Amorpheae

The tribe Amorpheae is an early-branching clade within the flowering plant subfamily Faboideae or Papilionaceae. It is found from Mexico to Argentina.[1] It was recently found to belong in a larger clade known informally as the dalbergioids sensu lato.[1][2][3] This tribe is consistently resolved as monophyletic in molecular phylogenetic analyses.[1][2][3][4][5][6][7][8][9][10] It is estimated to have arisen 36.9 ± 3.0 million years ago (in the Eocene).[6] A node-based definition for Amorpheae is: "the MRCA of Psorothamnus arborescens and Eysenhardtia orthocarpa."[6] The tribe exhibits the following morphological synapomorphies: "epidermal glands throughout the plant body; dry, indehiscent fruits that are single-seeded; and terminal inflorescences."[4]

Not to be confused with Amorphae or Amorphea.

Amorpheae
Amorpha fruticosa
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Rosids
Order:
Fabales
Family:
Fabaceae
Subfamily:
Faboideae
(unranked):
Dalbergioids[1][2][3]
Tribe:
Amorpheae

Boriss. 1964 emend. Barneby 1977[4]
Subclades and Genera

See text.

Synonyms
  • Daleeae Hutch.

Subclades and genera

Amorphoids

The amorphoids can be distinguished from the daleoids on the basis of their non-papilionaceous flowers.[4]

Daleoids

The daleoids can be distinguished from the amorphoids on the basis of their generally papilionaceous corollas.[4]

References
  1. 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.
  2. 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.
  3. 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.
  4. McMahon M, Hufford L (2004). "Phylogeny of Amorpheae (Fabaceae: Papilionoideae)". Am J Bot. 91 (8): 1219–1230. doi:10.3732/ajb.91.8.1219. PMID 21653479.
  5. 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.
  6. 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): 575–94. doi:10.1080/10635150590947131. PMID 16085576.
  7. McMahon MM, Sanderson MJ (2006). "Phylogenetic supermatrix analysis of GenBank sequences from 2228 papilionoid legumes". Syst Biol. 99 (12): 1991–2013. doi:10.1080/10635150600999150. PMID 17060202.
  8. 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 2021-01-17).CS1 maint: DOI inactive as of January 2021 (link)
  9. Doyle JJ, Doyle JL, Ballenger JA, Dickson EE, Kajita T, Ohashi H (1997). "A phylogeny of the chloroplast gene rbcL in the Leguminosae: taxonomic correlations and insights into the evolution of nodulation". Am J Bot. 84 (4): 541–554. doi:10.2307/2446030. JSTOR 2446030. PMID 21708606.
  10. Hu JM, Lavin M, Wojciechowski MF, Sanderson MJ (2000). "Phylogenetic systematics of the tribe Millettieae (Leguminosae) based on chloroplast trnK/matK sequences and its implications for evolutionary patterns in Papilionoideae". Am J Bot. 87 (3): 418–30. doi:10.2307/2656638. JSTOR 2656638. PMID 10719003.


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