Eustephieae is a flowering plant tribe in the family Amaryllidaceae, subfamily Amaryllidoideae. It forms part of the Andean clade, one of two clades in The Americas.
Description Vegetative characteristics Eustephieae are bulbous plants with often long-necked bulbs and linear leaves. Generative characteristics The pedicellate, tubular flowers are borne on a solid scape.Meerow, A.W., Snijman, D.A. (1998). Amaryllidaceae. In: Kubitzki, K. (eds) Flowering Plants · Monocotyledons. The Families and Genera of Vascular Plants, vol 3. Springer, Berlin, Heidelberg.
Taxonomy It was published by John Hutchinson in 1934 with Eustephia as the type genus.USDA, Agricultural Research Service, National Plant Germplasm System. 2024. Germplasm Resources Information Network (GRIN Taxonomy). National Germplasm Resources Laboratory, Beltsville, Maryland. URL: https://npgsweb.ars-grin.gov/gringlobal/taxon/taxonomyfamily?type=tribe&id=2574. Accessed 15 December 2024. Missouri Botanical Garden. (n.d.-j). Eustephieae Hutch. Tropicos. Retrieved December 15, 2024, from https://www.tropicos.org/name/100352649 Phylogeny This tribe was resurrected from the Stenomesseae in 1995, by Meerow. The placement of Eustephieae within subfamily Amaryllidoideae is shown in the following cladogram, where this tribe is shown as a sister group to the remainder of the tetraploid Andean clade.
Subdivision The tribe has four genera: Eustephia Chlidanthus Hieronymiella Pyrolirion
Distribution The Eustephieae form the southern limit of the Andean clade. They are found in Peru in the southern Andes, and the northern Andes of Argentina, Bolivia and Chile. This is distinct from the central Andean distribution of the remainder of the parent clade.
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