Shaggy Buttonweed
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Shaggy Buttonweed
P Native Photo: Gary Thingnam
Common name: Shaggy Buttonweed
Botanical name: Spermacoce hispida    Family: Rubiaceae (Coffee family)
Synonyms: Spermacoce rigida, Spermacoce mutilata, Spermacoce carolinensis

Shaggy Buttonweed is a annual or perennial herb, prostrate to weakly rising up, up to 50 cm tall; stems round to usually markedly quadrate, hairless to finely velvet-hairy or pilosulous on sides, angles cartilaginous to winged, wings to 0.1 mm wide, ciliolate, bristlyulous, or fringed with hairs. Leaves are stalkless to shortly stalked; leaf-stalk up to 4 mm, hirtellous throughout or ciliolate in lines; blade drying papery to leathery, oblong-elliptic, obovate, or spoon-shaped, 10-30 x 5-15 mm, both surfaces hirtellous to scaberulous, bristlyulous, and/or hairy, base wedge-shaped to blunt and usually long decurrent, margin scaberulous or ciliolate and often curled, tip pointed, blunt, or rounded; secondary veins 2-4 pairs or not visible. Flowers are borne in leaf-axils, in clusters 0.5-1.5 cm in diameter, with 1-6 flowers per axil; bracts linear or infrequently stipule-like, 1-5 mm. Sepal-cup is finely velvet-hairy to hirtellous or scaberulous; hypanthium portion ellipsoid, 0.8-1 mm; lobes 4, linear-lanceshaped to narrowly triangular, 1-1.5 mm, ciliolate or fringed with hairs. Flowers are pink, purple, or white, funnel-shaped, outside hairless or bristlyulous to pilosulous on upper part; tube 2.5-4.5 mm, hairless in throat; petals elliptic-oblong, lanceshaped, or triangular, 1-1.8 mm. Capsules are ellipsoid to nearly spherical, sometimes weakly flattened perpendicular to septum, 2.5-5 x 2.5-3.5 mm, finely velvet-hairy, hirtellous, pilosulous. Shaggy Buttonweed is found in India, Himalayas, Indonesia, Malaysia, Philippines, Sri Lanka, Vietnam, Australia. Flowering: March-December.

Identification credit: Tabish Photographed in Imphal, Manipur.

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