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Home at Last II: Gerbera hieracioides (Kunth) Zardini (Mutisieae, Asteraceae) is really a Chaptalia

Abstract. Gerbera hieracioides (Kunth) Zardini of the Gerbera-complex (Mutisieae, Asteraceae/Compositae) is distributed in Ecuador and Peru. This perennial herb was first named as Onoseris hieracioides Kunth and was later recognised as Trichocline hieracioides (Kunth) Ferreyra. Now it is generally t...

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Autores principales: Xu, Xiaodan, Zheng, Wei, Funk, Vicki A., Wen, Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Pensoft Publishers 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5904492/
https://www.ncbi.nlm.nih.gov/pubmed/29674929
http://dx.doi.org/10.3897/phytokeys.95.22916
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author Xu, Xiaodan
Zheng, Wei
Funk, Vicki A.
Wen, Jun
author_facet Xu, Xiaodan
Zheng, Wei
Funk, Vicki A.
Wen, Jun
author_sort Xu, Xiaodan
collection PubMed
description Abstract. Gerbera hieracioides (Kunth) Zardini of the Gerbera-complex (Mutisieae, Asteraceae/Compositae) is distributed in Ecuador and Peru. This perennial herb was first named as Onoseris hieracioides Kunth and was later recognised as Trichocline hieracioides (Kunth) Ferreyra. Now it is generally treated as Gerbera hieracioides (Kunth) Zardini but it has never been included in any section of Gerbera. In this study, the position of Gerbera hieracioides is assessed based on morphology and a molecular phylogeny that includes G. hieracioides and 28 other species from the Gerbera-complex. Morphologically, G. hieracioides bears leaves with the adaxial epidermal surface without stomates but with soft thin trichomes, bracteate scapes, trimorphic capitula and inner ray florets with the corolla shorter than the style. These characters suggest that the species is most closely related to Chaptalia rather than to Gerbera or Trichocline. Furthermore, the phylogenetic results based on two nuclear (ITS and ETS) and two chloroplast (trnL–trnF and trnL–rpl32) sequences strongly support the placement of G. hieracioides nested within Chaptalia. As both morphological characters and the molecular phylogenetic results support the transfer of G. hieracioides to Chaptalia, this enigmatic taxon is recognised as Chaptalia hieracioides (Kunth) X.-D. Xu & W. Zheng.
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spelling pubmed-59044922018-04-19 Home at Last II: Gerbera hieracioides (Kunth) Zardini (Mutisieae, Asteraceae) is really a Chaptalia Xu, Xiaodan Zheng, Wei Funk, Vicki A. Wen, Jun PhytoKeys Research Article Abstract. Gerbera hieracioides (Kunth) Zardini of the Gerbera-complex (Mutisieae, Asteraceae/Compositae) is distributed in Ecuador and Peru. This perennial herb was first named as Onoseris hieracioides Kunth and was later recognised as Trichocline hieracioides (Kunth) Ferreyra. Now it is generally treated as Gerbera hieracioides (Kunth) Zardini but it has never been included in any section of Gerbera. In this study, the position of Gerbera hieracioides is assessed based on morphology and a molecular phylogeny that includes G. hieracioides and 28 other species from the Gerbera-complex. Morphologically, G. hieracioides bears leaves with the adaxial epidermal surface without stomates but with soft thin trichomes, bracteate scapes, trimorphic capitula and inner ray florets with the corolla shorter than the style. These characters suggest that the species is most closely related to Chaptalia rather than to Gerbera or Trichocline. Furthermore, the phylogenetic results based on two nuclear (ITS and ETS) and two chloroplast (trnL–trnF and trnL–rpl32) sequences strongly support the placement of G. hieracioides nested within Chaptalia. As both morphological characters and the molecular phylogenetic results support the transfer of G. hieracioides to Chaptalia, this enigmatic taxon is recognised as Chaptalia hieracioides (Kunth) X.-D. Xu & W. Zheng. Pensoft Publishers 2018-02-09 /pmc/articles/PMC5904492/ /pubmed/29674929 http://dx.doi.org/10.3897/phytokeys.95.22916 Text en Xiaodan Xu, Wei Zheng, Vicki A. Funk, Jun Wen http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Xu, Xiaodan
Zheng, Wei
Funk, Vicki A.
Wen, Jun
Home at Last II: Gerbera hieracioides (Kunth) Zardini (Mutisieae, Asteraceae) is really a Chaptalia
title Home at Last II: Gerbera hieracioides (Kunth) Zardini (Mutisieae, Asteraceae) is really a Chaptalia
title_full Home at Last II: Gerbera hieracioides (Kunth) Zardini (Mutisieae, Asteraceae) is really a Chaptalia
title_fullStr Home at Last II: Gerbera hieracioides (Kunth) Zardini (Mutisieae, Asteraceae) is really a Chaptalia
title_full_unstemmed Home at Last II: Gerbera hieracioides (Kunth) Zardini (Mutisieae, Asteraceae) is really a Chaptalia
title_short Home at Last II: Gerbera hieracioides (Kunth) Zardini (Mutisieae, Asteraceae) is really a Chaptalia
title_sort home at last ii: gerbera hieracioides (kunth) zardini (mutisieae, asteraceae) is really a chaptalia
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5904492/
https://www.ncbi.nlm.nih.gov/pubmed/29674929
http://dx.doi.org/10.3897/phytokeys.95.22916
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