Botanical name: Bupleurum rupestre Family: Apiaceae (Carrot family)
Synonyms: Bupleurum nigrocarpum, Bupleurum falcatum var. afghanicum
Rock-Dwelling Thorowax is a perennial herb 20-50 cm tall, and is closely similar to Long-Stem Thorowax. Flowers are dark purple to black, in compound umbels at branch end and in leaf axils, carried on flower-cluster-stalks 3-10 cm long. Rays are 2-6, unequal, 0.5-6 cm long, bracts 1-4 per involucre, lanceshaped to ovate, 5-32 mm long. long-pointed, unequal 7-11-veined. Umbellets are 15-50 flowered, corymb-like; flower-stalks 1-4 mm long. Bracteoles are 6-10 per involucel, green, ovate-lanceshaped to oval, 5-10 mm long, long-pointed, overlapping, basally fused. The umbellets clearly separate it from Long-Stem Thorowax which has only 8-15-flowered umbellets with only 5 bracteoles per involucel. Petals are oval to obovate. Rock-Dwelling Thorowax is found in Afghanistan, Pakistan, West Himalaya, Kashmir to Uttarakhand, at altitudes of 2600-4250 m. Flowering: July-Ocober.
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