Dark-Blue Delphinium
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Dark-Blue Delphinium
P Native Unknown Photo: Maarten Van Haeren
Common name: Dark-Blue Delphinium
Botanical name: Delphinium caeruleum    Family: Ranunculaceae (Buttercup family)

Dark-Blue Delphinium is a perennial herb that can grow up to a foot tall. Flowers are borne in 1-7-flowered corymb 5-14 cm, finely velvet-hairy. Petal-like sepals are purple-blue, rarely white, below finely velvet-hairy; spur slender and tapering to a point, 1.5-2.8 cm, nearly straight or slightly recurved, base 2-3 mm in diameter; other sepals 1.2-1.9 cm. Petals are undivided, hairless. Staminode limb broadly obovate or nearly round, entire or notched, yellow barbate. Flower-stalks are 3.5-8 cm; bracteoles borne near middle of flower-stalk or distally, lanceshaped-linear, 4-10 mm. Stem is 5-80 cm tall, usually branched. Leaf blade is 0.4-12 cm wide, above densely finely velvet-hairy or velutinous, base heart-shaped; primary lobes separate for at least 90% of blade radius; central lobe rhombic or obovate-rhombic, 1-3 times dissected, distally 1- or 2-lobulate or undivided, tip rounded to pointed; ultimate lobules linear, 2-5 mm wide; proximal leaves withered or not. Dark-Blue Delphinium is found in East Himalaya, Myanmar, Nepal, China, at altitudes of 2100-5000 m. Flowering: June-October.

Identification credit: Tabish Photographed in Sikkim.

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