Phylogenetic Analysis Reveals Multiple Cases of Morphological Parallelism and Taxonomic Polyphyly in &lt;I&gt;Lomatium&lt;/I&gt; (Apiaceae)

George, Emma E.; Mansfield, Donald H.; Smith, James F.; Hartman, Ronald L.; Downie, Stephen R.; Hinchliff, Cody E.

doi:10.1600/036364414x680843

Cited by 17 publications

(28 citation statements)

References 53 publications

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“…Highly diverse New World (primarily North American) clades also have been resolved in different groups of legumes, as in the lotus tribe, Loteae (Allan & Porter 2000); the milk-vetches (Astragalus; Wojciechowski et al 1999, Scherson et al 2008; tribe Psoraleae (Egan & Crandall 2008); the clover genus Trifolium (tribe Trifolieae; Ellison et al 2006); the sweet-pea genus Lathyrus (tribe Fabeae; Schaefer et al 2012); and the lupines (Lupinus; tribe Genisteae), with a major western North American clade (Drummond 2008). In Umbelliferae, the perennial endemic western North American genera of subfamily Apioideae constitute a highly diverse, previously unrecognized clade (Sun & Downie 2010, George et al 2014). In the mint family (Labiatae), the Californian sages (Salvia subg.…”

Section: North American Angiosperm Diversificationmentioning

confidence: 99%

Origins of Plant Diversity in the California Floristic Province

Baldwin

2014

Annu. Rev. Ecol. Evol. Syst.

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Recent biogeographic and evolutionary studies have led to improved understanding of the origins of exceptionally high plant diversity in the California Floristic Province (CA-FP). Spatial analyses of Californian plant diversity and endemism reinforce the importance of geographically isolated areas of high topographic and edaphic complexity as floristic hot spots, in which the relative influence of factors promoting evolutionary divergence and buffering of lineages against extinction has gained increased attention. Molecular phylogenetic studies spanning the flora indicate that immediate sources of CA-FP lineages bearing endemic species diversity have been mostly within North America-especially within the west and southwest-even for groups of north temperate affinity, and that most diversification of extant lineages in the CA-FP has occurred since the mid-Miocene, with the transition toward summer-drying. Process-focused studies continue to implicate environmental heterogeneity at local or broad geographic scales in evolutionary divergence within the CA-FP, often associated with reproductive or life-history shifts or sometimes hybridization.

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Section: North American Angiosperm Diversificationmentioning

confidence: 99%

Origins of Plant Diversity in the California Floristic Province

Baldwin

2014

Annu. Rev. Ecol. Evol. Syst.

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“…The molecular phylogenetic analyses of George et al (2014) (Feist et al 2013;George et al 2014). Mathias & Constance (1973) noted the similarity between Tauschia hooveri and T. tenuissima and discussed the option of including both in Lomatium.…”

Section: New Combinations 1 Lomatium Lithosolamans Jf Sm and Feistmentioning

confidence: 99%

“…The Perennial Endemic North American (PENA) clade of Apiaceae is a monophyletic group of 21 genera (~200 taxa) that occurs primarily in the western USA (Nesom 2012;George et al 2014) representing one of the largest endemic plant radiations in North America. The PENA clade includes many edaphic specialists and occurs in areas that are characterized by high environmental heterogeneity, such as the California Floristic Province and the Intermountain Region.…”

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confidence: 99%

“…Ten genera are poly-or paraphyletic and another six are nested within paraphyletic groups (Downie et al 2002;, 2010aGeorge et al 2014). Previous classifications have relied heavily on fruit characters as is typical for Apiaceae, but studies of the PENA clade suggest that these and many other characters traditionally used to define taxa have undergone repeated cycles of convergent or parallel evolution (Sun & Downie 2010b;George et al 2014). Ultimately, a well resolved phylogenetic hypothesis of the PENA clade would provide a framework for defining monophyletic genera.…”

mentioning

confidence: 99%

“…13; New Flora of the Pacific Northwest). Mathias & Constance (1943: 65-67); non Lomatium hooveri (Mathias & Constance 1942: 153-154) Constance & Ertter (1996: 519 (Downie et al 2002;Sun et al 2010a, b;George et al 2014;Feist et al 2013). The type of the genus, T. nudicaulis Schlechtendal (1835: 608), occurs in Mexico and preliminary data indicate that the Mexican species of Tauschia comprise a clade distinct from the American Tauschia (Feist et al 2013).…”

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confidence: 99%

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New Combinations in Lomatium (Apiaceae, Subfamily Apioideae)

et al. 2017

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Molecular and morphological phylogenetic analyses indicate that many of the perennial endemic genera of North American Apiaceae are either polyphyletic or nested within paraphyletic groups. In light of these results, taxonomic changes are needed to ensure that ongoing efforts to prepare state, regional, and continental floristic treatments of Apiaceae reflect recent findings. Thus, six new combinations are made to accommodate the movement of five taxa from their current assignment into the genus Lomatium and the elevation of one variety of Lomatium to the level of species; Lomatium lithosolamans, Lomatium tenuissimum, Lomatium fusiformis, Lomatium linearifolium, Lomatium multifidum, and Lomatium planosum.

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Resolving species boundaries in a recent radiation with the Angiosperms353 probe set: the Lomatium packardiae/L. anomalum clade of the L. triternatum (Apiaceae) complex

Ottenlips¹,

Mansfield

Buerki³

et al. 2021

American J of Botany

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Speciation not associated with morphological shifts is challenging to detect unless molecular data are employed. Using Sanger-sequencing approaches, the Lomatium packardiae/L. anomalum subcomplex within the larger Lomatium triternatum complex could not be resolved. Therefore, we attempt to resolve these boundaries here. METHODS:The Angiosperms353 probe set was employed to resolve the ambiguity within Lomatium triternatum species complex using 48 accessions assigned to L. packardiae, L. anomalum, or L. triternatum. In addition to exon data, 54 nuclear introns were extracted and were complete for all samples. Three approaches were used to estimate evolutionary relationships and define species boundaries: STACEY, a Bayesian coalescent-based species tree analysis that takes incomplete lineage sorting into account; ASTRAL-III, another coalescent-based species tree analysis; and a concatenated approach using MrBayes. Climatic factors, morphological characters, and soil variables were measured and analyzed to provide additional support for recovered groups. RESULTS:The STACEY analysis recovered three major clades and seven subclades, all of which are geographically structured, and some correspond to previously named taxa. No other analysis had full agreement between recovered clades and other parameters. Climatic niche and leaflet width and length provide some predictive ability for the major clades. CONCLUSIONS:The results suggest that these groups are in the process of incipient speciation and incomplete lineage sorting has been a major barrier to resolving boundaries within this lineage previously. These results are hypothesized through sequencing of multiple loci and analyzing data using coalescent-based processes.

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Phylogenetic Analysis Reveals Multiple Cases of Morphological Parallelism and Taxonomic Polyphyly in <I>Lomatium</I> (Apiaceae)

Cited by 17 publications

References 53 publications

Origins of Plant Diversity in the California Floristic Province

Origins of Plant Diversity in the California Floristic Province

New Combinations in Lomatium (Apiaceae, Subfamily Apioideae)

Resolving species boundaries in a recent radiation with the Angiosperms353 probe set: the Lomatium packardiae/L. anomalum clade of the L. triternatum (Apiaceae) complex

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