Botanical name: Spermacoce remota Family: Rubiaceae (Coffee family)
Synonyms: Borreria remota, Borreria vaginata, Spermacoce suffruticosa
Woodland Buttonweed is a perennial herb, or subshrubs, rising up to erect, up to 65 cm tall; stems nearly round to somewhat 4-angled, grooved and/or ridged, hairless or ciliolate on angles. Leaves are stalkless to stalked; leaf-stalk up to 3 mm, blade drying papery, narrowly elliptic to lanceshaped, 1.0-4.5 cm long, 4-16 mm wide, finely velvet-hairy to becoming hairless, base pointed to wedge-shaped, tip pointed; secondary veins 2 or 3 pairs. Flowers are borne at branch-ends and in uppermost leaf axils, in compact many flowered clusters 5-12 mm in diameter, bracts numerous, thread-like, 0.5-1 mm. Sepals are 4, narrowly triangular to linear, 0.8-1 mm. Flowers are white, funnel-shaped, outside hairless or finely velvet-hairy on lobes; tube 0.5-1.5 mm, velvet-hairy in throat; lobes triangular, 1-1.5 mm. Capsules are ellipsoid, weakly to strongly flattened at right angles to septum, 1.8-2 x 1-1.2 mm. Woodland Buttonweed is native to Central and South America, naturalized in disturbed wet sites in India below 100-300 m. Flowering: June-January.
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The flower labeled Woodland Buttonweed is ...