English: Botanical illustration of both sides of a leaf from Annona crassivenia.
Date
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
William Safford is the author of the article in which the illustration appears, the illustration is unsigned.
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