Lysimachia pterantha Hemsl.

Herbs perennial, to 90 cm. Stems erect, elongate, becoming arching to reclining, shortly branched, initially with rust-colored multicellular hairs, glabrate. Leaves opposite; petiole 3--10 mm, rust-colored pubescent; leaf blade lanceolate, 3--7 X 1--2 cm, abaxially sparsely pubescent, becoming glabrescent, except on veins, obscurely brown or black glandular striate, adaxially glabrous, base rounded, apex acute to acuminate; veins 3 or 4 pairs; veinlets inconspicuous. Pedicel 1--1.5 cm, rust-colored pubescent. Flowers solitary, axillary. Calyx lobes lanceolate, 5--6 mm, abaxially cristate; crest widest at base (ca. 2 mm), glabrous, brown glandular striate. Corolla yellow; tube ca. 2 mm; lobes lanceolate, 7--8 X 2.5--3 mm, sparsely brown glandular striate, apex acute. Filaments connate basally into a ca. 2 mm high tube, free parts 4--5 mm; anthers oblong, dorsifixed, opening by lateral slits, ca. 1.2 mm. Ovary glabrous; style ca. 5 mm. Capsule unknown. Fl. May-Jun.

* Grassy mountain slopes. E Sichuan.

Lysimachia pterantha là một loài thực vật có hoa trong họ Anh thảo. Loài này được Hemsl. mô tả khoa học đầu tiên năm 1889.

翅萼过路黄（学名：Lysimachia pterantha）为报春花科珍珠菜属的植物，为中国的特有植物。分布于中国大陆的四川等地，生长于海拔1,100米至2,100米的地区，常生于山坡及路边草丛中，目前尚未由人工引种栽培。