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INDONESIA
REINWARDTIA
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
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Articles 1,467 Documents
 92   93   94   95   96 
A NEW RECORD OF EUPHORBIACEAE WEEDS FOR PENINSULAR MALAYSIA Rafidah Abdul Rahman; Nik Faizu Nik Hassan
REINWARDTIA Vol 22, No 1 (2023): Volume 22, No 1 (2023): Reinwardtia
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/reinwardtia.2023.4423

Abstract

Caperonia A.St.-Hil. is a new genus record for Peninsular Malaysia, with the species of Caperonia palustris (L.) A.St.-Hil. This paper will provide a description, distribution, habitat, and colour plates of the species.
Preface Volume 22 (1) Year 2023 Andri Agus Rahman
REINWARDTIA Vol 22, No 1 (2023): Volume 22, No 1 (2023): Reinwardtia
Publisher : Research Center for Biology

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Abstract

BEGONIA TANGGAMUSENSIS, A NEW SPECIES OF BEGONIA SECT. PLATYCENTRUM FROM GUNUNG TANGGAMUS, SUMATRA AND NOTES ON ALLIED SPECIES BEGONIA SCOTTII AND BEGONIA PSEUDOSCOTTII HUGHES, MARK; GIRMANSYAH, DEDEN
REINWARDTIA Vol 23, No 1 (2024): Volume 23, No 1 (2024): Reinwardtia
Publisher : Research Center for Biology

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.
PRELIMINARY STUDY OF THE POLLEN MORPHOLOGY OF MALAYSIAN ZINGIBERACEAE (TRIBE ALPINIEAE) AND THE TAXONOMIC RELATIONSHIP Mohamad, Salasiah; Kalu, Meekiong; Sedek, Aimi Syazana
REINWARDTIA Vol 22, No 2 (2023): Volume 22, No 2 (2023): Reinwardtia
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/reinwardtia.2023.4538

Abstract

The family Zingiberaceae forms an important herbaceous layer in the tropical forests of Malaysia. From a phylogenetic point of view, certain genera of the problematic tribe Alpinieae are non-monophyletic and in need of more taxonomic evidence to support the classification. This study demonstrates how the palynological data could correlate with the proposed phylogenetic data, using representatives from the Malaysian species. The pollen morphology of 21 species from the tribe Alpinieae was investigated. Parameters including polarity, symmetry, shape, size, apertures, exine ornamentation, size of spine, type of spine apex, spine density, and distance between spine were analysed. The results demonstrated that the studied species were conveniently divided into two major groups based on the exine sculpturing of the spheroidal pollens, either psilate as in Etlingera and Hornstedtia, or echinate as in Alpinia, Conamomum, Meistera, Plagiostachys, Sundamomum, and Sulettaria. Hence, as far as the study is concerned, the main sculpturing is considered useful to generally distinguish the genera in the tribe.
Preface Reinwardtia Vol. 22, No 2 (2023) Sulistyaningsih, Lulut
REINWARDTIA Vol 22, No 2 (2023): Volume 22, No 2 (2023): Reinwardtia
Publisher : Research Center for Biology

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Abstract

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 JUNAEDI, DECKY INDRAWAN; TIHURUA, EKA FATMAWATI; WIDOYANTI, WIDOYANTI; GIRMANSYAH, DEDEN
REINWARDTIA Vol 23, No 1 (2024): Volume 23, No 1 (2024): Reinwardtia
Publisher : Research Center for Biology

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.
NEPENTHES CALCICOLA (NEPENTHACEAE), A NEW PITCHER PLANT FROM GULF PROVINCE, PAPUA NEW GUINEA Wilson, Gary W.; Venter, Stephanius; Damas, Kapiro Q.
REINWARDTIA Vol 22, No 2 (2023): Volume 22, No 2 (2023): Reinwardtia
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/reinwardtia.2023.4536

Abstract

A new species of pitcher plant from rain forest on limestone karst in the Purari River catchment in the Gulf Province of Papua New Guinea is described and illustrated as Nepenthes calcicola Gary W.Wilson, S.Venter & Damas. It is distinguished from N. neoguineensis on the basis of its distribution, ecology, habitat, and pitcher and inflorescence morphology. The new species is illustrated, and description is here given. The species is assessed as Vulnerable (VU) according to IUCN criteria.
DIVERSITY OF MANGROVES AND ASSOCIATED PLANTS IN MANDANGISIAO ESTUARY, MISAMIS ORIENTAL, PHILIPPINES SITOY, WELLA BABE O.; BUENAVISTA, DAVE P.
REINWARDTIA Vol 23, No 1 (2024): Volume 23, No 1 (2024): Reinwardtia
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/reinwardtia.2024.4604

Abstract

The study aimed to assess the diversity status of mangroves and associates. Four transect lines were established perpendicular to the shoreline, ranging from 20 to 100 meters based on mangrove stand size. Along these transects, three 10 m × 10 m quadrat plots were set up to evaluate mangrove trees, and within each quadrat, a 2 m × 2 m regeneration plot was established. The study calculated the di-versity indices, such as relative frequency, relative density, and relative dominance to determine the species im-portance value. A total of four mangrove species and two associated plants were identified, representing three mangrove families and three genera, as well as three plant families and three genera for associated plants. The record-ed species included Avicennia marina, Nypa fruticans, Rhizophora mucronata, Sonneratia caseolaris, Acanthus ebrac-teatus, and Acrostichum speciosum. The overall diversity value of the mangroves and associated plants was 0.87, indi-cating relatively low species richness. The true mangroves, Rhizophora mucronata exhibited the highest values for relative density (68.07%), while Nypa fruticans is the highest in terms of relative dominance (42.20%). Both have the same highest value in relative frequency (32.43%). All in all, the highest species importance value for true mangroves is Rhizophora mucronata with 126.23%. In associated plants, highest value of relative density and relative frequency belongs to Acanthus ebracteatus with 58% and 60%, respectively. Subsequently, the highest species importance value for associated plants is 118% for Acanthus ebracteatus. The study concluded that the Mandangisiao Estuary in Jasaan, Misamis Oriental has a limited species diversity, contrary to the initial hypothesis. Furthermore, the mangrove forest in the estuary faces potential threats from garbage dumping, tree cutting, boat mooring, and human encroachment, despite all the recorded species having a Least Concern conservation status.
Front Cover Reinwardtia Vol. 23, No 1 (2024) Sulistyaningsih, Lulut Dwi
REINWARDTIA Vol 23, No 1 (2024): Volume 23, No 1 (2024): Reinwardtia
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/reinwardtia.2024.4808

Abstract

MOLECULAR AND MORPHOLOGICAL ANALYSIS SUPPORTS THE TRANSFER OF THE MONOTYPIC INDONESIAN GENUS SEPTOGARCINIA KOSTERM. TO GARCINIA (CLUSIACEAE) Sari, Rismita; Crayn, Darren; Dillon, Natalie; Gadek, Paul; Abell, Sandra
REINWARDTIA Vol 22, No 2 (2023): Volume 22, No 2 (2023): Reinwardtia
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/reinwardtia.2023.4581

Abstract

Based on molecular phylogenetic analysis and an assessment of fruit and pollen characters, the transfer of Septogarcinia sumbawaensis Kosterm., endemic to Sumbawa Island, Indonesia and the sole member of the genus Septogarcinia, to Garcinia is strongly supported. The formal transfer of S. sumbawaensis to Garcinia (as G. sumbawaensis; the current name is G. septogarcinia) was based on morphological studies only. Phylogenetic analysis of nuclear internal transcribed spacer (ITS) sequences supports a placement of G. septogarcinia in Garcinia Section Brindonia. The distinctive dehiscent fruit, cited by Kostermans as justification for erecting Septogarcinia, is interpreted as an autapomorphy for this species in Garcinia. Pollen exine ornamentation is similar to G. griffithii, G. gummigutta var. gummi-gutta, G. mestonii, Garcinia sp. (Maluku) and Garcinia sp. (Batulanteh, Sumbawa).

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