The rainforests of tropical South and Central America have the highest diversity of plants in the world...
Epidendrum secundum, (Wayqecha Lodge, Peru).
(?) Cyrtochilum aureum (Wayqecha Lodge, Peru).
Ceiba pentandra 'Kapok'. One of the biggest trees in the world. Found in Central America and northern South America (and West Africa?).
Stachytarpheta is a large genus with over 100 species. They are found in Central and South America, with many species becoming weeds around the tropics of the world. Both native and introduced populations are often visted by butterflies and hummingbirds.