Flora of North America species comparison

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Delphinium purpusii

Delphinium distichum

Kern County larkspur, Purpus' larkspur, rose-color larkspur, rose-flower larkspur
Delphinium distichum

Burke's larkspur, meadow larkspur, strict larkspur, two-spike larkspur
Stems

(30-)50-80(-120) cm;

base reddish or not, nearly glabrous.

(25-)30-60(-80) cm;

base sometimes reddish, puberulent.
Leaves

blade round, 1.5-6 × 2-10 cm, ± puberulent; ultimate lobes 0-5, width 5-30(-50) mm (basal), 5-20(-40) mm (cauline).

blade cuneate to semicircular, 1-5 × 1.5-7 cm, puberulent; ultimate lobes 5-19, width 2-8(-15) mm (basal), 0.5-3(-5) mm (cauline);

margins of basal leaf, measured less than 1 cm from blade base, demarcating considerably more than 90° of arc when leaf laid flat;

most cauline leaf blades exceeding internodes.
Inflorescences

(8-)12-20(-32)-flowered, ± cylindric;

pedicel ± ascending, (0.5-)1-4(-5) cm, glandular-puberulent;

bracteoles 1-6 mm from flowers, green to magenta, linear, 2-4 mm, glandular-puberulent.

8-30(-40)-flowered, usually dense;

pedicel 0.5-1.5 cm, puberulent;

bracteoles 0-3 mm from flowers, green to blue, linear, 4-8 mm, puberulent.
Flowers

sepals magenta to rose, nearly glabrous, lateral sepals reflexed, 10-16 × 3-7 mm, spurs straight, 30-45° above horizontal, (10-)14-19 mm;

lower petal blades nearly coplanar with claws, exposing stamens, 3-4 mm, clefts 0.5-1.5 mm;

hairs sparse, scattered, white.

sepals dark blue to bluish purple, puberulent, lateral sepals ± erect, 8-12 × 3.5-5 mm, spurs straight, horizontal or nearly so, 9-15 mm;

lower petal blades ± covering stamens, 4.5-6.5 mm, clefts 2-3 mm;

hairs centered mostly near base of cleft, white.
Fruits

(11-)18-29 mm, 4-4.5 times longer than wide, glabrous.

7-13 mm, 3.5-4 times longer than wide, ± puberulent.
Seeds

seed coats with small wavy ridges, cells brick-shaped, cell margins undulate, surfaces smooth.

seed coat cells with surfaces roughened.
2n

= 16.

= 16.

Delphinium purpusii

Delphinium distichum
Phenology Flowering spring. Flowering late spring–early summer.
Habitat Talus, cliffs, on and near large boulders Wet meadows
Elevation 300-1300 m (1000-4300 ft) 100-2400 m (300-7900 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
ID; MT; OR; WA; WY; BC
[WildflowerSearch map]
Discussion

Of conservation concern.

Delphinium purpusii is not likely to be confused with any other Delphinium in North America. Hybrids with Delphinium hansenii subsp. kernense are known to occur.

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

Delphinium distichum hybridizes with D. multiplex and D. nuttallianum (D. ×diversicolor Rydberg). The name D. burkei has often been misapplied to D. distichum.

(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. Depauperata
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. 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. 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, D. xantholeucum
Synonyms D. strictum var. distichiflorum
Name authority Brandegee: Bot. Gaz. 27: 444. (1899) Geyer ex Hooker: J. Bot. 6: 68. (1847)
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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