. "*Testudinaria cocolmeca (Procop.)" . "*Testudinaria macrostachya (Benth.) G.D.Rowley)" . "Dioscorea mexicana, Mexican yam or cabeza de negro is a species of yam in the genus Dioscorea.Dioscorea mexicana is a caudiciform dioscorea having either a partly to completely above-ground dome-shaped caudex with a thick, woody outer layer up to 3 feet(90 cm) in diameter and 8-10 inches(20 to 25 cm) in height. The caudex of D. mexicana is divided into regular polygonal plates that become protuberant with age, and separated by deep fissures."@en . . . "*Dioscorea tuerckheimii (R.Knuth)" . "*Dioscorea propinqua (Hemsl.)" . "*Dioscorea macrostachya var. sessiliflora (Uline)" . . "*Dioscorea macrostachya (Benth.)" . "*Dioscorea macrophylla (M.Martens & Galeotti)" . "*Dioscorea mexicana var. sessiliflora (Uline) Matuda)" . "*Dioscorea leiboldiana (Kunth)" . . "*Dioscorea deppei (Schiede ex Schltdl.)" . . "*Dioscorea deamii (Matuda)" . . "*Dioscorea bilbergiana (Kunth)" . "Mexican yam"@en . "*Dioscorea astrostigma (Uline)" . . "*Dioscorea anconensis (R.Knuth)" .