Margaretta Riley, née Hopper (May 4, 1804 – July 16, 1899), was an English botanist. She studied ferns and was the first British pteridologist of her sex.
She was born in Castle Gate, Nottingham on 4 May 1804 to Richard and Margaretta Hopper.[1] She married John Riley in 1826, agent for the Montague family in Papplewick, north of Nottingham, where she lived for the rest of her life.[1]
Margaretta Riley and her husband worked together as pteridologists studying ferns. They were both members of the Botanical Society of London − he from 1838, and she from 1839 on.[2]
She discontinued her botanical research when she was widowed in 1846.
The crater Riley on the planet Venus was named after her.[3]
Publications by Margaretta Riley include: