Swartzieae

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Swartzieae
13010-Swartzia picta-Caura.JPG
Swartzia picta
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Tribe: Swartzieae
DC.
Type genus
Swartzia
Schreb.
Subclades and Genera

See text.

Swartzieae distribution.svg
Distribution of the Swartzieae
Synonyms [ citation needed ]
  • Swartziaceae Bartling
  • Swartzieae clade
  • Swartzieae sensu stricto
  • Swartzioid clade Torke and Schaal 2008 [1]
  • Swartzioids sensu lato
  • Tounateeae Baill. 1870

The tribe Swartzieae is an early-branching monophyletic clade of the flowering plant subfamily Faboideae or Papilionaceae. Traditionally this tribe has been used as a wastebasket taxon to accommodate genera of Faboideae which exhibit actinomorphic, rather than zygomorphic floral symmetry and/or incompletely differentiated petals and free stamens. [2] [3] It was recently revised and most of its genera were redistributed to other tribes (Amburaneae, Baphieae, and Exostyleae). [2] [4] [5] Under its new circumscription, this clade is consistently resolved in molecular phylogenies. [2] [4] [6] [7] [8] [9] [10] [1] [11] Members of this tribe possess "non-papilionate swartzioid flowers[…]largely characterized by a tendency to lack petals combined with a profusion and elaboration of free stamens" [2] [4] and a "lack of unidirectional order in the initiation of the stamens". [1] They also have "complete or near complete fusion of sepals resulting from intercalary growth early in development, relatively numerous stamens, and a single or no petal, with other petals not at all apparent in development." [12] The tribe is predicted to have diverged from the other legume lineages 48.9±2.8 million years ago (in the Eocene). [10]

Contents

Subclades and genera

Swartzioids sensu strictoIreland et al. 2000

The members of this clade occur mainly in lowland rain forests. [4] [6] [1]

Atelioids Ireland et al. 2000

The members of this clade are distinguished by "a nearly actinomorphic androecium with basifixed anthers, exarillate seeds, and a tendency toward alternate leaflets." [4] [1] They occur mainly in neotropical, seasonally-dry tropical woodlands. [4]

Related Research Articles

<span class="mw-page-title-main">Crotalarieae</span> Tribe of legumes

Crotalarieae is a tribe of flowering plants belonging to the family Fabaceae. It includes rooibos (Aspalathus linearis), which is harvested for sale as a tisane.

<span class="mw-page-title-main">Amorpheae</span> Tribe of legumes

The tribe Amorpheae is an early-branching clade within the flowering plant subfamily Faboideae or Papilionaceae. It is found from Mexico to Argentina. It was recently found to belong in a larger clade known informally as the dalbergioids sensu lato. This tribe is consistently resolved as monophyletic in molecular phylogenetic analyses. It is estimated to have arisen 36.9 ± 3.0 million years ago. A node-based definition for Amorpheae is: "the MRCA of Psorothamnus arborescens and Eysenhardtia orthocarpa." The tribe exhibits the following morphological synapomorphies: "epidermal glands throughout the plant body; dry, indehiscent fruits that are single-seeded; and terminal inflorescences."

<span class="mw-page-title-main">Brongniartieae</span> Tribe of legumes

The tribe Brongniartieae is one of the subdivisions of the plant family Fabaceae, primarily found in tropical regions of the Americas and in Australia The members of this tribe consistently form a monophyletic clade in molecular phylogenetic analyses. The tribe does not currently have a node-based definition, but morphological synapomorphies have been identified:

"stamens united by filaments in an adaxially open tube; anthers alternately long and basifixed, short and versatile; anther connective inconspicuous; septa present between seeds in pods; aril lateral lobe present and fitting into heel of funicle; fine red glandular processes present in axils; and pollen tricolporate with opercula and no definite endoaperture."

<span class="mw-page-title-main">Dalbergieae</span> Tribe of legumes

The tribe Dalbergieae is an early-branching clade within the flowering plant subfamily Faboideae. Within that subfamily, it belongs to an unranked clade called the dalbergioids. It was recently revised to include many genera formerly placed in tribes Adesmieae and Aeschynomeneae and to be included in a monophyletic group informally known as the dalbergioids sensu lato. The members of this tribe have a distinctive root nodule morphology, often referred to as an "aeschynomenoid" or "dalbergioid" nodule.

<span class="mw-page-title-main">Indigofereae</span> Tribe of legumes

The tribe Indigofereae is a subdivision of the plant family Fabaceae. It is consistently recovered as a monophyletic clade in molecular phylogenies. The Indigofereae arose 30.0 ± 3.3 million years ago.

<span class="mw-page-title-main">Podalyrieae</span> Tribe of legumes

The tribe Podalyrieae is one of the subdivisions of the plant family Fabaceae.

<span class="mw-page-title-main">Sophoreae</span> Tribe of legumes

The tribe Sophoreae is one of the subdivisions of the plant family Fabaceae. Traditionally this tribe has been used as a wastebasket taxon to accommodate genera of Faboideae which exhibit actinomorphic, rather than zygomorphic floral symmetry and/or incompletely differentiated petals and free stamens. Various morphological and molecular analyses indicated that Sophoreae as traditionally circumscribed was polyphyletic. This led to a re-circumscription of Sophoreae, which resulted in the transfer of many genera to other tribes. This also necessitated the inclusion of two former tribes, Euchresteae and Thermopsideae, in the new definition of Sophoreae. Tribe Sophoreae, as currently circumscribed, consistently forms a monophyletic clade in molecular phylogenetic analyses. The Sophoreae arose 40.8 ± 2.4 million years ago.

<span class="mw-page-title-main">Inverted repeat-lacking clade</span> Group of flowering plants

The inverted repeat-lacking clade (IRLC) is a monophyletic clade of the flowering plant subfamily Faboideae. Faboideae includes the majority of agriculturally-cultivated legumes. The name of this clade is informal and is not assumed to have any particular taxonomic rank like the names authorized by the ICBN or the ICPN. The clade is characterized by the loss of one of the two 25-kb inverted repeats in the plastid genome that are found in most land plants. It is consistently resolved in molecular phylogenies. The clade is predicted to have diverged from the other legume lineages 39.0±2.4 million years ago. It includes several large, temperate genera such as Astragalus, Hedysarum, Medicago, Oxytropis, Swainsona, and Trifolium.

<span class="mw-page-title-main">ADA clade</span> Clade of flowering plants

The ADA clade is the earliest-branching monophyletic clade of the flowering plant subfamily Faboideae. Evidence for this clade was sparse until recent molecular phylogenies that included basal faboid genera that previously had been poorly sampled.

<span class="mw-page-title-main">Amburaneae</span> Tribe of legumes

The tribe Amburaneae is one of the subdivisions of the plant family Fabaceae. It has been circumscribed to include the following genera, which used to be placed in tribes Sophoreae and Swartzieae:

<span class="mw-page-title-main">Angylocalyceae</span> Tribe of legumes

The tribe Angylocalyceae is one of the subdivisions of the plant family Fabaceae. It has been circumscribed to include the following genera, which had been placed in tribe Sophoreae:

<span class="mw-page-title-main">Exostyleae</span> Clade of legumes

The tribe Exostyleae is an early-branching monophyletic clade of the flowering plant subfamily Faboideae that are mostly found in Neotropical rainforests.

<i>Cladrastis</i> clade Clade of legumes

The Cladrastis clade is a monophyletic clade of the flowering plant subfamily Faboideae that is found in eastern Asia and southern North America. It is consistently resolved in molecular phylogenies and is sister to the Meso-Papilionoideae. Evidence for the existence of this clade was first proposed based on morphological (floral), cytological, and biochemical evidence. It is predicted to have diverged from the other legume lineages 47.4±2.6 million years ago.

The Andira clade is a predominantly Neotropical, monophyletic clade of the flowering plant subfamily Faboideae. The members of this clade were formerly included in tribe Dalbergieae, but this placement was questioned due to differences in wood anatomy and fruit, seed, seedling, floral, and vegetative characters. Recent molecular phylogenetic evidence has shown that they belong to a unique evolutionary lineage. It is predicted to have diverged from the other legume lineages in the late Eocene).

The tribe Ormosieae is one of the subdivisions of the plant family Fabaceae, primarily found in tropical regions of the Americas, but also in southeast Asia and northern Australia. The members of this tribe were formerly included in tribe Sophoreae, but were recently circumscribed into a new tribe. The members of this tribe consistently form a monophyletic clade in molecular phylogenetic analyses. The tribe does not currently have a node-based definition, but morphological synapomorphies have been tentatively identified: "mostly dehiscent pods with woody valves" and "tufts of minute colleter-like glands in the axils of bract and bracteoles". Like other genistoids, members of tribe Ormosieae are known to produce quinolizidine alkaloids.

<span class="mw-page-title-main">Genistoids</span> Clade of legumes

The Genistoids are one of the major radiations in the plant family Fabaceae. Members of this phylogenetic clade are primarily found in the Southern hemisphere. Some genera are pollinated by birds. The genistoid clade is consistently resolved as monophyletic in molecular phylogenetic analyses. It is estimated to have arisen 56.4 ± 0.2 million years ago. A node-based definition for the genistoids is: "the MRCA of Poecilanthe parviflora and Lupinus argenteus." One morphological synapomorphy has been tentatively identified: production of quinolizidine alkaloids. Some genera also accumulate pyrrolizidine. A new genus, to be segregated from Clathrotropis, has also been proposed to occupy an undetermined position within the genistoid clade.

<span class="mw-page-title-main">Dalbergioids</span> Clade of legumes

The dalbergioids are an early-branching monophyletic clade of the flowering plant subfamily Faboideae or Papilionaceae. They are pantropical, particularly being found in the neotropics and sub-Saharan Africa. This clade is consistently resolved as monophyletic in molecular phylogenetic analyses. It is estimated to have arisen 55.3 ± 0.5 million years ago. A node-based definition for the dalbergioids is: "The least inclusive crown clade that contains Amorpha fruticosaL. 1753 and Dalbergia sissooRoxb. ex DC. 1825." Indehiscent pods may be a morphological synapomorphy for the clade.

<span class="mw-page-title-main">Baphieae</span> Tribe of legumes

The tribe Baphieae is one of the subdivisions of the plant family Fabaceae. The Baphieae tribe arose 55.3 ± 0.4 million years ago.

Meso-Papilionoideae is a monophyletic clade of the flowering plant subfamily Faboideae that includes the majority of papilionoid legumes. This clade is consistently resolved in molecular phylogenies. It contains many agronomically important genera, including Arachis (peanut), Cicer (chickpea), Glycine (soybean), Medicago (alfalfa), Phaseolus, Trifolium (clover), Vicia (vetch), and Vigna.

<span class="mw-page-title-main">Mirbelioids</span> Group of legumes

The Mirbelioids are an informal subdivision of the plant family Fabaceae that includes the former tribes Bossiaeeae and Mirbelieae. They are consistently recovered as a monophyletic clade in molecular phylogenies. The Mirbelioids arose 48.4 ± 1.3 million years ago. Members of this clade are mostly ericoid (sclerophyllous) shrubs with yellow and red flowers found in Australia, Tasmania, and Papua-New Guinea. The name of this clade is informal and is not assumed to have any particular taxonomic rank like the names authorized by the ICBN or the ICPN. Members of this clade exhibit unusual embryology compared to other legumes, either enlarged antipodal cells in the embryo sac or the production of multiple embryo sacs. There has been a shift from bee pollination to bird pollination several times in this clade. Mirbelioids produce quinolizidine alkaloids, but unlike most papilionoids, they do not produce isoflavones. Many of the Mirbelioids have pseudoraceme inflorescences.

References

  1. 1 2 3 4 5 6 Torke BM; Schaal BA (2008). "Molecular phylogenetics of the species-rich neotropical genus Swartzia (Leguminosae, Papilionoideae) and related genera of the swartzioid clade". Am J Bot . 95 (2): 215–228. doi:10.3732/ajb.95.2.215. PMID   21632346.
  2. 1 2 3 4 Cardoso D; Pennington RT; de Queiroz LP; Boatwright JS; Van Wyk B-E; Wojciechowskie MF; Lavin M (2013). "Reconstructing the deep-branching relationships of the papilionoid legumes". S Afr J Bot . 89: 58–75. doi: 10.1016/j.sajb.2013.05.001 .
  3. Polhill RM (1994). "Classification of the Leguminosae". In Bisby FA; Buckingham J; Harborne JB (eds.). Phytochemical Dictionary of the Leguminosae, Plants and Their Constituents. Vol. 1. Chapman and Hall/CRC Press, London. pp. xxv–xlvii. ISBN   9780412397707.
  4. 1 2 3 4 5 6 Cardoso D; de Queiroz LP; Pennington RT; de Lima HC; Fonty É; Wojciechowski MF; Lavin M (2012). "Revisiting the phylogeny of papilionoid legumes: new insights from comprehensively sampled early-branching lineages". Am J Bot . 99 (12): 1991–2013. doi:10.3732/ajb.1200380. PMID   23221500.
  5. Wojciechowski MF (2013). "Towards a new classification of Leguminosae: Naming clades using non-Linnaean phylogenetic nomenclature". S Afr J Bot . 89: 85–93. doi: 10.1016/j.sajb.2013.06.017 .
  6. 1 2 Ireland HE; Pennington RT; Preston J (2000). "Molecular systematics of the Swartzieae". In Herendeen PS; Bruneau A (eds.). Advances in Legume Systematics, Part 9. Kew, UK: Royal Botanic Gardens. pp. 277–298. ISBN   184246017X. Archived from the original on 2014-01-16. Retrieved 2014-01-27.
  7. Pennington RT; Lavin M; Ireland H; Klitgaard B; Preston J; Hu J-M (2001). "Phylogenetic relationships of basal papilionoid legumes based upon sequences of the chloroplast trnL intron". Syst Bot . 55 (5): 818–836. doi:10.1043/0363-6445-26.3.537 (inactive 1 November 2024). JSTOR   3093980.{{cite journal}}: CS1 maint: DOI inactive as of November 2024 (link)
  8. Wojciechowski MF; Lavin M; Sanderson MJ (2004). "A phylogeny of legumes (Leguminosae) based on analysis of the plastid matK gene resolves many well-supported subclades within the family". Am J Bot . 91 (11): 1846–1862. doi: 10.3732/ajb.91.11.1846 . PMID   21652332.
  9. Ireland HE (2005). "Tribe Swartzieae". In Lewis G; Schrire B; MacKinder B; Lock M (eds.). Legumes of the world. Kew, UK: Royal Botanic Gardens. pp. 214–225. ISBN   1900347806. Archived from the original on 2014-02-02. Retrieved 2014-01-28.
  10. 1 2 Lavin M; Herendeen PS; Wojciechowski MF (2005). "Evolutionary rates analysis of Leguminosae implicates a rapid diversification of lineages during the Tertiary". Syst Biol . 54 (4): 575–594. doi: 10.1080/10635150590947131 . PMID   16085576.
  11. LPWG [Legume Phylogeny Working Group] (2013). "Legume phylogeny and classification in the 21st century: progress, prospects and lessons for other species-rich clades" (PDF). Taxon . 62 (2): 217–248. doi:10.12705/622.8. hdl:10566/3455.
  12. Tucker SC (2003). "Floral ontogeny in Swartzia (Leguminosae: Papilionoideae: Swartzieae): Distribution and role of the ring meristem". Am J Bot . 90 (9): 1271–1292. doi:10.3732/ajb.90.9.1271. PMID   21659227.
  13. Ireland HE (2007). "Taxonomic changes in the South American genus Bocoa (Leguminosae–Swartzieae): Reinstatement of the name Trischidium, and a synopsis of both genera". Kew Bull . 62 (2): 333–350. JSTOR   20443359.