Flora of North America species comparison

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Delphinium lineapetalum

thinpetal larkspur
Stems

(15-)30-60 cm;

base usually reddish, glabrous to glaucous.
Leaves

blade round, 1-5 × 2-6 cm, glabrous; ultimate lobes 5-16, width 1-4 mm (basal), 0.5-3 mm (cauline).
Inflorescences

(3-)9-24(-40)-flowered, pyramidal;

pedicel spreading, 1-2.5 cm, glabrous or glandular-puberulent;

bracteoles 4-7 mm from flowers, blue or green, linear, 1-3 mm, glabrous or glandular-puberulent.
Flowers

sepals light blue to lavender, nearly glabrous, lateral sepals reflexed, 10-13 × 3-5 mm, spurs straight to slightly decurved, nearly horizontal to ascending ca. 30°, 11-17 mm;

lower petal blades elevated, exposing stamens, 3-5 mm, clefts 0.5-2 mm;

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

13-21 mm, 4-4.5 times longer than wide, puberulent to glabrous.
Seeds

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

Delphinium lineapetalum
Phenology Flowering spring.
Habitat Open pine woods, dry meadows
Elevation 400-1800 m (1300-5900 ft)
Distribution
from FNA
WA
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 3.
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. 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. nuttallianum var. lineapetalum
Name authority Ewan: Univ. Colorado Stud., Ser. D, Phys. Sci. 2: 126. (1945)
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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