Carlotta Case Hall (January 19, 1880–1949) was an American botanist and university professor who collected and published on ferns. She also co-authored a handbook on the plants of Yosemite National Park.
Carlotta Hall was born in Kingsville, Ohio, in 1880 to Adelaide Percy (Hardy) Case and Quincy A. Case. She studied botany at the University of California, Berkeley, graduating with a B.S. in 1904. In 1910 she married the botanist Harvey Monroe Hall, with whom she had a daughter, Martha, in 1916.
Hall became a fern collector and an assistant professor of botany at the University of California, Berkeley. She published on ferns of the Pacific Coast and co-wrote the illustrated handbook A Yosemite Nature (1912) with her husband as a pocket-sized botanical guidebook to Yosemite National Park. The book covers more than 900 species, omitting only the grasses, sedges, and rushes.
She was a member of the California Academy of Sciences and a corresponding member of several European scientific societies.
A species of California fern, the tufted lacefern or Carlotta Hall's lace fern (Aspidotis carlotta-halliae), is named in her honor.
Her papers, along with those of her husband and daughter, are held by UC Berkeley.
As author;
As editor;
As co-author with Harvey Monroe Hall;