Xiphidium

Xiphidium is a genus of herbs in the family Haemodoraceae first described as a genus in 1775. It is native to tropical Americas, from southern Mexico through the Caribbean, Central America, and northern South America to Bolivia and central Brazil.

species
Two species are accepted.
 * Xiphidium caeruleum Aubl. - Mexico (Veracruz, Oaxaca, Chiapas, Tabasco, Puebla, Yucatán), Central America (all 7 countries), West Indies, South America (Colombia, Venezuela, Brazil (Acre, Amazonas, Roraima, Pará, Maranhão, Amapá), Guyana, Suriname, French Guiana, Ecuador, Peru, Bolivia)
 * Xiphidium pontederiiflorum M.Pell., Hopper & Rhian J.Sm. – Panama, Colombia, and Ecuador

formerly placed here

 * Schiekia orinocensis (Kunth) Meisn. (as Xiphidium angustifolium Willd. ex Link)
 * Cubanicula xanthorrhizos (C.Wright ex Griseb.) Hopper, J.E.Gut., E.J.Hickman, M.Pell. & Rhian J.Sm. (as Xiphidium xanthorrhizon C.Wright ex Griseb. )

Phylogeny
Comparison of homologous DNA has increased the insight in the phylogenetic relationships between the genera in the Haemodoroideae subfamily. The following trees represent those insights.