Common name : Redstem, eared
Common name in Hindi : Dadmari
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Ecology and distribution
Flowers from January to March and fruits from February to June.
Ammannia octandra was reported from Indian peninsula, Sri Lanka, Chittagong in Bangladesh and Malaysia.
This species is found in plains, especially towards the coast, in low-lying moist areas, fallow fields and as a weed in paddy fields.
Robust herbs up to 50cm high.
Oblong-lanceolate, 4.5cm long and 0.7cm wide, chartaceous, glabrous, base auriculate-subcordate, margin entire, apex acuminate.
Cymes simple, axillary; pedicel to 1mm. Flowers 7mm across, calyx-tube 4mm, angular, margins sharp; lobes 4, 1mm. 4 petals, flame-coloured, with a darker midnerve, orbicular, 4mm, fugacious, crumpled. Stamens 4+4, inserted at different levels on calyx-tube; filaments to 6mm. Ovary 1.5mm, 4-celled; style 5mm.
Capsule 4.5mm, equalling the thick clayx-tube.
- Matthew, K.M., 1983. The Flora of the Tamil Nadu Carnatic. The Rapinat Herbarium, Tiruchirapalli, India.
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