REINWARDTIA 2021 20 (1) ISSN 0034 – 365 X | E-ISSN 2337 − 8824 | Accredited 10/E/KPT/2019 A JOURNAL ON TAXONOMIC BOTANY, PLANT SOCIOLOGY AND ECOLOGY REINWARDTIA A JOURNAL ON TAXONOMIC BOTANY, PLANT SOCIOLOGY AND ECOLOGY Vol. 20 (1): 1 – 41, July 07, 2021 Chief Editor Kartini Kramadibrata (Mycologist, Herbarium Bogoriense, Indonesia) Editors Dedy Darnaedi (Taxonomist, Herbarium Bogoriense, Indonesia) Tukirin Partomihardjo (Ecologist, Herbarium Bogoriense, Indonesia) Joeni Setijo Rahajoe (Ecologist, Herbarium Bogoriense, Indonesia) Marlina Ardiyani (Taxonomist, Herbarium Bogoriense, Indonesia) Himmah Rustiami (Taxonomist, Herbarium Bogoriense, Indonesia) Lulut Dwi Sulistyaningsih (Taxonomist, Herbarium Bogoriense, Indonesia) Eka Fatmawati Tihurua (Morphologist, Herbarium Bogoriense, Indonesia) Topik Hidayat (Taxonomist, Indonesia University of Education, Indonesia) Eizi Suzuki (Ecologist, Kagoshima University, Japan) Jun Wen (Taxonomist, Smithsonian Natural History Museum, USA) Barry J. Conn (Taxonomist, School of Life and Environmental Sciences, The University of Sydney, Australia) Graham Eagleton (Wagstaffe, NSW, Australia) Layout Liana Astuti Illustrators Wahyudi Santoso Anne Kusumawaty Correspondence on editorial matters and subscriptions for Reinwardtia should be addressed to: HERBARIUM BOGORIENSE, BOTANY DIVISION, RESEARCH CENTER FOR BIOLOGY– INDONESIAN INSTITUTE OF SCIENCES CIBINONG SCIENCE CENTER, JLN. RAYA JAKARTA – BOGOR KM 46, CIBINONG 16911, P.O. Box 25 CIBINONG INDONESIA PHONE (+62) 21 8765066; Fax (+62) 21 8765062 E-MAIL: reinwardtia@mail.lipi.go.id http://e-journal.biologi.lipi.go.id/index.php/reinwardtia Cover images: Begonia robii Ardi & Girm. A. Plant habit. B. Stipules. C. Bracts. D. Inflorescence. E. Male flower, front view. F. Male flower, side view. G. Female flower, front view. H. Female flower, side view. I. Fruit. J. Ovary, cross section of middle part. From Wisnu Ardi WI 761. Photos by W.H. Ardi. http://blog.sivitas.lipi.go.id/ekaf001/ The Editors would like to thank all reviewers of volume 20(1): Andrew J. Henderson, The New York Botanical Garden, New York, USA Badal Kumar Datta, Tripura University, Agartala, India Chien C. Lee, Kuching, Sarawak, Malaysia Daniel C. Thomas, Singapore Botanic Gardens, Singapore Ren-Yong Yu, Naturalis Biodiversity Center, Leiden, The Netherlands Roderick W. Bouman, Hortus Botanicus, Leiden, The Netherlands Rugayah, Herbarium Bogoriense, Bogor, Indonesia Shih-Hui Liu, National Sun Yat-Sen University, Kaohsiung, Taiwan