Delphinium xantholeucum |
Delphinium geraniifolium |
|
---|---|---|
yellow-white larkspur |
Clark Valley larkspur, Mogollon larkspur |
|
Stems | 40-60(-100) cm; base often reddish, glabrous, ± glaucous. |
60-100 cm; base reddish, puberulent, midstems pubescent. |
Leaves | blade round, 2-6 × 4-10 cm, nearly glabrous; ultimate lobes 3-15, width 3-8 mm (basal), 1-5 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 | 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. |
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 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. |
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 | 15-22 mm, 3-4 times longer than wide, glabrous to glandular-puberulent. |
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. |
= 16. |
Delphinium xantholeucum |
Delphinium geraniifolium |
|
Phenology | Flowering spring. | Flowering summer. |
Habitat | Slopes in open yellow pine forests, grasslands, sage scrub | Heavy clay soil, dry meadows in coniferous woods |
Elevation | 150-600 m (500-2000 ft) | 1800-3400 m (5900-11200 ft) |
Distribution |
WA
|
AZ; NM
|
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.) |
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 | ||
Synonyms | D. tenuisectum subsp. amplibracteatum | |
Name authority | Piper: Contr. U.S. Natl. Herb. 11: 280. (1906) | Rydberg: Bull. Torrey Bot. Club 26: 583. (1899) |
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