Inventarisasi Jenis-Jenis Anggrek di Kawasan Banyak Angkrem dan Kedung Kopong, Kecamatan Salaman, Kabupaten Magelang, Jawa Tengah

Banyak Angkrem and Kedung Kopong are medium lowland tropical rain forest areas where many types of orchids can be found. This study aims to determine the types and diversity of orchids found in the area of ​​Banyak Angkrem and Kedung Kopong. Data was collected using the Visual Encounter Survey (VES) method with a radius to the right and to the left 5 m from the observation path with a research area ​​6.24 ha. The results showed that in the two areas found 15 species of orchids consisting of 10 species of epiphytic orchids (Acriopsis lilifolia, Agrostophyllum laxum, Bulbophyllum sp 1, Bulbophyllum sp 2, Dendrobium sagittatum, Dendrobium sp, Oberonia lotsyana, Pholidota sp, Polystaschya concreta, Vanila. planifolia) and 5 species of terrestrial orchids (Geodorum densivelorum, Malaxis ophrydis, Malaxis sp, Nervilia plicata, Perystilus goodyroides). The level of diversity (H ') of orchids in the two regions is classified as moderate with an H' value of 2.22

KEANEKARAGAMAN JENIS POHON PADA TIPE EKOSISTEM HUTAN HUJAN TROPIS DATARAN RENDAH DI HUTAN KAMPUS UNIVERSITAS JAMBI MENDALO

Hutan kampus Universitas Jambi Mendalo merupakan salah satu hutan alam sekunder tua yang merupakan perwakilan tipe ekosistem hutan hujan tropis dataran rendah (Lowland Tropical Rain Forest) yang memiliki keanekaragaman hayati cukup tinggi. Hingga saat ini data keanekaragaman jenis pohon di Hutan Kampus Universitas Jambi Mendalo masih belum tersedia secara lengkap. Penelitian ini bertujuan untuk mengidentifikasi jenis-jenis pohon yang tumbuh di Hutan Kampus Universitas Jambi Mendalo dengan tahapan suksesi berupa hutan alam sekunder tua pada tipe ekosistem Hutan Hujan Tropis Dataran Rendah. Penelitian ini dilaksanakan di Hutan Kampus Universitas Jambi Mendalo, Desa Mendalo Darat, kecamatan Jambi Luar Kota, Kabupaten Muaro Jambi. Inventarisasi menggunakan teknik eksplorasi dengan intensitas sampling 100% (sensus), dengan mengambil sampel vegetatif (daun, dan ranting) dan bila ditemukan diambil pula sampel generatif (buah dan Biji) dari setiap jenis pohon yang dijumpai untuk selanjutnya dibuat menjadi sampel herbarium yang akan dikirim ke Herbarium Bogoriense Bogor. Hasil dari penelitian, didapat 105 spesies pohon berdiameter di atas 10 cm yang tergolong pada 56 genus dan 35 famili meliputi beberapa famili bernilai ekonomi dan konservasi tinggi yaitu : Dipterocarpaceae (Shorea sp., Hopea mengarawan), Lauraceae (Litsea sp., Alseodaphne sp.) ,dan Thymeleaceae (Aquillaria malaccensis).

Primer registro de Elaeagia (Rubiaceae) en México, con la descripción de una nueva especie, E. uxpanapensis

Elaeagia Wedd., a genus of some 16 species belonging to the tribe Rondeletieae, is centered in South America with a single species known from Cuba. Two additional species occur in Central America, one of which, E. nitidifolia Dwyer, is known only from Panama. The other, E. auriculata Hemsl., extends as far north as Guatemala (Standley & Williams , 1975; Dwyer, 1980). Most members are large trees, some attaining 35 meters, although the Cuban species is said to be shrubby (Standley, 1921). All known species occur in montane forest at altitudes of 800 to 2 800 meters. Consequently, it was surprising to see material, apparently representing an undescribed species, from lowland tropical rain forest in SE Oaxaca and adjacent Veracruz in Mexico. However, Dr. Tom Wendt's collecting efforts towards a woody flora of the Uxpanapa Zone have yielded a number of range extensions for taxa previously known only from Central America or Chiapas. Significantly, this region lies at the northern limits of the area to be included in Flora Mesoamericana. An additional collection is known from montane forest at 1 100 m in northern Chiapas, a habitat more typical for the genus .