buttonwood

Short definition from Wiktionary

Noun

1. 1
   The common name given to at least three species of shrub or tree: The mangrove tree (Conocarpus erectus, family Combretaceae) a tropical and subtropical species.
2. 2
   The common name given to at least three species of shrub or tree: The American sycamore or American plane tree (Platanus occidentalis, family Platanaceae).
3. 3
   The common name given to at least three species of shrub or tree: California sycamore or western sycamore (Platanus racemosa).