Adenocalymma apurense

Adenocalymma apurense is a woody vine native from Mexico through tropical America. It climbs with simple tendrils that take the place of the terminal leaflet on some leaves. The bright yellow flowers open in clusters at the shoot tips or where leaves meet the stem. Each flower has a narrow tube that widens to a bell-shaped mouth, with two upper lobes and three lower lobes. Photographed in Colombia.