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Acanthus volubilis Wall.
The plant is a twining herb/shrub, attaining height upto 4 m much branched Tap root system developed, and sometimes stilt roots are also found Leaves simple, opposite decussate, exstipulate, petiolate, petiole 1.0 cm long, slightly flattened, glabrous, solid, pulvinose, green Lamina oblong-lanceolate, entire, blunt, angled, dorsiventral, succulent, green, unicostate reticulate venation Inflorescence raceme Flowers ebracteate, sessile, complete, bisexual, irregular Sepals 4, polysepalous, mixed sized, green, glabrous, leathery, curved, entire, acute, superior Petals 5, polypetalous, fused to form single plate, base fused to form hollow short tube, while apex flattened to form 5 short lobes Stamens 4, free, arranged in same whorl, equal size, filament introse, inserted, basifixed, flattened Carpels 2, syncarpous, ovary superior, dumeble shaped, green, two chambered, one ovule in each chamber, axile placentation Style 1, terminal, white, terete, Stigma absent Unarmed glabrous twining shrub upto 8 m
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