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.
Identification credit: Preetha P.S.
Photographed in Kollam, Kerala.
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The flower labeled Woodland Buttonweed is ...