Botanical name: Bupleurum hamiltonii    Family: Apiaceae (Carrot family)

South-Asian Thorowax is an annual herb 50-100 cm tall, with stem tinged purple, much branched throughout, branches slender, rising up, base without fibrous remnant sheaths. Leaves are stalkless, oblong-lanceshaped or linear, 3-8 x 0.4-0.8 cm, 7-9-nerved, base slightly narrow. Inflorescence is profusely branched, umbels numerous, small, 1-2 cm across, lax; bracts 2-4, lanceshaped or elliptic, 3-6 x 1-2 mm, unequal, 5-7-nerved. Rays are 2-5-7, 0.5-2 cm, unequal, very slender; bracteoles 5, lanceshaped or elliptic, 3-4 x 1-1.5 mm, equal, tip with a sharp point, equaling or slightly longer than flowers. Umbellules are 1-1.3 mm across, 5-11-flowered; flower-stalks 0.5-1.5 mm. Petals are yellow-green, nearly round. South-Asian Thorowax is found in the Himalayas, from Kashmir to Bhutan, NE India, S. China and N. Indo-China, at altitudes of 1300-3200 m. Flowering: August-October.

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The flower labeled South-Asian Thorowax is ...