Yellowseed Lindernia
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Yellowseed Lindernia
A Naturalized Photo: Ankush Dave
Common name: Yellowseed Lindernia
Botanical name: Lindernia dubia    Family: Linderniaceae (Lindernia family)
Synonyms: Lindernia macrantha, Lindernia pyxidaria, Lindernia anagallidea

Yellowseed Lindernia is an annual, stout, erect or sometimes rising up herb, rooting at the lower nodes. Flowers are borne singly in leaf-axils, on slender 4-angled flower-stalks, sparsely glandular hairy, 7-12 mm long; equalling or longer than the subtending leaves. Fruiting flower-stalks are stiff, erect or horizontal. Sepal-cup is deeply 5-lobed, 3-5 mm long, linear or lanceshaped, tip pointed, sparsely glandular hairy when young. Flowers are 6-7 mm long, white, occasionally with pale purple spots, tube 4.5-5 mm long; upper lip 1.5 mm long, slightly notched at the tip; lower lip distinctly 3-lobed, lobes rounded. Perfect stamens are 2, filaments 1 mm long, hairless; anthers 2-lobed, coherent below the upper lip. Staminodes are 2, 1 mm long. Style is 2.5-3 mm long; stigma 2-lamellate. Stem is four-edged, hairless, much branched near base. Leaves are stalkless, basal ones larger, smaller towards tip, 0.5-2.5 x 0.2-1.5 cm, ovate or ovate-elliptic, upper ones narrowly ovate to lanceshaped, 3-5 veined from base, veins distinct on lower larger leaves, base wedge-shaped-narrowed or rounded, tip pointed to tapering, occasionally blunt, margin entire or shallowly 2-3 toothed, largest leaves near base. Capsule is 4-5 x 1.7-2 mm, ellipsoid or obliquely ellipsoid, blunt to pointed at tip, hairless, equalling or slightly longer than persistent sepal-cup. Seeds are 0.3-0.4 x 0.1-0.2 mm, ellipsoid or slightly bent, golden yellowish, longitudinally ridged. Yellowseed Lindernia is native to the American continents, naturalized in India and elsewhere. Flowering: July-December.

Identification credit: J.M. Garg Photographed in Agra, Uttar Pradesh.

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