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Deden Girmansyah, Deden
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education

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Two new species of Begonia (Begoniaceae) from Bukit Tigapuluh National Park, Sumatra, Indonesia Girmansyah, Deden
REINWARDTIA Vol 13, No 3 (2012): Vol. 13 No. 3
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (592.104 KB) | DOI: 10.14203/reinwardtia.v13i3.450

Abstract

Two new species of Begonia (Begoniaceae) from Bukit Tigapuluh National Park, Sumatra, Indonesia are described. Those are Begonia triginticollium Girm. belongs to Begonia section Bracteibegonia and Begonia dolichocarpa Girm. belongs to Begonia section Petermannia.
Two new species and one new subspecies of Begonia (Begoniaceae) from Southeast Sulawesi, Sulawesi, Indonesia Girmansyah, Deden
REINWARDTIA Vol 13, No 1 (2009): Vol. 13 No. 1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v13i1.4

Abstract

Two new species and one new subspecies, of Begonia are described from the Mekongga Mountains in Southeast Sulawesi: Begonia mekonggensis Girmansyah & Wiriadinata, Begonia watuwilensis Girmansyah, and Begonia aptera Blume subsp. hirtissima Girmansyah & D.C.Thomas,. Begonia mekonggensis and Begonia watuwilensis belong to Begonia section Petermannia. Both species have characters which are very unusual amongst species in this section. Begonia mekonggensis is dioecious, and Begonia watuwilensis exhibits protandrous inflorescences with basal male flowers and several distal female flowers. Begonia aptera Blume subsp. hirtissima belongs to Begonia section Sphenanthera.
A TAXONOMIC STUDY OF BALI AND LOMBOK BEGONIA (BEGONIACEAE) Girmansyah, Deden
REINWARDTIA Vol 12, No 5 (2009): Vol. 12, No. 5
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1387.251 KB) | DOI: 10.14203/reinwardtia.v12i5.81

Abstract

GIRMANSYAH, DEDEN. 2009. A taxonomic study of Bali and Lombok Begonia(Begoniaceae). Reinwardtia 12(5): 419–434. A taxonomic study of Bali and Lombok Begonia was based on an investigation of morphological characters from 60 specimens in Herbarium Bogoriense.This study shows that there are 8 species that can be recognized: three species already in the genus (Begonia coriacea, B. longifolia, and B. tenuifolia) and five new (Begonia baliensis, B. lempuyangensis, B. pseudomuricata, B. multibracteata, and B. lombokensis).
Floristic Study of West Sumbawa, Indonesia Wiriadinata, Harry; Girmansyah, Deden; Hunter, James; Hoover, W. Scoot; Kartawinata, Kuswata
REINWARDTIA Vol 13, No 5 (2013): Vol. 13, No. 5
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (452.088 KB) | DOI: 10.14203/reinwardtia.v13i5.423

Abstract

A floristic survey was undertaken in mountains forest of West Sumbawa and some surrounding lower forests, an area of Indonesia receiving limited biological study. Three hundred sixteen species of Angiosperms and ferns were collected from this area in 2004 and 2005. The collection represents 101 families and 234 genera.
Exploration of High elevation liana colonies on Mt. Slamet, Central Java, Indonesia Hoover, WS; Girmansyah, Deden; Wiriadinata, Harry; Hunter, James M.
REINWARDTIA Vol 13, No 1 (2009): Vol. 13 No. 1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (656.43 KB) | DOI: 10.14203/reinwardtia.v13i1.433

Abstract

One hundred forty-five individual lianas were distributed on 2 East facing ridges on the second highest mountain on Java, Mt. Slamet (3418 m.), Central Java, Indonesia. Twenty one colonies were observed on small flat areas on ridges. The liana species observed include: Embelia pergamacea, Toddalia asiatica, Elaeagnus latifolia, Schefflera lucida, Vaccinium laurifolium and Lonicera javanica. Diameter of each liana was measured and liana density/flat area calculated. Floristic collecting was under- taken within the elevational gradient of liana distribution. Data suggest an ecotone transition from lower to upper mon- tane forest is observed between 2200 and 2300 m, though forest types are difficult to determine due to disturbance caused by fire at the upper elevations. Observing lianas at these unusuall high elevations with near pluvial rainfall, con- tradict established scientific theory concerning global distribution and abundance of lianas.
A NEW SPECIES OF BEGONIA (BEGONIACEAE) FROM SUMBAWA, LESSER SUNDA ISLANDS, INDONESIA GIRMANSYAH, DEDEN
REINWARDTIA Vol 15, No 2 (2016): Vol.15 No.2
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1038.087 KB) | DOI: 10.14203/reinwardtia.v15i2.2945

Abstract

GIRMANSYAH, D. 2016. A new species of Begonia (Begoniaceae) from Sumbawa, Lesser Sunda Islands, Indonesia. Reinwardtia 15(2): 115 – 118. — A new species of Begonia L. (Begoniaceae), Begonia semongkatensis Girm., is described from Sumbawa Island, Lesser Sunda Islands, Indonesia. The species belongs to Begonia section Reichenheimia. An illustration, identification key and distribution maps are provided.
VALIDASI, DISTRIBUSI DAN PEMANFAATAN ACANTHACEAE DI JAWA [Validation, Distribution and Potential uses of Acanthaceae in Java] Girmansyah, Deden
BERITA BIOLOGI Vol 13, No 1 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (173.733 KB) | DOI: 10.14203/beritabiologi.v13i1.659

Abstract

Acanthaceae published in Flora of Java has had significant change especially for nomenclature, distribution and potential uses; thus it affected species names of collections of Acanthaceae in Herbarium Bogoriense of The Indonesian Institute of Sciences. It is therefore necessary to update information of Acanthaceae by conducting herbarium and field surveys as well as reviewing related publications. Validation of the species name, synonymous and distribution were carried out by using some online websites such as IPNI, Tropicos and The plantlist. Meanwhile, the potential uses were obtained from several publications. Examinations on herbarium specimens was conducted in the Herbarium Bogoriense, while field survey was carried out in several locations in Java. This study recorded a total of 164 species of Achantaceeae to which 53 were native in Java (Indonesia), 24 species become synonymous, and five other species have not been published. Some of them have potential chemical substances and uses.
SINOPSIS Begonia LIAR DI SUMATERA BARAT [Synopsis of Wild Begonia in West Sumatra] Girmansyah, Deden
BERITA BIOLOGI Vol 16, No 3 (2017)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3492.316 KB) | DOI: 10.14203/beritabiologi.v16i3.2798

Abstract

The diversity of wild Begonia in West Sumatra is not well understood, while the habitat of Begonia has continuedly decreased by human activity or natural disaster. Therefore, some species are seriously undert hreat. Examinations of Begonia spp. were carried out using herbarium specimens from Andalas University Herbarium (ANDA), Herbarium Bogoriense (BO) and some field works in West Sumatra were conducted. A total of 33 species of Begonia were collected and identified as species level and could be used for identied Begonia species from West Sumatra.
KEANEKARAGAMAN JENIS BEGONIA (Begoniaceae) LIAR DI JAWA BARAT Girmansyah, Deden
BERITA BIOLOGI Vol 9, No 2 (2008)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1029.665 KB) | DOI: 10.14203/beritabiologi.v9i2.2028

Abstract

A taxonomic study of the wild genera of Begonia Blume {Begoniaceae) in West Java was conducted based on morphological characters. Nine known species (Begonia areolata Miq., Begonia isoptera Dryander, Begonia lepida Blume, B. longifolia Blume, B. multangula Blume, B. muricata Blume, B. repanda Blume, B. robusta Blume and B. tenuifolia Dryander) and one new species Begonia sp. was discovered. An identification key and information about potential uses of West Javas Begonia are described. Beside as ornamental plants, Begonia can be used for medicinal plant such as B. isoptera for spleen diseases.
KEKAYAAN BEGONIA TAMAN NASIONAL GUNUNG HALIMUN Wiriadinata, Harry; Girmansyah, Deden; Hoover, Scott; Hunter, James
BERITA BIOLOGI Vol 6, No 1 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (326.248 KB) | DOI: 10.14203/beritabiologi.v6i1.1174

Abstract

Begonias arc unique due to asymmetric leaves, and they have large variation on their coloration and hairiness. The flower is unisexual, male and female flowers are in separate branches.The fruit with or without wings of different size and shape.Those unique characters attract them as ornamental plants, Mts. Halimun National Park has many species of wild Begonias which can be found on the forest floor.They grow in group and have essential role in mountainous forest ecosystem. Exploration for wild Begonia within forest around Cikaniki,Cirnarasa. Koridor Cianten, Gn, Botol, Gn. Bintang Gading, Gn. Sanggabuana will be presented in this paper.
Co-Authors Decky Indrawan Junaedi Eka Fatmawati Tihurua Harry Wiriadinata, Harry Hoover, Scott Hughes, Mark James Hunter, James James M. Hunter, James M. Kuswata Kartawinata W. Scoot Hoover, W. Scoot WIDOYANTI, WIDOYANTI WS Hoover, WS