Botanical name: Hypericum choisianum Family: Hypericaceae (St John's Wort family)
Choisy's St Johns Wort is a long-flowering, 0.3-2 m tall, evergreen, shrub native to the Himalayan region from Pakistan to Burma. Stems spreading; branches 4-lined and flattened at first, eventually terete. Leaves on 2-4 mm long stalks, are 2.5-8.8 cm long, 1-4.2 cm broad, ovate to lanceshaped or oblong-lanceshaped, apex acute or apiculate to rounded, base broadly cuneate to rounded, venation rather densely to scarcely reticulate. Flowers are borne in 1(2-7)-flowered corymb-like cymes. Flowers are 4-7 cm in diameter. Sepals are 7-18 mm long or sometimes longer and foliaceous, narrowly elliptic or lanceolate to broadly ovate or very broadly elliptic, acute to apiculate or more rarely obtuse, entire, spreading or ascending in bud and fruit. Petals are obovate, 1.6-3 cm long, 2.5-3 x longer than the stamens. Stamens are 60-80 in each fascicle. It is found in the Himalayas at altitudes of 1800-3600 m.
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The flower labeled Choisy's St Johns Wort is ...