Flora of North America species comparison

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Delphinium xantholeucum
Delphinium xantholeucum

yellow-white larkspur
Stems

40-60(-100) cm;

base often reddish, glabrous, ± glaucous.
Leaves

blade round, 2-6 × 4-10 cm, nearly glabrous;

ultimate lobes 3-15, width 3-8 mm (basal), 1-5 mm (cauline).
Inflorescences

10-20(-60)-flowered, narrowly pyramidal;

pedicel spreading, yellowish, 1.5-3 cm, ± glandular-puberulent;

bracteoles 6-12 mm from flowers, green to light brown, linear to lanceolate, 4-7 mm, nearly glabrous.
Flowers

sepals yellow, glabrous, lateral sepals reflexed, 9-12 × 3-5 mm, spurs straight, ascending ca. 45° above horizontal, 11-15 mm;

lower petal blades elevated, exposing stamens, 3-5 mm, clefts 1-2 mm;

hairs centered mostly on inner lobes near base of cleft, white.
Fruits

15-22 mm, 3-4 times longer than wide, glabrous to glandular-puberulent.
Seeds

seed coat cells narrow, short, cell margins straight, surfaces smooth.
2n

= 16.

Delphinium xantholeucum
Phenology Flowering spring.
Habitat Slopes in open yellow pine forests, grasslands, sage scrub
Elevation 150-600 m [500-2000 ft]
Distribution
map from FNA
WA
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

Delphinium xantholeucum is very local; much of the habitat of this species has been converted to orchards.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Parent taxa Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Subscaposa
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. viridescens, D. wootonii
Name authority Piper: Contr. U.S. Natl. Herb. 11: 280. (1906)
Source FNA vol. 3. Treatment author: Michael J. Warnock.
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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