sentences:  The type species for the genus was "Helicia cochinchinensis", the type specimen of which was collected in Cochinchina, Vietnam.The genus name derives from the Greek word "" (élix), which refers to the petals, now called tepals, spirally revolving or simply rolling or coiling up on themselves, at anthesis (the flowering time when the anthers open).In 1831, botanist Nathaniel Wallich named "Helicia robusta" for a dried specimen of a cultivated plant in India, based on the specimen's earlier 1814 name "Roupala robusta" by William Roxburgh.