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"Rattan is a spiny climbing palm that grows into the canopy of the tropical rain forest using a climbing whip in the form of cirrus or flagella. The natural distribution of rattan is from Africa, India, Sri Lanka, China, Malay Peninsula, Indonesian Archipelago, Papua New Guinea until Australia and Fiji. There are 9 genera and about 300 species of rattans in the Indonesian Archipelago.In the forest of Indonesia, rattan grows from the lowland until the mountain area, that is from 0 to 2,900 meters about sea level (m asl). Its habitat is mostly on most area with annual rainfall above 2,000 to 4,000 mm per year.Almost all part of rattan canes are used by people surrounding forest area for many of their everyday life. For Indonesia, rattan is a non timber forest product that gives the greatest income to the economy of the country. The country supplies 90 % of the world demands on rattan cane as the raw material for furniture.For a management of a forest, it is believed that much basic knowledge about the nature of the forest is needed. One of them is to develop the forest as a resource of cane industry in a sustainable way. For this purpose the composition, distribution and density of rattan species in Gunung Halimun National Park (TNGH) were studied as a model. To facilitate a familiarity to the identity of rattan in TNGH, a study on the rattan flora of Java have been conducted. Hence the purpose of the study is to provide a manuscript of a field guide book of the rattan flora of Java and a study of the species composition, density and distribution of rattan in TNGH.Data were collected from December 1994 until May 1995. For the rattan Flora of Java, all specimens herbarium at Herbarium Bogoriense and Forest Research and Development Center and Nature Conservation were observed. Quantitative characters were noted and measured to create the identification key and description of the species. For species composition on rattan in TNGH, three areas were observed namely in Gunung (G.) Kencana, G. Pameungpeuk, and G. Pangkulahan using a continues square transect method, from elevation 800 - 1,400 m asl.The result of the study shows that, there are five genera consisting of 24 species of rattan in Java: Korthalsia (two species), Ceratolobus (two species), Plectocomia (two species), Calamus (14 species) and Daemonorops (four species). It is found that, Ceratolobus glaucescens, C. pseudoconcolor and Plectocomia longistigma are not included in the previous study done by Backer and Bakhuizen van den Brink, Jr.(1968), however this study supports their opinion that Calamus spectabilis and Daemonorops palembanicus are not found in Java.From three areas in TNGH, it was found that there are 13 species of rattans in the region. In terms of species richness and densities, G. Pameungpeuk comes first, follows by G. Pangkulahan and G. Kencana. Calamus heteroideus, C. javensis, Daemonorops melanochaetes, and Plectocomia elongata are dominant both in seedling and nature forms. The rattans are relatively abundant in the areas less than 1000 m asl. and decrease in number of species as well as the minimal population in the higher altitude. Calanms ornatus occures in 800 - 1,400 m asl., Daemonorops ruber in 800 - 1,500 m asl., D. oblongus in 800 - 1,400 m asl . According to previous studies by DransfieId (1974) and Mahyar (1983), they were found only from 0 - 800 m asl."

"Studi ini dilakukan pada bulan Juni-Juli 2012 untuk mengetahui sebaran terbaru Rafflesia zolingeriana dan struktur populasinya di Taman Nasional Meru Betiri. R. zolingeriana yang ditemukan sebanyak 19 populasi yang terdiri atas 26 koloni dan 152 individu. Populasi R. zolingeriana dominan ditemukan di lereng bukit, jauh dari pantai. Beberapa populasi berada di dekat pemukiman (kantong) dan di zona hutan dekat zona rehabilitasi. Dari 19 populasi yang telah diamati, sembilan merupakn distribusi baru yang belum pernah didokumentasikan dan satu di antaranya berada di luar kawasan TNMB. Populasi tersebut terdiri atas bunga mekar (7,89%), kuncup hidu (63,16%) dan kuncup mati (28,95%). Kuncup hidup dengan diameter 0,1-5 cm mendominasi populasi (50%), sedangkan kuncup yang siap mekar (diameter lebih dari 15 cm) hanya 0,42%. Tingkat keberhasilan kuncup untuk mekar diperkirakan rendah, sehingga kebelanjutan populasi R.zolingeriana terancam dan perlu dilestarikan, beik secara in situ maupun ex situ disampaikan dalam makalah ini."

"kajian permudaan alami di kawasan hutan Taman Nasional Gunung Halimun-Salak, Jawa Barat telah dilakukan dengan tujuan untuk mengungkap pola dan proses ekologi serta suksesi hutan. sebanyak 27 petak (10 m x 10 m ) telah di dan pada setiap petak dilakukan pengukuran terhadap anakan pohon ( diameter 2-5 cm), yang meliputi diameter setinggi 20 cm di atas tanah, tinggi dan posisi di dalam setiap petak. setiap jenis yang tercatat dibuat spesimen bukti ekologi, untuk identifikasi jenis. dalam 27 petak tercatat sebagai jenis dominan 73 jenis anak pohon , yang terdiri atas 51 marga dan 29 suku. macaranga triloba tercatat sebagai jenis dominan hanya pada 9 petak, sedangkan 4 jenis lainnya kurang dari 5 petak. ini menunjukan danya penyebarann jenis tertentu pada habitat tertentu pula, menunjukan adanya ketertarikan antara keberadaan suatu jenis dengan habitattertentu. ketinggian tempat dan penutupan kanopi diduga sangat berpengaruh terhadap terbentuknya tipe komunitas."

"Telah dilakukan penelitian terhadap kayu Syzygium aqueum Syzygium cumini dan Syzygium jambos di FMIPA UI kampus Depok Penelitian ini bertujuan untuk mengetahui kualitas serat kayu Syzigium tersebut sebagai kayu substitusi bahan baku kertas Kualitas serat kayu diketahui dengan cara mengukur dimensi serat dan menghitung nilai turunan dimensi serat Preparat maserasi kayu dibuat untuk pengukuran dimensi serat Kemudian nilai turunan dimensi serat dihitung berdasarkan data pengukuran dimensi serat Hasil pengukuran dimensi serat dan penghitungan nilai turunan dimensi serat dibandingkan dengan tabel standar kriteria Hasil yang didapatkan dari penelitian ini adalah ketiga serat kayu Syzygium tersebut masuk ke dalam kelas III Karakteristik serat kelas III yaitu serat pendek dan dinding serat relatif tebal

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Research about wood fiber of Syzygium aqueum Syzygium cumini and Syzygium jambos in FMIPA UI Depok had been conducted This research is aimed for knowing the wood fiber quality of those three Syzygium wood as substitute wood for paper pulp making raw material Wood fiber quality can be analyzed by measuring fiber dimensions and calculate the fiber dimensions derived values Wood maseration slide preparations were made for measuring fiber dimensions Fiber dimension derivate value were calculated based on the measuring data of fiber dimensions The resulting data of fiber dimensions and their derived values were compared with the table of criteria standard The result shows that those three Syzygium wood are grouped in class III the fibers are short and have thick fiber wall "

"Salah satu cara untuk merangsang pembungaan adalah dengan memberikan zat pengatur tumbuh. Dalam penelitian ini digunakan salah satu zat pengatur tumbuh yaitu Hydrasil yang diberikan dengan menyemprotkan larutan ke seluruh bagian tanaman setiap 10 hari dengan 4 kali pemberian.Penelitian ini bertujuan untuk mengetahui pengaruh pemberian Hydrasil terhadap pertumbuhan vegetatif dan pembungaan anggrek Laeliocattleya. Konsentrasi yang digunakan mulai dari 0,75 ppm hingga 2,50 ppm dengan selang 0,25 ppm. Hasil penelitian menunjukkan bahwa pemberian Hydrasil berpengaruh nyata terhadap pertambahan lebar daun dan jumlah tunas anakan baru. Pemberian Hydrasil tidak berpengaruh nyata terhadap pertambahan panjang daun, luas daun tinggi tanaman, berat basah tanaman, dan belum mampu merangsang pembungaan.Hasil uji nonparametrik Friedman pada taraf nyata α = 0,05 menunjukkan bahwa pemberian Hydrasil 0,75 PPm memberi pengaruh paling baik terhadap pertambahan lebar daun. Pemberian Hydrasil 0,75 ppm berpengaruh paling baik terhadap pertambahan jumlah tunas anakan."

"ABSTRAKUkel, Crozier, or Fiddlehead is a term for a fern leaf bud with circinnate type. These structure is one of the distinctive character found in ferns. In this article, some aspects related to the fern leaf bud will be discussed, include the origin of local name, list of non-circinnate type, developmental process, morphological diversity and potential utilization. This article is expected to further increase the interest of researcher and utilize these attractive and unique structure."

"ABSTRAKCanangium odoratum Baill. dikenal dengan nama kenanga, banyak ditanam sebagai tanaman hias. Bunganya yang berbau harum dapat diekstraksi untuk diambil minyak atsiri. Kultur kalus telah banyak dicoba untuk mendapatkan berbagai jenis metabolit sekunder yang disintesa oleir tanaman.Pemberian zat pengatur tumbuh 2,4-D dan kinetin 0,5 1,5 ppm pada media murashige & Skoog 1962 yang dinerkaya dengan air kelapa 15% dan ekstrak khamir 0,2 ppm, merangsang pertumbuhan eksplan petal kenanga hingga terbentuk kalus. Pengamatan kualitatif dilakukan selama 55 hari dengan selang waktu 5 hari. Pengamatan kuantitatif yaitu menimbang berat kalus hari ke-55. Jenis kalus yang terbentuk friabel kompak dengan warna bervariasi antara lain: putih dan hiiau. Biomassa kalus terbesar diperoleh pada perlakuan dengan pemberian 2,4-D 1,5-pom/kinetin 1,O pmm, yaitu 1,3129 gram berat basah dengan berat kering 0,0525 gram. Berdasarkan hasil uji perbandingan berganda, biomassa kalus dengan pemberian 2,4-D 1, 5ppm / kinetin 1,0 ppm berbeda nyata dengan biomassa kalus pada pemberian 2,4-D O,5 ppm/kinetin 0,5 PPm. Kenaikan konsentrasi 2,4-D dan kinetin mempercepat pembentukan kalus, tetapi tidak selalu disertai dengan kenaikan biomassa kalus.ABSTRACT"

"ABSTRAKPenelitian bertujuan untuk mengetahui struktur dan komposisi komunitas jenis tumbuhan bawah di areal Taman Nasional Gunung Gede Pangrango.° Penelitian dilakukan di tiga lokasi yaitu lereng bawah, lereng atas, dan punggung bukit.° Pengumpulan data dilakukan dari bulan April hingga September 1999.Pencacahan flora menggunakan metode berpetak dengan 2 buah transek sepanjang 275 m. Pada setiap transek dibuat 25 petak berukuran lx1 m dengan jarak 10 m antar petak.Hasil pencacahan tumbuhan bawah pada 150 petak lx1 m2 di tiga lokasi penelitian Gunung Masigit mencatat 43 jenis tumbuhan yang tergolong ke dalam 39 marga dan 35 suku, dengan jenis-jenis utama Dipteris conjugata, Blechnum finlaysonianum, Impatiens javensis, tlrena lobata, Reds sp, Elatostemma sp, Smilax zeylanica, Schima wallrchrr, Phaius sp, Vitis adnanta, Dendrochyllum sp, Cyperus sp.Sebaran jenis tumbuhan bawah di lokasi penelitian, khususnya di Lereng Bawah dan Punggung Bukit, sangat heterogen. Penyebaran jenisjenis tertentu umumnya tidak terkait dengan sebaran jenis-jenis iainnya. Komunitas tumbuhan bawah di Lereng Bawah dan Lereng Atas dapat disebut sebagai komunitas Dipteris conjugate, sedangkan di Punggung Bukit disebut asosiasi D.conjugata-B.fnlaysonianum. Karakteristik tumbuhan bawah di lokasi penelitian menunjukkan bahwa komunitas tumbuhan di sana telah mengalami gangguan. Kadar air lapangan yang dimiliki jenis-jenis dominan seperti Dipteris conjugata dan Blechnum finlaysonianum, yang hanya sekitar 30 %, memiliki resiko.tjnggi terhadap bahaya kebakaran.

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ABSTRACTComposition and Structures Community Lowland Fires in Gunung Masigit and Preliminary Study of Natural Regeneration Forest Fire Gunung Masigit, G. Gede-Pangrango National ParkGunung Gede Pangrango National Park, is one of the Long-term Ecological Research Site in Indonesia. In the late 1997, the fires have burnt and destroyed nearly 300 ha forest in this park . Of nine location of hot spots recognized G.Masigit was the largest burnt area with the tot& of 250 ha . Undergrowth vegetation got the most severe impacts. Almost undergrowth vegetation in various location in study site were totally burnt. However, with in three months following burning new seedlings such as Omalanthus populneus, Macaranga tanarius , Trema orientalis appeared in the forest floor.°Abdulhadi et al. (1999) reported that those species were found as the component of seed bank in a permanent plot of this forest. Thus, it is believed that those seedlings might be recruited from seed bank or seed rain.The objective of the research is to find out the composition and structure of undergrowth forest a community after forest fire in Gunung Masigit, G. Gede-Pangrango National Park.Data collection were carried out between April and September 1999 at three areas, i.e. upper slope, lower slope, ridge. Four transects of 275 m were established within each site; each two transects established in burnt and unburnt forest. A long the each 275 m transect 25 plots of l x1 m were established with the interval of 10 m.A total of 43 species belong to 39 genera and 35 families were recorded within 150 plots of unburnt sites. The dominant species of the unburnt sites were Dipteris conjugata, Blechnum fnlaysonianum, Impatiens javensis, Urena lobalata, Pteris sp, Elatostemma sp, Smilax zeylanica, Schima wallichii, Phaius sp, Vitis adnanta, Dendrochy1/um sp, Cyperus sp.Based on their important value indices (I V I) the plant communities in lower and upper slopes were called Dipteris conjugata community, while in ridge site was an association of D_conjugata and Blechnum fin/aysonianum. The composition of undergrowth forest community observed during this study clearly indicated that G. Masigit has experienced some kind of disturbance before the fire in the late 1997.Field water capacities of the dominant plants of the undergrowth forest were about 30 %. It is believed that this condition makes the forest is under high risk of fires.The species richness of born sites was higher than in unburnt sites due to occurrence of the secondary species such as Melastoma balatrichum and Omalanthus populneus, that were not found in the unburnt site. There were 38 species found on the ridge, as the richest site, followed by upper slope 33 species , and the lower slope 21 species. Based on the life form, the undergrowth species in burning area can be classified to 18 species of trees, 6 species of shrubs, 9 species of lianas, 15 species of herbs, and 5 species of ferns.The undergrowth forest community in burnt sites was dominated by herbs and ferns indicated that the community was still in an early succession. The LVI of plant communities in burnt site showed that the lower slope was the association of Pteris sp-Flatostemma sp., the upper slope was a community of Cyperus sp, and the ridge was the association of Cyperus sp-Pteris sp.

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