Botanical name: Roscoea megalantha    Family: Zingiberaceae (Ginger family)
Synonyms: Roscoea purpurea f. alba

Arunachal Kakoli Ginger is a perennial herb, 15-45 cm tall including underground pseudostem 7-15 cm long, closely similar to to the West Himalayan Kakoli Ginger. It differs from the latter in the following characteristics. Flowers are white with purple markings on the lip, whereas in Kakoli Ginger flowers are usually purple to palest purple. Flowers are only half enclosed in the leaf sheaths, whereas in Kakoli Ginger they are enclosed. The lip is lobed differently in the two. Sheathing leaves, leaves and bracts6–8 in all. Sheathing leaves are 2-4, mostly membranous, tip leafy and recurved except lowest one. Leaf blades are 3-6, rising up or spreading, elliptic to oblong-lanceshaped, 5-18 x 1.3-3.5 cm, hairless, base eared except uppermost one, margin wavy, tip tapering; leaf sheath striped. Arunachal Kakoli Ginger is known from Eastern Bhutan and adjacent western Arunachal Pradesh, at altitudes of 1800-3500 m.

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The flower labeled Arunachal Kakoli Ginger is ...