Flora of North America species comparison

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Delphinium nuttallii subsp. nuttallii

(synonym of Delphinium oreganum)

Delphinium sutherlandii
Delphinium oreganum

Willamette Valley larkspur

Sutherland's larkspur
Stems

40-70 cm.

(15-)30-70 cm;

base often reddish, glabrous.
Leaves

blade round, 1.5-10 × 3-18 cm, nearly glabrous; ultimate lobes 5-21, 5 or more extending more than 3/5 distance to petiole, width 3-9(-15) mm (basal), 0.5-6(-10) mm (cauline), widest at middle or in proximal 1/2.
Inflorescences

(2-)11-26(-37)-flowered, at least 2 times longer than wide;

pedicel 1-3 cm, puberulent;

bracteoles 2-7 mm from flowers, green to blue, linear-lanceolate, 3-5 mm, puberulent.
Flowers

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

lower petal blades 4.5-6.5 mm.

sepals dark blue, retaining color upon drying, puberulent, lateral sepals spreading, 14-20 × 5-10 mm, spurs gently decurved, ascending 0-20° above horizontal, 14-18 mm;

lower petal blades slightly elevated, ± covering stamens, white, yellowish, or tan, 8-12 mm, clefts 2-4 mm;

hairs short, sparse, mostly below junction of blade and claw, slightly offset to inner lobes, white.
Fruits

(13-)18-25 mm, 4.5-5.2 times longer than wide, puberulent.
Seeds

winged on 1 margin;

seed coat cell surfaces roughened.
2n

= 16.

= 16.

Delphinium nuttallii subsp. nuttallii

Delphinium sutherlandii
Phenology Flowering late spring–early summer. Flowering spring.
Habitat Rock outcrops, rocky meadows Dry meadows, rock outcrops, open conifer woods
Elevation 20-300 m (100-1000 ft) 400-800 m (1300-2600 ft)
Distribution
from FNA
OR; WA
from FNA
ID; MT; WA; BC
[BONAP county map]
Source FNA vol. 3. FNA vol. 3.
Parent taxa Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Grumosa > Delphinium nuttallii Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Grumosa
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. treleasei, D. tricorne, D. trolliifolium, D. uliginosum, D. umbraculorum, D. variegatum, D. viridescens, D. wootonii, D. xantholeucum
Name authority unknown M. J. Warnock: Phytologia 78: 97. (1995)
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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