Osbeckia aspera

commonly known as: rough osbeckia, rough small-leaved spider flower • Malayalam: കാട്ടുകദളി kaattukadali • Tamil:காட்டுக்கடலை kattu-k-kadalai 

Erect shrubs; branchlets more or less pubescent with appressed to spreading hairs. Leaves 3.5-9 x 1.5-3.2 cm, elliptic-lanceolate, base attenuate, acute to shortly acuminate at apex, basally 5-ribbed, more or less pubescent with appressed short hairs on both sides, drying yellowish-green; petiole to 1 cm long. Flowers c. 2 cm across, in terminal cymes, sometimes elongated clusters, pentamerous. Calyx tube 6-8 mm long, c. 5 mm wide, cupular, with dense short bristle-like hairs; lobes 5, oblong, obtuse. Petals 5, pink, 1-1.5 x 0.8-1 cm, ovate, apex rounded. Stamens 10; anthers 5-6 mm long. Ovary hairy at apex; style exserted, 1.25-1.5 cm long; stigma curved, papillate. Capsules 0.8-1 x 0.6-0.7 cm, ovoid, ribbed. Seeds many.