homotypic synonyms:
Ptisana fraxinea (Sm.) Murdock;

protologue: Pl. Icon. Ined. 2: t. 48 (1790) [url checked 20200504]

URL protologue: https://archive.org/stream/BDRJBMoaibibdigital.rjb.csic.es5515#page/48/mode/1up

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