Eustephieae is a
tribe (in the family
Amaryllidaceae
The Amaryllidaceae are a family of herbaceous, mainly perennial and bulbous (rarely rhizomatous) flowering plants in the monocot order Asparagales. The family takes its name from the genus ''Amaryllis'' and is commonly known as the amaryllis fa ...
, subfamily
Amaryllidoideae
Amaryllidoideae (Amaryllidaceae ''s.s.'', amaryllids) is a subfamily of monocot flowering plants in the family Amaryllidaceae, order Asparagales. The most recent APG classification, APG III, takes a broad view of the Amaryllidaceae, which then ...
), where it forms part of the Andean
clade
A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, ...
, one of two American clades.
Taxonomy
Phylogeny
This tribe was resurrected from the
Stenomesseae Stenomesseae was a tribe (in the family Amaryllidaceae, subfamily Amaryllidoideae), where it forms part of the Andean clade, one of two American clades. The tribe was originally described by Traub in his monograph on the Amaryllidaceae in 1963, as ...
in 1995 by
Meerow
Alan W. Meerow is an American botanist, born in New York City in 1952. He specializes in the taxonomy of the family Amaryllidaceae and the horticulture of palms and tropical ornamental plants. He also works on the population genetics and mole ...
. The placement of Eustephieae within subfamily Amaryllidoideae is shown in the following cladogram, where this tribe is shown as a
sister group
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree.
Definition
The expression is most easily illustrated by a cladogram:
Taxon A and t ...
to the remainder of the
tetraploid Andean clade.
Subdivision
Four genera:
* ''
Eustephia
''Eustephia'' is a genus of South American plants in the Amaryllis family. All 6 known species are native to Peru, with the range of one species extending also into Bolivia
, image_flag = Bandera de Bolivia (Estado).svg
, fla ...
''
* ''
Chlidanthus
''Chlidanthus'' is a genus that consists of 10 species of tender bulbs from tropical South America, mostly natives to the Andes. The botanical name comes from the Greek, meaning "delicate flower". The plants have large spherical bulbs with gray-g ...
''
* ''
Hieronymiella
''Hieronymiella'' is a genus of South American plants in the Amaryllis family, known from only Bolivia and Argentina
Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern ha ...
''
* ''
Pyrolirion''
Distribution
The Eustephieae for 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.
References
Bibliography
* , in
*
* , in .
(additional excerpts)*
*
*
*
*
*
*
*
External links
{{Taxonbar, from=Q10492176
Amaryllidoideae
Asparagales tribes