1. Key Laboratory for Bio-resources and Eco-environment, College of Life Sciences, Sichuan Univ.; CN-610065 Chengdu Sichuan P. R. China
2. Botanic Garden, Univ. of Valencia.; C/ Quart, 82 ES-46008 Valencia Spain
3. Key Laboratory of Protection and Development Utilization of Tropical Crop Germplasm Resources, Ministry of Education and College of Horticulture and Landscape Architecture, Hainan Univ.; CN-570228 Haikou Hainan P. R. China
4. Botanic Inst. of Barcelona (IBB-CSIC-ICUB); Passeig del Migdia, s/n 08038 Barcelona Spain