Air plant n. (Bot.) A plant deriving its sustenance from the air alone; an aerophyte. Note: The "Florida moss" (Tillandsia, many tropical orchids, and most mosses and lichens are air plants. Those which are lodged upon trees, but not parasitic on them, such as the Spanish moss Tillandsia usneoides), are epiphytes.
... your thermometer hangs in the kitchen garden or at the back of the shrubbery, you must recognize one thing about it, namely, that it is an open-air plant. There are people who keep thermometers shut up indoors, which is both cruel and unnecessary. When you complain that the library is a little chilly—as surely you are entitled to—they look at the thermometer nailed to the Henry Fielding ... — Not that it Matters • A. A. Milne Read full book for free!