Eustephieae

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Eustephieae
Phycella bicolor.jpg
Eustephia coccinea
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Amaryllidaceae
Subfamily: Amaryllidoideae
Tribe: Eustephieae
Hutch. [1]
Type genus
Eustephia
Genera

See text

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. [3]

Contents

Description

Vegetative characteristics

Eustephieae are bulbous plants with often long-necked bulbs and linear leaves. [4]

Generative characteristics

The pedicellate, tubular flowers are borne on a solid scape. [4]

Taxonomy

It was published by John Hutchinson in 1934 [2] with EustephiaCav. as the type genus. [5] [2]

Phylogeny

This tribe was resurrected from the Stenomesseae in 1995, by Meerow. [6] 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. [7]

Cladogram: Tribes of subfamily Amaryllidoideae
Subfamily  Amaryllidoideae
Africa 

Tribe Amaryllideae

Africa 

Tribe Cyrtantheae

Africa 

Tribe Haemantheae

Australasia

Tribe Calostemmateae

Eurasian clade
Asia

Tribe Lycorideae

Mediterranean

Tribe Galantheae

Tribe Pancratieae

Tribe Narcisseae

American clade
Hippeastroid clade
Andean clade

Tribe Eustephieae

Subdivision

The tribe has four genera:

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. [7]

Related Research Articles

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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 molecular systematics of cycads and palms.

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<span class="mw-page-title-main">Hippeastreae</span> Tribe of flowering plants

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<span class="mw-page-title-main">Traubiinae</span> Subtribe of flowering plants

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Stenomesseae was a tribe, 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 Stenomessae based on the type genus Stenomesson. In 1995 it was recognised that Eustephieae was a distinct group separate from the other Stenomesseae. Subsequently, the Müller-Doblies' (1996) divided tribe Eustephieae into two subtribes, Stenomessinae and Eustephiinae.

<span class="mw-page-title-main">Eucharideae</span> Tribe of flowering plants

Eucharideae is a tribe of plants within the family Amaryllidaceae. It was augmented in 2000 by Meerow et al. following a molecular phylogenetic study that revealed that many elements of the tribe Stenomesseae segregated with it, rather than separately, and were subsequently submerged in it. Further revisions were made in 2020, when three genera were merged. It forms one of the tribes of the Andean subclade of the American clade of the subfamily.

<span class="mw-page-title-main">Clinantheae</span> Tribe of flowering plants

Clinantheae is a tribe, where it forms part of the Andean clade, one of two American clades. The tribe was described in 2000 by Alan Meerow et al. as a result of a molecular phylogenetic study of the American Amaryllidoideae. This demonstrated that the tribe Stenomesseae, including the type genus Stenomesson was polyphyletic. Part of the tribe segregated with the Eucharideae and were submerged into it, while the other part formed a unique subclade. Since the type species of Stenomesson was not part of the second subclade, it was necessary to form a new name for the remaining species together with the other genera that remained. This was Clinanthus, the oldest name for these species, and consequently the tribe Clinantheae.

<span class="mw-page-title-main">Hymenocallideae</span> Tribe of flowering plants

Hymenocallideae is a tribe, where it forms part of the Andean clade, one of two American clades. The tribe was originally recognised by both Meerow (1995) and the Muller-Doblies' (1996). Its phylogenetic position within the Amaryllidoideae was established by Meerow et al. in 2000, while in-depth infratribal relationships were established in 2002.

<span class="mw-page-title-main">Cliviinae</span> Subtribe of flowering plants

Cliviinae is a small subtribe of Haemantheae, and therefore within the African clades of Amaryllidoideae. It consists of two genera, Clivia, and Cryptostephanus.

<span class="mw-page-title-main">Gethyllidinae</span> Subtribe of flowering plants

Gethyllidinae is a small subtribe within the amaryllis family. It is within tribe Haemantheae, and therefore within the African clades of Amaryllidoideae. It contains two genera, Gethyllis and Apodolirion, both are endemic to southern Africa.

Amarylloidinae is a now obsolete informal name for an "infrafamily" within the Amaryllidaceae (Amaryllis) family, erected by Hamilton Traub. This grouping was designed to fill a perceived gap between the formal rank of subfamily and tribes. In his treatment of this family, he divided it first into four subfamilies. Within subfamily Amarylloideae he then divided his sixteen tribes into two infrafamilies, Amarylloidinae and Pancratioidinae, both of which were subsequently demonstrated to be polyphyletic, and hence were abandoned by Dahlgren, who used no rank between family and tribe. On the other hand, he also used a much more restricted Amaryllidaceae corresponding to Traub's subfamily Amarylloideae. Thus Traub's Amarylloideae most closely resembles subfamily Amaryllidoideae sensu APGIII.

References

  1. Fam.Fl.Pl.2:130.20 Jul 1934
  2. 1 2 3 Missouri Botanical Garden. (n.d.-j). Eustephieae Hutch. Tropicos. Retrieved December 15, 2024, from https://www.tropicos.org/name/100352649
  3. Vigneron 2008.
  4. 1 2 3 4 5 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.
  5. 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.
  6. Meerow 1995.
  7. 1 2 Meerow et al. 2000b.

Bibliography