Until recently, A. eurycorymbus was known only from the type locality, probably the Serra Negra Biological Reserve, a Brejo de altitude in the mountains of Pernambuco in Inaja and Floresta municipalities, which was designated an area of extreme biological importance (MMA, 2002). The Serra Negra Biological Reserve is the oldest in Brazil, the result of efforts by ecologist and conservationist Vasconcelos Sobrinho. It is the last natural remnant of relatively untouched upland forest, with species from Amazonia, and dominated by trees with trunks over 50 cm in diameter. IBAMA (Brazil's environmental protection agency) is responsible for this reserve. It is threatened today by the presence of livestock within its boundaries, illegal beekeeping using Africanized Apis bees (see Chapter 5), plus conflicts with the Pipipa Indians who have occupied installations reserved for researchers.
According to IUCN threatened species criteria, A. eurycorymbus is considered to be "vulnerable" (Siqueira Filho, 2004). In 2005, it was placed on the red list of threatened Brazilian plant species, in the category "critically endangered". —SeeSiqueira & Leme 2007
