Botanical name: Lysimachia debilis Family: Primulaceae (Primrose family)
Weak Loosestrife is a perennial herb, 15--30 cm tall. Stems rise up, usually branched from base, with multicellular hairs. Leaves are opposite; leaf-stalk 4--8 mm, narrowly winged; leaf blade ovate, 1.5-2.8 x 1-1.6 cm, bristly, minutely reddish glandular dotted, base wedge-shaped to subrounded, tip pointed. Flower-stalks are 2-4 mm, densely velvet-hairy. Flowers are yellow, borne singly in leaf-axils. Sepals are lanceshaped, about 7 mm, enlarging to 1 cm in fruit, densely velvet-hairy and reddish glandular dotted, tip tapering-subulate. Flower tube is about 2 mm, petals ovate-oblong, about 6 x 2.5-3 mm, sparsely red glandular, tip pointed. Filaments are fused basally into a about 1 mm tube, free parts 2.5-3.5 mm; anthers ovate, dorsifixed, opening by lateral slits, about 1 mm. Ovary velvet-hairy; style about 4 mm. Capsules are nearly spherical, about 4 mm in diameter. Weak Loosestrife is found in the Himalayas, from Kashmir to NE India, Burma, at altitudes of 1200-2900 m. Flowering: June.
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The flower labeled Weak Loosestrife is ...