Phenology of the bunga bangkai (Amorphophallus gigas) in North Padang Lawas, North Sumatra Province, Indonesia

Abstract

The "bunga bangkai"is a compound interest with spadix and solitary inflorescences. Amorphophallus gigas is one of several species of Amorphophallus which is endemic to Sumatra. One of the original habitats for A. gigas is found in North Padang Lawas and is found in bloom almost all year round. This study aimed to observe the phenology of A. gigas in North Padang Lawas Regency, precisely in Bargottopong Village which was found on a rubber agroforestry land in one of the communities. Observations were made every 3 days, starting from the buds being found to the wilted state. Observations were made since it was discovered on February 25th, 2020, with a height of 58 cm with a shape that is still bud to wither (broken appendix and spatha withered) March 14th, 2020. From the time it was found to wither it only lasted 19 days. There are 6 species of animals found when the "bunga bangkai"blooms, including flies (Musca domistica), fleas (Tribolium confusum), forest mosquitoes (Aedes albipictus), ants (Camponutus sp), beetles (Plagiodera sp), and moths (Scania olivares).