rhododendronyoudaoicibaDictYouDict
rhododendron: [17] A rhododendron is etymologically a ‘rose-tree’. The term comes from Greek rhodódendron, a compound formed from rhódon ‘rose’ (apparently a relative of English rose) and déndron ‘tree’ (source of English dendrite [18] and dendrochronology [20]). This denoted the ‘oleander’, an application it retained through Latin rhododendron into English. The first record of its use for the plant we now know as the rhododendron dates from the mid 17th century.
=> rose
philodendron (n.)youdaoicibaDictYouDict
1837, from the Modern Latin genus name (1830), from Greek philodendron, neuter of philodendros "loving trees," from philo- "loving" (see philo-) + dendron "tree" (see dendro-). The plant so called because it clings to trees.
rhododendron (n.)youdaoicibaDictYouDict
c. 1600, from French rhododendron and directly from Latin rhododendron, from Greek rhododendron, literally "rose-tree," from rhodon "rose" (see rose (n.1)) + dendron "tree" (see dendro-).