The (malic) acid test in the Biological Flora of Geranium pratense: a cautionary tale
While producing the recent Biological Flora account for Meadow Crane’s-bill, Geranium pratense L., its authors stumbled on an extraordinary error that had been perpetuated and elaborated in the literature for 140 years. It is a cautionary tale that should be of interest to prospective Biological Flora authors, or indeed for anyone engaged in reviewing the…