Italian scientist (1764–1846).
Maria Medina Coeli (1764 in Chiavenna – 1846 in Pianello Lario) (also known as Helena Perpenti) was an Italian medical doctor, inventor and botanist. Maria was the daughter of the medical doctor Sebastian Medina Coeli and his wife Isabella Battistessa Coeli who belonged to one of the most prominent families in the alpine town where Maria was born. She was the youngest of five children.