Maximum-likelihood phylogenetic tree of Amorphophallus krausei and 17 related taxa from the family Araceae. Spirodela polyrhiza and Montrichardia arborescens are used as outgroups. The scale bar represents the number of substitutions at each locus. Accession numbers: Amorphophallus coaetaneus, NC_072945 (Gao et al. 2023); Amorphophallus titanium, NC_056329 (Abdullah et al. 2021); Amorphophallus konjac, MK611803 (Hu et al. 2019); Amorphophallus albus, NC_067990 (Shan et al. 2023); Amorphophallus krausei, OR400248 (this study); Caladium lindenii, NC068801 (reference not available); Syngonium angustatum, MN046894 (Henriquez et al. 2020); Xanthosoma helleborifolium, NC_051873 (reference not available); Alocasia navicularis, MN046882 (Henriquez et al. 2020); Leucocasia gigantea, NC_060475 (reference not available); Steudnera colocasiifolia, NC_051952 (reference not available); Arisaema prazeri, NC_072165 (reference not available); Pinellia ternata, ON462056 (Cai 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); Montrichardia arborescens, MN046889 (Henriquez et al. 2020).