green, glabrous.
Leaves

blade round on proximal stem, ± cuneate on distal stem, 1.5-9 × 2-14 cm, glabrous; ultimate lobes 3-15, width 15-30 mm (basal), 1-20 mm (cauline).
Inflorescences

25-50-flowered, ± dense;

pedicel 0.5-2 cm, glandular-puberulent;

bracteoles 4-5 mm from flowers, green to blue, lanceolate-linear, 3-7 mm, glandular-puberulent.
Flowers

sepals blue or bluish purple, spurs 10-13 mm;

lower petal blades 4.5-6.5 mm.

sepals dark blue, puberulent, lateral sepals forward pointing to spreading, 12-15 × 5-7 mm, spurs straight, within 20° of horizontal, 12-16 mm;

lower petal blades slightly elevated, exposing stamens, 6-8 mm, clefts 2-3 mm;

hairs centered, mostly near base of cleft, white.
Fruits

10-15 mm, 3-4 times longer than wide, glandular-puberulent.
Seeds

narrowly wing-margined;

seed coat cells with surfaces somewhat roughened.
2n

= 16.

= 16.

Delphinium nuttallii subsp. nuttallii

Delphinium multiplex
Phenology Flowering late spring–early summer. Flowering late spring–summer.
Habitat Rock outcrops, rocky meadows Rocky streambeds
Elevation 20-300 m (100-1000 ft) 1500-1800 m (4900-5900 ft)
Distribution
from FNA
OR; WA
from FNA
WA
[WildflowerSearch map]
[BONAP county map]
Discussion

Delphinium multiplex hybridizes with D. glaucum and D. distichum.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 3. FNA vol. 3.
Parent taxa Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Grumosa > Delphinium nuttallii Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Multiplex
Sibling taxa
D. nuttallii subsp. nuttallii, D. nuttallii subsp. ochroleucum
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. 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
Synonyms D. cyanoreios
Name authority unknown (Ewan) C. L. Hitchcock: in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. 2: 357. (1964)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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