Flora of North America species comparison

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Delphinium nuttallii subsp. nuttallii

(synonym of Delphinium oreganum)

Delphinium glareosum
Delphinium oreganum

Willamette Valley larkspur
Delphinium glareosum

Olympic larkspur, Olympic Mountain larkspur, rockslide larkspur
Stems

40-70 cm.

20-40 cm;

base reddish or not, glabrous, glaucous.
Leaves

blade round, 2-4 × 3-7 cm, not succulent, glabrous; ultimate lobes 7-15, width 3-10 mm (basal), 2-7 mm (cauline).
Inflorescences

5-12-flowered;

pedicel 1-5(-10) cm, nearly glabrous to glandular-puberulent;

bracteoles 2-10(-20) mm from flowers, green, linear, 3-8 mm, puberulent.
Flowers

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

lower petal blades 4.5-6.5 mm.

sepals dark blue, nearly glabrous, lateral sepals spreading, 14-22 × 6-10 mm, spurs ± straight, orientation varies from 30° above to 30° below horizontal, 16-20 mm;

lower petal blades slightly elevated, ± covering stamens, 6-9 mm, clefts 2-4 mm;

hairs local, densest on inner lobes near base of cleft, white to light yellow.
Fruits

12-17 mm, 2.5-3 times longer than wide, glabrous.
Seeds

± wing-margined;

seed coat cells with surfaces smooth.
2n

= 16.

Delphinium nuttallii subsp. nuttallii

Delphinium glareosum
Phenology Flowering late spring–early summer. Flowering summer.
Habitat Rock outcrops, rocky meadows Steep rocky subalpine to alpine slopes
Elevation 20-300 m (100-1000 ft) 1500-2800 m (4900-9200 ft)
Distribution
from FNA
OR; WA
from FNA
OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
Discussion

See discussion under Delphinium bicolor.

(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. Bicoloria
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. 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. viridescens, D. wootonii, D. xantholeucum
Synonyms D. caprorum
Name authority unknown Greene: Pittonia 3: 257. (1898)
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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