Description: English: Botanical illustration of Annona nutans leaf, flower and flower parts. Date: 17 June 1914. Source: Safford, William E. (1914). "Classification of the Genus Annona with Descriptions of New and Imperfectly Known Species". Contributions from the United States National Herbarium. 18: 1–68. Author: The author of the article that the illustration came from is William Safford, but illustration itself is unattributed.