Aeschynanthus radicans

Aeschynanthus radicans is a vine-like plant native to the humid tropics of the Malay Peninsula south to Java.
It is an epiphyte or lithophyte growing to 1.5 m tall, with leathery, green leaves that are 4–8 cm long, ovate to lanceolate, opposite or whorled. The flowers are terminal, tubular, 5-7.5 cm long, with the upper lobes shorter than the lower. They are usually scarlet with yellow throats.