Acmella ciliata - Fringed Pod Toothache Plant

Fringed Pod Toothache Plant is a perennial gerb, 30-80 cm tall. Stems are usually prostrate to rising, rooting at nodes, green to purple. Leaves are ovate to broadly ovate, 2.3-7.5 × 1-5.9 cm, hairless to sparsely hairy on both surfaces, base usually flat or heart-shaped, margin toothed to coarsely toothed, tip pointed. Flower-heads are flat, solitary or 2 or 3, at branch ends or in leaf axils. Stalks are 1-7.4 cm, sparsely to moderately hairy. Phyllaries are 7-10, 2-seriate. The cup holding the flower-head is 3.8-7.4 × 0.8-1.9 mm. Ray florets are 5-10, yellow-orange, 2.5-6.5 mm, tube 0.9-2 mm, lamina 1.2-4.7 × 1.1-3 mm. Disk florets are 90-177, yellow-orange, 5-lobed, 1.5-2 mm, tube 0.3-0.6 mm, throat 1-1.5 mm, lobes triangular, 0.2-0.4 × 0.2-0.3 mm. Seed-pods are black, 1.4-2.2 × 0.5-1 mm, without shoulders, with obvious corklike margin, margin sparsely to moderately ciliate. Pappus is usually absent or sometimes of 2 very short bristles. Fringed Pod Toothache Plant is native to South America, widely naturalized in S and SE Asia. Flowering: all year.