Answer: Off the top of my head I can't think of any that literally glow in the dark.
There is a perennial flower sometimes called the gas plant and sometimes burning bush, Dictamnus albus, it will light up if a match is held close to the bloom on a calm windless evening.
Some plants with white flowers reflect moonlight and are said to gleam in the dark for that reason, but they are not a light source per se.
There is also some discussion of genetic engineering and creating a glow in the dark plant using a fluorescent protein, for example:
I hope this helps answer your question.
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