Robert Lücking,^1,* Ba Vuong Truong,² Dang Thi Thu Huong,³ Ngoc Han Le,³ Quoc Dat Nguyen,⁴ Van Dat Nguyen,⁵ Eckhard Von Raab-Straube,¹ Sarah Bollendorff,¹ Kim Govers,¹ Vanessa Di Vincenzo<sup>1

1</sup>1 Botanischer Garten und Botanisches Museum, Freie Universität Berlin, Königin-Luise-Straße 6–8, 14195 Berlin, Germany
²2 Institute of Tropical Biology, Department of Biological Resources, Vietnam Academy of Science and Technology, 85 Tran Quoc Toan St., District 3, Ho Chi Minh City, Vietnam.
³3 Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam.
⁴4 Southern Institute of Ecology, Vietnam Academy of Science and Technology, 01 Mac Dinh Chi, Ben Nghe, District 1, Ho Chi Minh City, Vietnam.
⁵5 Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam.

^*e-mail: r.luecking@bgbm.org (author for correspondence).