Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Top row: three examples of Polystachya from the pantropical tetraploid group (photos: R. Hromniak, University of Vienna Botanical Garden; left to right: P. concreta from Laos, P. masayensis from Costa Rica and P. concreta from Réunion). Bottom row: three examples of plants from the Malagasy endemic tetraploid group (photos: A. Sieder, University of Vienna Botanical Garden; left to right: P. tsaratananae, P. clareae and P. monophylla).
