Flora of North America species comparison

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Delphinium lineapetalum

Delphinium geraniifolium

thinpetal larkspur

Clark Valley larkspur, Mogollon larkspur
Stems

(15-)30-60 cm;

base usually reddish, glabrous to glaucous.

60-100 cm;

base reddish, puberulent, midstems pubescent.
Leaves

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

blade dark green, at least adaxially, fan-shaped to reniform, 2-5 × 3-7 cm, pubescent, especially abaxially; ultimate lobes 5-15, width 4-15 mm (basal lobes 5-15 mm), apex abruptly tapered, usually mucronate;

veins prominent.
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.

20-90-flowered, dense, cylindric;

pedicel ascending to spreading, 1-2 cm, puberulent;

bracteoles 1-2 mm from flowers, green, linear, 4-6 mm, 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.

sepals dark blue to purple, puberulent, lateral sepals spreading to slightly forward pointing, 10-14 × 3-5 mm, spurs ascending 20-70°, truncate or downcurved apically, 12-15 mm;

lower petal blades slightly elevated, ± exposing stamens, 4-6 mm, clefts 0.5-2 mm;

hairs sparse, local below junction of blade and claw, scattered on margins, white.
Fruits

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

13-18 mm, 3-3.5 times longer than wide, puberulent.
Seeds

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

unwinged;

seed coat cells with margins straight, surfaces ± roughened.
2n

= 16.

Delphinium lineapetalum

Delphinium geraniifolium
Phenology Flowering spring. Flowering summer.
Habitat Open pine woods, dry meadows Heavy clay soil, dry meadows in coniferous woods
Elevation 400-1800 m (1300-5900 ft) 1800-3400 m (5900-11200 ft)
Distribution
from FNA
WA
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; NM
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Delphinium geraniifolium is a more pubescent analog of the closely related D. scopulorum, the former occurring in heavier soils at higher elvation.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 3. FNA vol. 3.
Parent taxa Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Subscaposa Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Wislizenana
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
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. 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, D. xantholeucum
Synonyms D. nuttallianum var. lineapetalum D. tenuisectum subsp. amplibracteatum
Name authority Ewan: Univ. Colorado Stud., Ser. D, Phys. Sci. 2: 126. (1945) Rydberg: Bull. Torrey Bot. Club 26: 583. (1899)
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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