New Combinations in Lomatium (Apiaceae, Subfamily Apioideae)

Feist, Mary Ann; Smith, James F.; Mansfield, Donald H.; Darrach, Mark; Mcneill, Richard P.; Downie, Stephen R.; Plunkett, Gregory M.; Wilson, Barbara L.

doi:10.11646/phytotaxa.316.1.11

Cited by 3 publications

(4 citation statements)

References 9 publications

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“…Since 1980, 21 new species and seven new varieties of Lomatium have been described (based on an analysis of data available from Tropicos®, ). In addition, taxa of other genera (e.g., Orogenia , Oreoxis , and Tauschia ) have been transferred into Lomatium (Feist et al, ). This taxonomic instability reflects the difficulty in sorting out evolutionary relationships using morphology alone, possibly due to the rapidity with which the genus diversified (Sun et al, ; Sun & Downie, , , ; George et al, ).…”

Section: Introductionmentioning

confidence: 99%

Try Tri again? Resolving species boundaries in theLomatium triternatum(Apiaceae) complex

Smith¹,

Mansfield

Stevens

et al. 2018

J of Sytematics Evolution

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Species boundaries have traditionally been delimited by applying phenotypic characters to a morphological species concept. With an increased understanding of the complexities of speciation as a process, species concepts have proliferated while at the same time, the ability to gather greater numbers and types of molecular characters has expanded the means by which species can be delimited. Phylogenetic studies of molecular data provide an opportunity to identify reciprocally monophyletic groupsand have led to the identification of cryptic or nearly cryptic species in which subtle differences in phenotypes or ecological niches can be uncovered only after monophyletic groups have been identified. Here, we investigate evolutionary relationships among a group of species in the Lomatium triternatum complex using molecular phylogenetic analyses for all samples, and ecological parameters for two of the 38 species included in this study. The results indicate that there are more reciprocally monophyletic groups in this complex than had been estimated using phenotypic data alone. The ecological data show a clear differentiation for the one pair of sister species where ecological sampling was available, implying that divergence within this group may have resulted from environmental selection for soil preferences that have been strong enough to result in speciation.

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Section: Introductionmentioning

confidence: 99%

Try Tri again? Resolving species boundaries in theLomatium triternatum(Apiaceae) complex

Smith¹,

Mansfield

Stevens

et al. 2018

J of Sytematics Evolution

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“…The perennial endemic North America (PENA) clade of Apioideae (Apiaceae) is one of the largest land plant radiations in western North America with 19 genera and ca. 230 species (Sun et al, 2004 ; Feist et al, 2017 ). The group has been shown to comprise several examples of apparent homoplasy in characters that were previously thought to be taxonomically informative (Downie et al, 2002 ; Sun and Downie, 2010a ; George et al, 2014 ).…”

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confidence: 99%

“…demonstrates that fruit morphology can be homoplastic (George et al, 2014 ). The discovery that the two species of Orogenia are nested within Lomatium was also based on results from molecular data (Sun et al, 2010a , b ; George et al, 2014 ; Feist et al, 2017 ). Orogenia had been defined on the basis of fruits with lateral wings that were thick and corky (Coulter and Rose, 1900 ); however, the two species were not monophyletic within Lomatium based on DNA sequence data and provide another example of morphologically based taxonomy that did not reflect evolutionary history in this clade (Sun and Downie, 2010a ; George et al, 2014 ; Feist et al, 2017 ).…”

mentioning

confidence: 99%

“…The discovery that the two species of Orogenia are nested within Lomatium was also based on results from molecular data (Sun et al, 2010a , b ; George et al, 2014 ; Feist et al, 2017 ). Orogenia had been defined on the basis of fruits with lateral wings that were thick and corky (Coulter and Rose, 1900 ); however, the two species were not monophyletic within Lomatium based on DNA sequence data and provide another example of morphologically based taxonomy that did not reflect evolutionary history in this clade (Sun and Downie, 2010a ; George et al, 2014 ; Feist et al, 2017 ). Homoplasy in fruit characters is known throughout Apiaceae, although Liu et al ( 2006 ) found that developmental origin of the wings, carpel shape, presence of vittae, woodiness of the endocarp, position of crystals, and type of carpophores in fruits of 18 genera of Apiales were taxonomically informative.…”

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confidence: 99%

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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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Evolutionary Origins of Three Rare Alpine-Endemic Species ofLomatium(Apiaceae) in the Wallowa and Elkhorn Mountains of Northeastern Oregon

Ottenlips

Feist

Mansfield

et al. 2020

International Journal of Plant Sciences

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New Combinations in Lomatium (Apiaceae, Subfamily Apioideae)

Cited by 3 publications

References 9 publications

Try Tri again? Resolving species boundaries in theLomatium triternatum(Apiaceae) complex

Try Tri again? Resolving species boundaries in theLomatium triternatum(Apiaceae) complex

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

Evolutionary Origins of Three Rare Alpine-Endemic Species ofLomatium(Apiaceae) in the Wallowa and Elkhorn Mountains of Northeastern Oregon

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