Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis Author Linnaeus, Carolus text 1758 Laurentius Salvius Stockholm https://archive.org/download/mobot31753000798865/mobot31753000798865.pdf book 2C6327E1-5560-4DB4-B9CA-76A0FA03D975 https://doi.org/10.5962/bhl.title.542 3922206 Anas spectabilis [ spec. nov. ] A. rostro basi gibbo compresso: carina pennacea nigra, capite canescente. Mus. Ad. Fr. 2. p. Anas canadensis, capite griseo caeruleo. Edw. av. 154. t. 154. Habitat in Canada, Svecia.