Oldenlandia pumila (L. fil.) DC.

Oldenlandia crystallina Roxb. Fl. Ind. 2: 443. 1824
Annual, 5-8 cm. high, diffusely branched, the branches stout, angulate, scaberulous, the internodes shorter than the leaves; stipules about 1 mm. long, bicuspidate; petioles stout, 1-3 mm. long; leaf blades elliptic or lance-elliptic, 6-17 mm. long, 2.5-6 mm. wide, acute or obtuse at the apex, acute or obtuse at the base, thin, dark-green above and sparsely scaberulous, paler beneath and scaberulous along the costa, the lateral veins obsolete, the margins scaberulous; flowers axillary, solitary, or rarely on 2-flowered peduncles, the pedicels slender, 5 mm. long or shorter; hypanthium 1 mm. long, glabrous, the calyx-lobes about as long, triangularlanceolate, acuminate, ciliolate, approximate and somewhat accrescent in fruit; corolla salverform, about equaling the calyx-lobes, white; capsule obovoid, 2.5 mm. long, shallowly bisulcate, angulate, glabrous; seeds minute, subangulate, blackish-brown.
Type locality: Bengal.
Distribution: Adventive in Jamaica; native of India and the East Indies.

Oldenlandia pumila là một loài thực vật có hoa trong họ Thiến thảo. Loài này được (L.f.) DC. mô tả khoa học đầu tiên năm 1830.