Mangrove is an essential ecosystem that are located in the transition area of fresh and sea water. Therefore, species that grow are typical species that are able to adapt to the saline environment. The aim of this research is to characterize leaf anatomical structure for every species that compose the communities found in each mangrove zonations, including their similarities and dissimilarities characteristic. Sampling of examined leaf was carried out in the mangrove areas of Peling Island and Bakalan Island by making plots in four sites of the mangrove ecosystem area. Methods for leaf anatomical preparations were carried out using the paraffin-tert-butanol and paradermal sections. Anatomical characters as an adaptation to saline habitat are found in all species of mangrove plants, including thick cuticle and epidermal cells, thick leaves and water-storage tissue (hypodermis). In addition, there is found the presence of cork warts and sclereid as characteristic of the genus Rhizophora. Based on quantitative character observations, the mesophyll (palisade to sponge) ratio range from 0.28 ± 0.04 μm to 1.19 ± 0.42 μm, leaf thickness ratio 289,41 ± 38,21 μm to 695,20 ± 97,50 μm and the highest stomata density is owned by Lumnitzera littorea

The aim of this study is to explore information about the characteristics of collections of the type specimens of bamboo in Herbarium Bogoriense (BO) to obtain the infografic status of the collections. The study was conducted in April-May 2018 at BO, Research Center for Biology-LIPI with direct observation method. The population, as well as the sample of the research, is the whole collections of type specimens of bamboo in BO. Data obtained by examining and recording the entire collection of type specimens of bamboo in BO. Characteristics that observed are species names, collectors, number and year of collection, discovery location, number of sheets, specimen conditions, the journal of publication and year, kind of type and duplicate location. Each of species name is validated before it is analyzed. The data were analyzed and presented qualitatively as the tables and charts. There are 107 species from 117 collection numbers of type specimens of bamboo in BO. Two numbers collection from two species is not found. The most type specimen is from Gigantochloa (20,5%). Approximately 63,5% of type specimens were published and/or proposed the combinations of names by LIPI researchers. Elizabeth A.Widjaja is the collector of the most type specimens (43,6%). The highest period (34,2%) of collection activities was in 1991-2000. About 62,6% of type specimens are collected from various islands in Indonesia. There are 577 sheets of type specimens in BO, 92% are in good condition and 8% is good enough. There are 51,3% of holotype specimens in BO, followed by isotype (30,8%), paratype (11,1%), lectotype (2,6%), neotype (2,6%), epitype (0,8%), and isosyntype (0,8%). As many as 50% holotypes has duplicates in more than two different of herbarium locations, the other 37% are without duplicates. About 56% of type specimens are published in the journal of Reinwardtia and 16,8% in Kew Bulletin. ABSTRAK Tujuan penelitian ini adalah untuk menggali informasi karakteristik koleksi spesimen tipe bambu di Herbarium Bogoriense (BO) untuk mendapatkan infografik keadaan koleksi. Penelitian dilakukan pada April-Mei 2018 di BO, Pusat Penelitian Biologi-LIPI dengan metode observasi langsung. Populasi sekaligus sampel adalah seluruh koleksi spesimen tipe bambu di BO. Data diperoleh dengan cara memeriksa dan mencatat seluruh koleksi spesimen tipe bambu di BO. Karakteristik yang diamati yaitu nama jenis, pengumpul, nomor dan tahun koleksi, lokasi penemuan, jumlah lembar, kondisi, jurnal tempat terbit dan tahun, macam tipe dan lokasi duplikat. Setiap nama jenis divalidasi sebelum dianalisis. Data yang dihimpun dianalisis dan disajikan dalam bentuk tabel dan grafik yang diperkuat secara kualitatif. Diperoleh bahwa terdapat 107 jenis dari 117 nomor koleksi spesimen tipe bambu di BO. Dua nomor koleksi dari dua jenis tidak ditemukan. Spesimen tipe terbanyak adalah dari Gigantochloa (20,5%). Sekitar 63,5% spesimen tipe diterbitkan dan/atau diusulkan nama kombinasi oleh peneliti LIPI. Elizabeth A.Widjaja adalah pengumpul spesimen tipe terbanyak (43,6%). Pe...

A bamboo inventory for Banggai Kepulauan has never been done. Knowledge of the islands’ floristic diversity is poor. This study explored bamboo diversity in Banggai Kepulauan, Central Sulawesi, Indonesia. We conducted fieldwork from June – July 2019 on the islands of Peleng and Bakalan. Bamboo specimens were collected and deposited in Herbarium Bogoriense. We describe these specimens here. We found eight species: Bambusa tuldoides Munro, B. vulgaris Schrad. ex Wendl., Dendrocalamus asper (Schult.f.) Backer ex Heyne, Gigantochloa atter (Hassk.) Kurz, Neololeba atra (Lindl.) Widjaja, Schizostachyum brachycladum (Kurz ex Munro) Kurz, S. lima (Blanco) Merr., and Thyrsostachys siamensis Gamble. Here we record information on morphology, habitat and distribution alongside photographs and an identification key to the bamboo species of Banggai Kepulauan.

Gunung Leuser National Park (NP) is the biggest NP in North Sumatra. Though very few plant ecological studies were conducted there. Most studies in Gunung Leuser NP are related with protected animals, such as Sumatran Tiger, Elephant or Orang Utan. Thus, the aim of this preliminary study is to understand the plant structure and composition in the tropical forest of Gunung Leuser National Park. A 0.5-ha plot was established near Gua Kambing, Tangkahan area in November 2015. All tree species bigger than 15 cm girth were recorded, measured, and identified. The dominant species were from Dipterocarpaceae, followed by Myrtaceae and Achariaceae. The total number of trees was 693 trees or 1,386 trees/ha with the total Basal area was 42.9m2/ha and the biggest diameter was 147cm. The results from diversity index analysis ((H’=4.43; D=0.97; α=75) confirm that the forest area had a relatively high diversity, with Agrostistachis sessilifolia dominates the understory layer. The Gua Kambing area had relatively high plant diversity, less disturbance, and bigger trees than other studied areas in tropical Indonesian forests in Sumatra.

Barat yang termasuk ke dalam pulau-pulau kecil terluar Indonesia. Informasi keanekaragaman flora, terutama anggrek epifit, di pulau ini belum terekam dengan baik. Tujuan penelitian ini adalah menyediakan informasi keanekaragaman jenis anggrek epifit di Pulau Middleburg. Penelitian menggunakan metode pengumpulan data taksonomi. Material tumbuhan dikoleksi untuk dibuatkan spesimen herbarium dan disimpan di Herbarium Bogoriense (BO). Identifikasi spesimen dilakukan menggunakan acuan spesimen BO dan beberapa pustaka terkait. Dalam penelitian ini dijumpai 10