Marcgravia_evenia
Marcgravia evenia
Species of vine
Marcgravia evenia is a species of flowering vine in the family Marcgraviaceae. Within this family it belongs to the Galetae group, which is characterized by a long inflorescence axis and boat shaped nectaries.[1] The plant is endemic to Cuba. The inflorescence of M. evenia is extraordinary. At the upper end of the pendant inflorescence are several concave bracts set at an angle to reflect and focus sonar pulses from bats, helping the bats to locate the flowers.. In the middle of the inflorescence is a discoid circle (or single-whorled umbel) of about twenty tubular tetramerous flowers. Below these is a second set of bracts very different from the reflective ones These are modified into extrafloral nectaries which is why the bats are interested, and can be enlisted as pollinators. Inflorescences with two different kinds of bracts are quite rare.[2][3] although the common poinsettia (Euphorbia pulcerima) is one such.