Gout stalk

Jatropha podagrica is a species of plant known by several English common names, including Buddha belly plant, gout plant, purging-nut, Guatemalan rhubarb, and goutystalk nettlespurge.
The stem is swollen into vasculum at the base and filled with thin sap. The plant bears bright red coral-like flowers throughout the year. The plant contains the toxic curcin, making it poisonous.
Jatropha podagrica is also known for its incredible ability to attract a variety of butterflies wherever it is grown. - Wikipedia