Maximum-likelihood phylogenetic tree of Amorphophallus yunnanensis and 18 related taxa from the family Araceae. Spirodela polyrhiza is used as an outgroup. The scale bar represents the number of substitutions at each locus. Accession numbers: Amorphophallus yunnanensis, OR400247 (this study); Amorphophallus coaetaneus, NC_072945 (Gao et al. 2023); Amorphophallus titanium, NC_056329 (Abdullah et al. 2021); Amorphophallus krausei, OR400248 (reference not available); Amorphophallus konjac, NC_046702 (Hu et al. 2019); Amorphophallus konjac, OR438675 (reference not available); Amorphophallus albus, NC_067990 (Shan et al. 2023); Caladium humboldtii, NC068800 (reference not available); Xanthosoma helleborifolium, NC_051873 (reference not available); Syngonium angustatum, MN046894 (Henriquez et al. 2020); Alocasia fornicata, MN636779 (reference not available); Leucocasia gigantea, NC_060475 (reference not available); Steudnera colocasiifolia, NC_051952 (reference not available); Arisaema franchetianum, MN046885 (Henriquez et al. 2020); Arisaema heterophyllum, NC_063965 (reference not available); Pinellia pedatisecta, MN046890 (Henriquez et al. 2020); Sauromatum giganteum, NC_050648 (Kim et al. 2020); Typhonium blumei, MT872311 (Low et al. 2021); Pistia stratiotes, NC_048522 (Quan and Chen 2020); Spirodela polyrhiza, MN419335 (reference not available).