INSTRUCTION TO AUTHORS Scope. Reinwardtia is a scientific regular journal on plant taxonomy, plant ecology and ethnobotany published in June and December. Manuscript intended for a publication should be written in English. Titles. Titles should be brief, informative and followed by author’s name and mailing address in one- paragraphed. Abstract. English abstract followed by Indonesian abstract of not more than 250 words. Keywords should be given below each abstract. Manuscript. Manuscript is original paper and represent an article which has not been published in any other journal or proceedings. The manuscript of no more than 36 pages by using Times New Roman 11, MS Word for Windows of A4 with double spacing, submitted to the editor through . New paragraph should be indented in by 5 characters. For the style of presentation, authors should follow the latest issue of Reinwardtia very closely. Author(s) should send the preferred running title of the article submitted. Every manuscript will be sent to two blind reviewers. Identification key. Taxonomic identification key should be prepared using the aligned couplet type. Nomenclature. Strict adherence to the International Code of Nomenclature is observed, so that taxonomic and nomenclatural novelties should be clearly shown. English description for new taxon proposed should be provided and the herbaria where the type specimens area deposited should be presented. Name of taxon in taxonomic treatment should be presented in the long form that is name of taxon, author’s name, year of publication, abbreviated journal or book title, volume, number and page. Map/line drawing illustration/photograph. Map, line drawing illustration, or photograph preferably should be prepared in landscape presentation to occupy two columns. Illustration must be submitted as original art accompanying, but separated from the manuscript. The illustration should be saved in JPG or GIF format at least 350 pixels. Legends or illustration must be submitted separately at the end of the manuscript. References. Bibliography, list of literature cited or references follow the Harvard system as the following examples. Journal : KRAENZLIN, F. 1913. Cyrtandraceae novae Philippinenses I. Philippine Journal of Science 8: 163– 179. MAYER, V., MOLLER, M., PERRET, M. & WEBER, A. 2003. Phylogenetic position and generic differentiation of Epithemateae (Gesneriaceae) inferred from plastid DNA sequence data. American Journal of Botany 90: 321–329. Proceedings : TEMU, S. T. 1995. Peranan tumbuhan dan ternak dalam upacara adat “Djoka Dju” pada suku Lio, Ende, Flores, Nusa Tenggara Timur. In: NASUTION, E. (Ed.). Prosiding Seminar dan Lokakarya Nasional Etnobotani II. LIPI & Perpustakaan Nasional. Pp. 263–268. (In Indonesian). SIMBOLON, H. & MIRMANTO, E. 2000. Checklist of plant species in the peat swamp forests of Central Kalimantan, Indonesia. In: IWAKUMA, T., INOUE, T., KOHYAMA, T., OSAKI, M., SIMBOLON, H., TACHIBANA, H., TAKAHASHI, H., TANAKA, N. & YABE, K. (Eds.). Proceedings of the International Symposium on: Tropical Peatlands. Pp. 179 ‒ 190. Book : RIDLEY, H. N. 1923. Flora of the Malay Peninsula 2. L. Reeve & Co. Ltd, London. Part of Book : BENTHAM, G. 1876. Gesneriaceae. In: BENTHAM, G. & HOOKER, J. D. (Eds.). Genera Plantarum 2. Lovell Reeve & Co., London. Pp. 990–1025. Thesis : BAIRD, L. 2002. A Grammar of Kéo: An Austronesian Language of East Nusantara. Australian National University, Canberra. [PhD. Thesis]. Website : http://www.nationaalherbarium.nl/fmcollectors/k/KostermansAJGH.html. (Accessed 15 February 2012). http://www.nationaalherbarium.nl/fmcollectors/k/KostermansAJGH.htm REINWARDTIA Author Agreement Form Title of article : Name of Author(s) : I/We hereby declare that: • My/Our manuscript was based on my/our original work. • It was not published or submitted to other journal for publication. • I/we agree to publish my/our manuscript and the copyright of this article is owned by Reinwardtia. • We have obtained written permission from copyright owners for any excerpts from copyrighted works that are included and have credited the sources in our article. Author signature (s) Date ___________________________________________________________________________________________ Name Reinwardtia Published by Herbarium Bogoriense, Botany Division, Research Center for Biology, Indonesian Institute of Sciences Address: Jln. Raya Jakarta-Bogor Km. 46 Cibinong 16911, P.O. Box 25 Cibinong Telp. (+ 62) 21 8765066; Fax (+62) 21 8765062 Email: reinwardtia@mail.lipi.go.id REINWARDTIA Vol. 20. No. 1. 2021 CONTENTS MEGA ATRIA & PETER C. VAN WELZEN. The Calamus javensis (Arecaceae: Calamoideae) complex in historical biogeographic context ………………………………………………………………………………………………….. 1 IAN M. TURNER. An updated synopsis of Ludwigia (Onagraceae) in Malesia .….………………..………………... 9 MALCOLM VICTORIANO. A new species of Nepenthes (Nepenthaceae) and its natural hybrids from Aceh, Sumatra, Indonesia .………………………………………………………………………………………………………………. 17 SREEHARI S. NAIR, K. H. AMITHA BACHAN & P. J. EBIN. Diversity and phenetic study on syconium of Ficus L. (Moraceae) from Kerala, India revealing natural classification along with an identification key …………………….. 27 WISNU H. ARDI, DEDEN GIRMANSYAH & MARK HUGHES. Begonia robii, a new species of Begonia from Lima Puluh Kota, West Sumatra ……………………………………………………………………………………………... 37 Reinwardtia is an accredited Journal (10/E/KPT/2019) http://e-journal.biologi.lipi.go.id/index.php/reinwardtia 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