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Amorpheae

The tribe Amorpheae is an early-branching monophyletic clade of the flowering plant subfamily Faboideae or Papilionaceae. It is found from Mexico to Argentina.[1] It was recently included in an informal monophyletic clade known 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]

Subclades and genera[edit]

Amorphoids[edit]

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

Daleoids[edit]

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

References[edit]

  1. ^ a b c d 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. ^ a b c 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. 
  3. ^ a b c 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. ^ a b c d e McMahon M, Hufford L. (2004). "Phylogeny of Amorpheae (Fabaceae: Papilionoideae)". Am J Bot 91 (8): 1219–1230. doi:10.3732/ajb.91.8.1219. 
  5. ^ LPWG [Legume Phylogeny Working Group] (2013). "Legume phylogeny and classification in the 21st century: progress, prospects and lessons for other species-rich clades". Taxon 62 (2): 217–248. 
  6. ^ a b c 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:10.3732/ajb.1200380. 
  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. 
  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. 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): 41–30. PMID 10719003. 


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