El ceibo, seibo, bucaré (Erythrina crista-galli, del griego ερυθρος erythros, "rojo", y el latín crista galli, "cresta de gallo") es un árbol de la subfamilia Faboideae originario de Sudamérica, en Bolivia, Brasil, Paraguay, Argentina y Uruguay. Para estos dos últimos su flor es uno de los distintivos nacionales. También se conoce con otros nombres comunes como árbol del coral, flor de coral, pico de gallo, gallito, sananduva. Es el árbol y flor nacional de Uruguay y Argentina.

Erythrina crista-galli is a flowering tree in the family Fabaceae, native to Argentina, Uruguay, Brazil and Paraguay. It is widely planted as a street or garden tree in other countries, most notably in California (in the United States). It is known by several common names within South America: ceibo, seíbo (Spanish), corticeira (Portuguese) and the more ambiguous bucaré, to name a few. In English it is often known as the Cockspur Coral Tree.
The tree's flower is the national flower of Argentina and Uruguay. It is also the official city tree of Los Angeles, California (where it is referred to simply as "the coral tree").
This species characteristically grows wild in gallery forest ecosystems along water courses, as well as in swamps and wetlands. In urban settings, it is often planted in parks for its bright red flowers.

アメリカデイゴ（亜米利加梯梧、学名：Erythrina crista-galli）とはマメ科の落葉低木。和名はカイコウズ（海紅豆）。カイコウズの名はあまり使われず、アメリカデイゴと呼ばれることが多い。また、「アメリカデイコ」と「コ」が濁らないこともある。