Arecatannins are a class of condensed tannins in the sub-class procyanidins contained in the seeds of Areca catechu also called betel nut.

Pinang Xi Shi is a profession particular to Taiwan, undertaken by scantily dressed, young females on the roadside displaying their bodies while selling Areca catechu.

There is also the Pinang Palm (Areca catechu) that lent its name to the island of Penang, and the Black Lily (Tacca integrifolia) with its unique purplish-black coloured flowers.

Über Areca Catechu, Chavica Betle, und das Betelkauen" - On Areca catechu, Piper betle and the chewing of Betel leaves (Stuttgart, 1889)