Fun fact: most plant names ending in -ia are named in the honour of someone, usually a botanist, with the first part of the name coming from their family name. Magnolia? A botanist named Magnol. Zinnia? Zinn. Dahlia? Dahl. Begonia? Bégon. (And so on. Petunia being the first exception I could find - petun is a native name for the plant.)