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East-Himalayan Blue Corydalis
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East-Himalayan Blue Corydalis
P Native Unknown Photo: Ed Shaw
Common name: East-Himalayan Blue Corydalis, Crestless Corydalis • Chinese: 无冠紫堇 Wu guan zi jin
Botanical name: Corydalis ecristata    Family: Papaveraceae (Poppy family)
Synonyms: Corydalis cashmeriana var. ecristata, Corydalis cashmeriana var. brevicornu

East-Himalayan Blue Corydalis is a perennial herb, 5-10 cm above soil surface; stems and leaf-stalks of radical leaves are narrowed to thread-like underground base. Flowers are clear blue, inner petals pale but darker at tip; upper petal narrowly boat-shaped, 1.3-1.9 cm, somewhat pointed, crest narrow or absent. Spur is straight or downcurved at tip, cylindric, 6-11 mm; nectary about 2/3 as long as spur; lower petal 1-1.3 cm, claw distinct, 4-5 mm, limb round, much surpassing upper petal, 7-10 mm wide, tip flat; inner petals 7-9 mm. Flower-stalk 8-25 mm, thin, erect in fruit, sepals minute. Flowers are borne in umbel-like raceme, 1-3 cm, 2-6-flowered, not elongating in fruit; bracts 8-13 mm, deeply cut into 3-13 linear lobes. Stems are erect, thin, simple, with 1 leaf in upper 1/3, or leaf lacking. Radical leaves are few; leaf-stalk 2-6 cm, thin; blade 6-15 x 8-15 mm, bi-(tri-)ternate, primary leaflets petiolulate, ultimate leaflets stalkless, deeply divided into obovate to elliptic lobes. Stem leaf stalkless. East-Himalayan blue corydalis is found on mossy rocks, fine scree, at altitudes of 4000-5000 m, in NE Nepal to NW Arunachal Pradesh and S Tibet. Flowering: June-September.

Identification credit: Ed Shaw Photographed in Sela Pass, Arunachal Pradesh.

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