1. College of Science; University of Santo Tomas; Espaú Boulevard, 1015 Manila Philippines
2. Research Center for the Natural Sciences; University of Santo Tomas; Espaú Boulevard, 1015 Manila Philippines
3. Department of Plant Systematics; University of Bayreuth; Universitátstr. 30, Bayreuth 95440 Germany
4. UFR Sciences et Techniques; Université de Franche-Comté - CNRS UMR 6249 Chrono-environnement; 16 Route de Gray, BesanÇon cedex 25030 France
5. Botany Department; Museum of Natural History Stuttgart; Rosenstein 1, Stuttgart 70191 Germany