Lysimachia laxa - Lax Loosestrife

Lax Loosestrife is an erect herb up to 60 cm tall, with numerous fibrous roots. Flowers arise solitary in axils of medial and upper leaves, on 2-4 cm long flower-stalks. They are yellow, 6-8 mm, deeply parted; tube about 2 mm; petals elliptic-obovate, tip blunt. Filaments fused basally into a about 0.5 mm high ring, free parts about 2.3 mm, flattened; anthers 2.5-3 mm. Style is about 3 mm. Sepals are ovate-elliptic, 3-4 mm, margin somewhat membranous, often stalked glandular, tip tapering. Stems are distinctly four-edged, up to 7 mm in diameter, woody at base, usually many branched. Leaves are alternate, nearly stalkless or leaf-stalk up to 1 cm; leaf blade lanceshaped to elliptic-lanceshaped, 3-11 x 0.5-2.8 cm, tapering to both ends, below hairless, minutely brownish glandular, above; midvein and veins prominent. Capsule is slightly depressed-spherical, about 5 mm in diameter, 5-valved to base. Lax Loosestrife is found in mixed forests, at altitudes of 1000-2100 m, from East Himalaya to China (Yunnan) and Indo-China, Sri Lanka, Sumatera to Lesser Sunda Islands.