FIGURE 1. Parahellenia trongduyii. A. Rhizome with a terminal bud. B. Leafy shoot. C. Nodes with leaf bases. D in Taxonomic studies on Parahellenia (Costaceae) in Vietnam: a new species, P. trongduyii, and a new combination, P. candida

FIGURE 1. Parahellenia trongduyii. A. Rhizome with a terminal bud. B. Leafy shoot. C. Nodes with leaf bases. D. Node with an axillary bud. E. Inflorescence with flowers. F. Bract, bracteole, ovary and calyx. G. Flower. H. Flower (calyx, corolla lobes and labellum removed). I. Longitudinal section of a flower. J. Corolla lobes (abaxial and adaxial views). K. Stamen and labellum. L. Longitudinal sections of a fruit. M. Stamen (abaxial and adaxial views). N. Stamen (lateral view). O. Stigma (from left to right: lateral view, abaxial view and adaxial view). Drawn by Mr. D.H. Cui from the type V.C. Nguyen & V.K. Nguyen CD 01.