or

-Nepeta meyeri and Ribes meyeri is named for Carl Anton von Meyer, 1795-1855, German- Russian botanist, and plant collector, director of the St. Petersburg Botanical Gardens;

or

Picea meyeri and Syringa meyeri are for Frank Nicholas Meyer, 1875-1918, Netherland born, naturalized American citizen, collected plants in Asia for the USA department of Agriculture, confirmed the origin of the Chestnut blight. The meyer lemon also named for him.

or

Ernst Heinrich Friedrich Meyer, 1791-1858,German botanist,professor, and the director of the botanic gardens at Konisberg.