Molecular phylogenetics and new (infra)generic classification to alleviate polyphyly in tribe Hydrangeeae (Cornales: Hydrangeaceae)

Smet, Yannick De; Mendoza, Carolina Granados; Wanke, Stefan; Goetghebeur, Paul; Samain, Marie‐Stéphanie

doi:10.12705/644.6

Cited by 34 publications

(72 citation statements)

References 38 publications

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“…S1). The same difference between plastid data and ITS has been reported for Hydrangea L. of the Hydrangeaceae, the sister family to Loasaceae, by De Smet & al. (2015) and several other plant groups (Urtica L. -Grosse-Veldmann & al., 2016, Boraginaceae-Chacón & al., 2016.…”

Section: Discussionsupporting

confidence: 77%

Phylogenetic relationships and generic re‐arrangements in “South Andean Loasas” (Loasaceae)

Acuña

Fliesswasser

Ackermann

et al. 2017

TAXON

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Loasaceae, a mostly American group, is one of the largest families of Cornales. In spite of considerable progress over the last 20 years, the relationships of some clades remain controversial, especially in the “South Andean Loasas” (SAL—Blumenbachia, Caiophora, Loasa, Scyphanthus). The present study addresses the phylogenetic relationships in SAL employing four plastid markers (rps16, trnL‐trnF, trnS‐trnG, matK) and ITS and aims at resolving the systematics and evolution of the group. Sequences obtained from a total of 59 SAL species (ca. 70% of the total, representing all lineages in the group) and 25 outgroup taxa were analysed using maximum likelihood and Bayesian inference approaches. ML best and BI strict consensus trees showed no significant differences in their topologies. Our results confirm that two species of Loasa ser. Malesherbioideae are not part of the SAL clade, but should be included in Presliophytum, a result which is here formalized. Blumenbachia (including sect. Angulatae and sect. Gripidea) is confirmed as a monophylum with high support. Loasa has to be redefined and restricted to a clade including only ser. Deserticolae, ser. Floribundae, ser. Loasa and ser. Macrospermae. Scyphanthus and Caiophora both are each monophyla and sister groups, but with two clades of Loasa as successive sister groups: (((Caiophora+Scyphanthus)+Loasa ser. Pinnatae)+(L. ser. Volubiles+L. ser. Acaules)) in a very well‐supported clade. Accordingly, Caiophora, Loasa ser. Pinnatae, L. ser. Volubiles, L. ser. Acaules and Scyphanthus could be included into a single genus, with Scyphanthus taking priority over Caiophora, creating a fairly heterogenous genus of ca. 52 species and requiring 50 new names. Alternatively, the clades Loasa ser. Pinnatae and L. ser. Volubiles + ser. Acaules can be removed into new segregate genera, which is here argued for and which requires the creation of only 16 new names. The new genus names and some of the new combinations are here formalized.

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Section: Discussionsupporting

confidence: 77%

Phylogenetic relationships and generic re‐arrangements in “South Andean Loasas” (Loasaceae)

Acuña

Fliesswasser

Ackermann

et al. 2017

TAXON

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“…Nyssaceae 珙桐科 S48.320. Hydrangeaceae 八仙花 (繡球) 科 (2) IIBa.53 Saxifragaceae pro parte [ Deutzia 溲疏屬and Hydrangea (including Cardiandra , Pileostegia , and Schizophragma ) 八仙花屬 (De Smet et al 2015 )]. S48.324.…”

Section: Discussionmentioning

confidence: 99%

Phylogenetic Classification of Seed Plants of Taiwan

Lin

Chung

2017

Bot Stud

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BackgroundBiological classification, the hierarchical arrangement of scientific names of organisms, constitutes the core infrastructure of biological databases. For an efficient management of biological databases, adopting a stable and universal biological classification system is crucial. Currently in Taiwan Biodiversity Information Facility (TaiBIF; http://taibif.tw/), the national portal website that integrates Taiwan’s biodiversity information databases, angiosperms are arranged according to Cronquist’s System of Classification, which is not compatible with current trend of the Angiosperm Phylogeny Group (APG) classification. To consolidate the function and management of the database, TaiBIF is moving to adopt the APG IV classification and Christenhusz et al. (Phytotaxa 19:55–70, 2011)’s classification of gymnosperms, which we summarize as the Phylogenetic Classification of Seed Plants of Taiwan.ResultsThe Phylogenetic Classification of Seed Plants of Taiwan places gymnosperms in five families [vs. eight families in the Flora of Taiwan (FOT)] and angiosperms in 210 families (vs. 193 families in FOT). Three FOT gymnosperm families are synonymized in current treatment. Of the 210 APG IV families, familial circumscriptions of 114 families are identical with FOT and 50 families are recircumscription of FOT, with 46 families newly added. Of the 29 FOT families not included in current classification, two families are excluded and 27 families are synonymized.ConclusionsThe adoption of the Phylogenetic Classification of Seed Plants of Taiwan in TaiBIF will provide better service and efficient management of the nation’s biodiversity information databases.Electronic supplementary materialThe online version of this article (10.1186/s40529-017-0206-6) contains supplementary material, which is available to authorized users.

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“… Hydrangea section Cornidia (hereafter shortened as Cornidia ) is monophyletic, including the single Asian species ( Samain et al 2010 ; Granados Mendoza et al 2013a , b , 2015 ; De Smet et al 2015 ), and is sister to the section Calyptranthe Maxim., consisting of Asian climbing species ( De Smet et al 2015 ). Both clades together are sister to the section Asperae (Rehder) Y.De Smet & Samain, encompassing Asian shrubby species ( De Smet et al 2015 ).…”

Section: Introductionmentioning

confidence: 99%

On Hydrangea peruviana, an endangered species from Ecuador, and Hydrangea oerstedii, very common in Costa Rica and Panama, and seven threatened Central and South American Hydrangeas, which have been confounded with these

Samain¹,

Mendoza²,

Salas³

2021

Self Cite

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Hydrangea section Cornidia, currently consisting of 19 accepted taxa, occurs from Mexico to Chile and Argentina, with one species in southeast Asia. Its representatives are root-climbing lianas which may grow up to 60 m high in the tree canopy of temperate to (sub)tropical forests. Our extensive field work throughout its distribution area, study of herbarium specimens and ongoing molecular studies have resulted in the discovery of species new to science, as well as new insights into the circumscription of many taxa. We here present amended descriptions for seven Hydrangea species of Central and South America and discuss the taxonomical situation of two Colombian Hydrangeas, including an identification key, illustrations, and distribution maps. Field work was carried out in Costa Rica, Panama, Ecuador and Peru, including exploration in areas where the genus had not been collected before. These specimens and observations were complemented with the study of specimens of 41 herbaria of North, Central and South America, as well as Europe. Detailed morphological studies of all species were carried out, based on living plants in their natural habitat, as well as on dried specimens from our own collections and all available herbarium material. Type material was studied in detail for all species concerned. Based on an extensive number of morphological characters, combined with distribution patterns, phenological differences and ecological preferences, including molecular data in most cases, Hydrangea peruviana and H. oerstedii are clearly distinct taxa, as well as the other seven species mentioned here, which had been synonymized with either of these two species. The present study results in the recognition of 26 species in section Cornidia and exemplifies the urgent need for profound taxonomic studies in plants, as in many families we do not dispose of well-circumscribed units for conservation to mitigate the already occurring unprecedented loss of biodiversity.

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Molecular phylogenetics and new (infra)generic classification to alleviate polyphyly in tribe Hydrangeeae (Cornales: Hydrangeaceae)

Cited by 34 publications

References 38 publications

Phylogenetic relationships and generic re‐arrangements in “South Andean Loasas” (Loasaceae)

Phylogenetic relationships and generic re‐arrangements in “South Andean Loasas” (Loasaceae)

Phylogenetic Classification of Seed Plants of Taiwan

On Hydrangea peruviana, an endangered species from Ecuador, and Hydrangea oerstedii, very common in Costa Rica and Panama, and seven threatened Central and South American Hydrangeas, which have been confounded with these

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