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Homoplasious character combinations and generic delimitation: a case study from the Indo-Pacific arecoid palms (Arecaceae: Areceae)

Homoplasious character combinations and generic delimitation: a case study from the Indo-Pacific arecoid palms (Arecaceae: Areceae),10.3732/ajb.93.7.1

Homoplasious character combinations and generic delimitation: a case study from the Indo-Pacific arecoid palms (Arecaceae: Areceae)   (Citations: 21)
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Journal: American Journal of Botany - AMER J BOT , vol. 93, no. 7, pp. 1065-1080, 2006
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    • ...In the 40 years since the last species, Cyrtostachys glauca H. E. Moore, was published (Moore 1966) the number of herbarium specimens of Cyrtostachys has increased greatly, particularly due to activities related to the Palms of New Guinea Project (Baker 2000, 2002); the palm collecting density in the western part of New Guinea, in particular, has increased dramatically...
    • ...Harold E. Moore Jr discovered and published C. glauca H. E. Moore from Morobe district, Papua New Guinea (Moore 1966)...
    • ...5. Cyrtostachys glauca H. E. Moore (1966: 86)...
    • ...Moore (1966) pointed out his suspicions that the five taxa above might not be distinct; they all have a solitary habit and 12 stamens except for Cyrtostachys phanerolepis — six stamens, pits in 9 series and larger fruits (Burret 1936)...

    Charlie D. Heatubunet al. A monograph of Cyrtostachys (Arecaceae)

    • ...Disagreements between morphological taxonomies and molecular phylogenies have often been attributed to high levels of homoplasy in characters traditionally used to delimit taxa (e.g., Lavin et al., 2001; Moylan et al., 2004; Mueller et al., 2004; Simões et al., 2006) and taxon diagnoses based on plesiomorphic morphological character-states (e.g., Roalson et al., 2005; Norup et al., 2006)...
    • ...The finding that traditionally important taxonomic characters do not provide support for the clades identified in molecular phylogenies has become a frequent occurrence with the widespread development of molecular systematics (e.g., Lavin et al., 2001; Moylan et al., 2004; Van der Niet et al., 2005; Norup et al., 2006)...
    • ...When mapped onto a molecular phylogeny, characters originally used to build classifications have been found to be plesiomorphic (Lavin et al., 2001), homoplasious (Moylan et al., 2004; Norup et al., 2006), or simply uninformative for diagnosing clades (Van der Niet et al., 2005)...

    Gabriele Salvoet al. Phylogenetic relationships of Ruteae (Rutaceae): New evidence from the...

    • ...Lack of resolution could also be caused by rapid simultaneous radiation early in the evolutionary history of the genus as has been suggested in Araliaceae (Plunkett et al., 2004) and Arecaceae (Norup et al., 2006)...

    N. Rønstedet al. Reconstructing the phylogeny of figs (Ficus, Moraceae) to reveal the h...

    • ...It is generally assumed that unisexual flowers and sexual dimorphism represent derived conditions in palms (Tomlinson, 1990; Bawa, 1980; Bawa & al., 1985a; Moore & Uhl, 1982; Richards, 1986)...

    Aino Askgaardet al. Floral structure in the neotropical palm genus Chamaedorea (Arecoideae...

    • ...Generic delimitation within the Areceae has traditionally been difficult, due to a high degree of morphological homoplasy (Norup et al. 2006)...
    • ...Consequently Heterospathe is not defined by clear cut synapomorphies, but by a combination of homoplasious character states as follows: crownshaft absent, inflorescences interfoliar at anthesis, peduncle longer than the inflorescence rachis, first peduncular bract exserted beyond the prophyll, and both the prophyll and peduncular bracts persistent (Norup et al. 2006)...
    • ...Despite the problems of circumscription and the convoluted taxonomic history of the genus, a recent molecular study has found Heterospathe to be a strongly supported, monophyletic group (Norup et al. 2006)...
    • ...Two specimens of the Heterospathe elegans complex were included in the molecular study of Heterospathe carried out by Norup et al .( 2006), Banka et al. 2011 (H. elegans subsp...
    • ...The strict consensus tree resulting from parsimony analysis of PRK places the two accessions on different branches within the Heterospathe clade (Norup et al. 2006), which undermines our taxonomic decision here...

    Melinda S. Trudgenet al. A revision of the Heterospathe elegans ( Arecaceae ) complex in New Gu...

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