Fenologi pohon ulin (Eusideroxylon zwageri Teijsm. & Binn.) di Kebun Raya Bogor

The phenological study of ironwood (Eusideroxylon zwageri Teijsm. & Binn.) has been carried out for three years (2001-2004) in the Bogor Botanic Garden (BBG). BBG is one of the ex-situ conservation for plants under the Indonesian Institute of Sciences (LIPI). The results from this study showed that iron wood is evergreen species, with the abortion of leaves that occurred throughout the year but with a small amount. The growth of shoot buds occurred 3-4 times a year during the rainy season or dry season. The period of flowering occurred up to nine months in a year which also did not depend on the season. Although often flowering, it was very rare to find the fruit. This was probably due to the natural pollinators of this species were not available in the Bogor Botanic Garden Prosiding Lokakarya Nasional "Status Konservasi dan Formulasi Strategi Konservasi Jenis-jenis Pohon yang Terancam Punah (Ulin, Eboni dan Michelia)" Puslitbang Konservasi dan Rehabilitasi, Badan Litbang Kehutanan, Kementerian Kehutanan RI, tanggal 18-19 Januari 2011. hal. 132-139