Flora of North America species comparison

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Delphinium nuttallii subsp. nuttallii

(synonym of Delphinium oreganum)

Delphinium wootonii
Delphinium oreganum

Willamette Valley larkspur

Organ Mountain larkspur, Wooton's larkspur
Stems

40-70 cm.

(15-)30-50(-60) cm;

base sometimes reddish, pubescent.
Leaves

blade reniform to fan-shaped, 1.5-3 × 2.5-4 cm, puberulent; ultimate lobes 5-24, width 2-6 mm (basal), 1-3 mm (cauline).
Inflorescences

15-30(-49)-flowered;

pedicel 1-2(-3.6) cm, puberulent;

bracteoles 1-5 mm from flowers, green, linear, 1-4(-12) mm, puberulent.
Flowers

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

lower petal blades 4.5-6.5 mm.

sepals white to lavender, nearly glabrous, lateral sepals usually reflexed, (6-)8-13 × 3-7 mm, spur straight, ascending 30-80° above horizontal, (8-)13-20(-25) mm;

lower petal blades ± elevated, 6-9 mm, cleft 2.5-4.5 mm;

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

(10-)11-20(-24) mm, 3-3.5 times longer than wide, glabrous.
Seeds

seed coat cells with surfaces pustulate.
2n

= 16.

= 16.

Delphinium nuttallii subsp. nuttallii

Delphinium wootonii
Phenology Flowering late spring–early summer. Flowering spring.
Habitat Rock outcrops, rocky meadows Oak woods, grasslands, desert scrub
Elevation 20-300 m (100-1000 ft) 700-1800 m (2300-5900 ft)
Distribution
from FNA
OR; WA
from FNA
AZ; CO; NM; TX; Mexico (Sonora, Chihuahua, and Coahuila)
[WildflowerSearch map]
[BONAP county map]
Discussion

Delphinium wootonii hybridizes with D. madrense in the eastern Big Bend area of Texas, and with D. carolinianum subsp. virescens.

(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. Virescens
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. 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. xantholeucum
Synonyms D. virescens subsp. wootonii
Name authority unknown Rydberg: Bull. Torrey Bot. Club 26: 587. (1900)
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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