Tamara,
I am in the same place with the names , I am always googling to see what plant is being talked about. With so many plant names that are impossible to spell and even harder to pronounce no wonder people come up with common names for their favorites.
I just cannot picture two old ladies having a conversation over the picket fence using the Latin names
On the other hand I do know exactly what plant is being talked about when it's proper name is used , there are way to many buttercups and bluebells to know what the heck is being talked about sometimes.