New chromosome numbers for Lasiopetaleae: Malvaceae s.l. (or Sterculiaceae)

Wilkins, Carolyn; Chappill, Jennifer A.

doi:10.1071/sb01011

Cited by 15 publications

(7 citation statements)

References 18 publications

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“…Its karyotype consists mainly of metacentric chromosomes with one pair of larger CMA terminal bands and one smaller proximal pair. Our count of 2n = 18 diverges from all previous counts for the species, from materials obtained from other continents (Wilkins & Chappill, 2002;. These are herbaceous to shrub plants, with a wide distribution in the Neotropics where it occurs in anthropic areas, in the Caatinga, Amazonian Campinarana, Varzea Field, Cerrado, Ciliary Forest, Terra Firme Forest, Semidecidual Seasonal Forest, Ombrophilous Forest, Mangrove and Restinga.…”

Section: Bignoniaceaecontrasting

confidence: 81%

IAPT chromosome data 31

Marhold

Kučera

Aguiar-Melo

et al. 2019

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Section: Bignoniaceaecontrasting

confidence: 81%

IAPT chromosome data 31

Marhold

Kučera

Aguiar-Melo

et al. 2019

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“…-Recorded for S. exastia n = 10 (Wilkins, 1999) and S. elliptica (as K. velutina subsp. elliptica) n = 10 (Wilkins & Chappill, 2002).…”

Section: ■ Taxonomic Treatmentmentioning

confidence: 99%

Genomic data and morphological re‐assessment reveals synonymy and hybridisation among Seringia taxa (Lasiopetaleae, Malvaceae) in remote north‐western Australia

Binks¹,

Wilkins²,

Markey³

et al. 2020

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Conservation of rare or threatened species requires a range of information, including a sound taxonomic foundation, to ensure appropriate management. However, rare species are often known from a limited number of specimens, and that can hinder taxonomic understanding. Seringia exastia and S. katatona are two conservation-listed taxa that were poorly known in the remote Kimberley region of northern Western Australia. Recent surveys discovered additional populations of both species but also revealed extensive morphological variation that obscured the boundary between the two species and a third, more widespread species, S. nephrosperma. We applied genomic data (>5000 SNP loci) to investigate species boundaries and hybridisation within this group. We found unequivocal evidence that S. katatona is a hybrid between S. exastia and S. nephrosperma, which is consistent with its intermediate morphology in diagnostic characters between the two highly divergent parents. Unexpectedly, we also uncovered a lack of genome-wide differentiation and polyphyly between S. exastia and an intended outgroup taxon, S. elliptica. These results have significant taxonomic implications, for which reason we present a revised taxonomic treatment that shows S. katatona to be a nothospecies, S. ×katatona, and synonymises S. elliptica under S. exastia, the oldest effectively published name. These taxonomic revisions present new information that will enable reconsideration of the current conservation status of these taxa and inform their management in northern Western Australia.

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“…There is doubt as to separating Commersonia and Rulingia. Although these genera together form a monophyletic group, as shown by cladistic analyses of morphological data of the Lasiopetaleae (Wilkins 2002) and recent studies of ndliF molecular data (Whitlock et at. 2001), the species are intermingled and neither genus is monophyletic as currently delimited.…”

Section: Introductionmentioning

confidence: 95%