The genetic closeness of various species of Vanda was determined using rand
om amplified polymorphic DNA (RAPD). Strap-leaved Vanda species (including
Vanda sanderiana) and Ascocentrum miniatum were more closely related to eac
h other than to the terete-leaved Vanda species studied. RAPD analysis supp
orts the suggestion that terete-leaved Vanda teres and Vanda hookeriana be
classified in the separate genus Papilionanthe and that Vanda sanderiana sh
ould remain in the genus Vanda. (C) 1999 Annals of Botany Company.