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All Journal REINWARDTIA BERITA BIOLOGI Format : Jurnal Imiah Teknik Informatika Reinwardtia
Deden Girmansyah
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Education Immunology & microbiology

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BEGONIA ROBII, A NEW SPECIES OF BEGONIA FROM LIMA PULUH KOTA, WEST SUMATRA Wisnu Handoyo Ardi; Deden Girmansyah; Mark Hughes
REINWARDTIA Vol 20, No 1 (2021): Vol. 20 No. 1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v20i1.4141

Abstract

ARDI. W.H., GIRMANSYAH, D. & HUGHES, M. 2021. Begonia robii, a new species of  Begonia from Lima Puluh Kota, West Sumatra. Reinwardtia 20(1): 37–41. — A new species of Begonia sect. Jackia (Begoniaceae), B. robii Ardi & Girm., is described from West Sumatra and is a limestone karst endemic in the Tanah Datar dan Lima Puluh Kota Regency. Its provisional IUCN threatened category is considered to be Endangered. 
Two new species and one new subspecies of Begonia (Begoniaceae) from Southeast Sulawesi, Sulawesi, Indonesia Deden Girmansyah
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 NEW SPECIES OF BEGONIA (BEGONIACEAE) FROM SUMBAWA, LESSER SUNDA ISLANDS, INDONESIA DEDEN GIRMANSYAH
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 | 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.
BEGONIA TANGGAMUSENSIS, A NEW SPECIES OF BEGONIA SECT. PLATYCENTRUM FROM GUNUNG TANGGAMUS, SUMATRA AND NOTES ON ALLIED SPECIES BEGONIA SCOTTII AND BEGONIA PSEUDOSCOTTII MARK HUGHES; DEDEN GIRMANSYAH
Reinwardtia Vol. 23 No. 1 (2024)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/reinwardtia.2024.4772

Abstract

A new species, Begonia tanggamusensis Girm. & M.Hughes (§ Platycentrum), is described from Gunung Tanggamus in southern Sumatra, where it is endemic. It grows on moss covered rocks and at the base of large trees in montane forests at an elevation of 1,700–2,000 m. A provisional conservation assessment places the species in the Near Threatened category.
LEAF ANATOMICAL ADAPTATION OF EXOTIC INVASIVE MICONIA CRENATA (VAHL.) MICHELANG ALONG ALTITUDINAL GRADIENT: A CASE STUDY OF MOUNT GEDE PANGRANGO NATIONAL PARK, WEST JAVA, INDONESIA DECKY INDRAWAN JUNAEDI; EKA FATMAWATI TIHURUA; WIDOYANTI WIDOYANTI; DEDEN GIRMANSYAH
Reinwardtia Vol. 23 No. 1 (2024)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/reinwardtia.2024.4755

Abstract

Miconia crenata is a widely spread species that occurs in multiple ecosystems. However, there is limited information on M. crenata invasion biology, ecology, and anatomy, particularly in the context of mountainous tropical forest and biodiversity management. Therefore, we examined elevation effects upon leaf anatomical structure of exotic invasive M. crenata at Mount Gede-Pangrango National Park (MGPNP). We sampled the leaves at four different elevations i.e., 715 m asl, 800 m asl, 900 m asl, and 1,000 m asl. Cross section leaf anatomy specimens of M. crenata were obtained by using paraffin method and stained with safranin and fast green. This study found that M. crenata leaf anatomy was correlated with elevation shown by changes in leaf tissue thickness and stomata size. Further study is needed of leaf anatomical variation of exotic invasive species along driven by soil properties and the variation across different plant taxa and growth forms. Such studies are important to determine adaptation capacity of invasiveness.
BEGONIA ROBII, A NEW SPECIES OF BEGONIA FROM LIMA PULUH KOTA, WEST SUMATRA Wisnu Handoyo Ardi; Deden Girmansyah; Mark Hughes
Reinwardtia Vol. 20 No. 1 (2021)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v20i1.4141

Abstract

ARDI. W.H., GIRMANSYAH, D. & HUGHES, M. 2021. Begonia robii, a new species of Begonia from Lima Puluh Kota, West Sumatra. Reinwardtia 20(1): 37–41. — A new species of Begonia sect. Jackia (Begoniaceae), B. robii Ardi & Girm., is described from West Sumatra and is a limestone karst endemic in the Tanah Datar dan Lima Puluh Kota Regency. Its provisional IUCN threatened category is considered to be Endangered.
A NEW SPECIES OF BEGONIA (BEGONIACEAE) FROM SUMBAWA, LESSER SUNDA ISLANDS, INDONESIA DEDEN GIRMANSYAH
Reinwardtia Vol. 15 No. 2 (2016)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | 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.
A TAXONOMIC STUDY OF BALI AND LOMBOK BEGONIA (BEGONIACEAE) Deden Girmansyah
Reinwardtia Vol. 12 No. 5 (2009)
Publisher : BRIN Publishing (Penerbit BRIN)

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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).
Exploration of High elevation liana colonies on Mt. Slamet, Central Java, Indonesia WS Hoover; Deden Girmansyah; Harry Wiriadinata; James M. Hunter
Reinwardtia Vol. 13 No. 1 (2009)
Publisher : BRIN Publishing (Penerbit BRIN)

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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.
Two new species and one new subspecies of Begonia (Begoniaceae) from Southeast Sulawesi, Sulawesi, Indonesia Deden Girmansyah
Reinwardtia Vol. 13 No. 1 (2009)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar

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.
Co-Authors Decky Indrawan Junaedi Eka Fatmawati Tihurua Harry Wiriadinata James Hunter James M. Hunter KUSWATA KARTAWINATA Mark Hughes Nurvelly Rosanti Scott Hoover Unik, Mitra W. Scoot Hoover WIDOYANTI WIDOYANTI Wisnu Handoyo Ardi WISNU HANDOYO ARDI WS Hoover