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Delphinium xantholeucum

Delphinium xantholeucum Piper  
Family: Ranunculaceae
Yellow-White Larkspur
Delphinium xantholeucum image
  • FNA
  • Resources
Michael J. Warnock in Flora of North America (vol. 3)
Stems 40-60(-100) cm; base often reddish, glabrous, ± glaucous. Leaves basal and cauline; basal leaves usually absent at anthesis; cauline leaves 4-6 at anthesis; petiole 0.8-16 cm. Leaf 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. 2 n = 16.

Flowering spring. Slopes in open yellow pine forests, grasslands; sage scrub; of conservation concern; 150-600 m; Wash.

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

Delphinium xantholeucum
Open Interactive Map
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
Delphinium xantholeucum image
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This project was made possible in part by the Institute of Museum and Library Services [MG-70-19-0057-19].

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