He most frequently encountered species, and the one often simply referred to as "the guava", is the Apple Guava (Psidium guajava).[citation needed]
Guavas are typical Myrtoideae, with tough dark leaves that are opposite, simple, elliptic to ovate and 515 cm long. The flowers are white, with five petals and numerous stamens.
The genera Accara and Feijoa (= Acca, Pineapple Guava) were formerly included in Psidium.
[edit]Common names

Bengal guava-flower
The term "guava" appears to derive from Arawak guayabo "guava tree", via the Spanish guayaba. It has been adapted in many European languages: guava (Romanian, Swedish, Danish and Norwegian, also Greek and Russian ), Guave (Dutch and German), goyave (French), gujawa (Polish), goiaba (Portuguese).
Outside of Europe, the Arabic jwafa, the Japanese guaba (), the Tamil "koiyaa" (), the Tongan kuava and probably also the Tagalog bayabas are ultimately derived from the Arawak term.
Another term for guavas is pera or variants thereof. It ...more