[1] She graduated from George Washington University in 1912 with an AB degree in history and languages and was the recipient of the Thomas F. Walsh undergraduate prize for academic excellence.

She studied as an assistant only one-night weekly during six months (October 1921 to May 1922) to obtain her formal mycology training, at the USDA Graduate School.

Together with Flora Wambaugh Patterson and William Webster Diehl she issued the exsiccata-like series Mycological exchange of 1921 with specimens distributed by the USDA.

She was the editor of the mycology section of Biological Abstracts for many years, and the only person to complete three five-year periods as a member on the editorial board of Mycologia.

In 1975, Cash and her sister moved to Binghamton, New York, where she started teaching community members to enjoy and recognize local flowering plants.

Her remains are in the Rock Creek Cemetery, Washington D.C. close to those of her older sister Lillian Claire Cash, who was a microbiologist.