An Elegy to Rangaeris, Including a Description of Two New Genera in the Cyrtorchis–Tridactyle Clade (Orchidaceae, Angraecinae)

Farminhão, João N.M.; D'haijère, Tania; Droissart, Vincent; Isonga, Landry Dumbo; Dong, Le; Verlynde, Simon; Plunkett, Gregory M.; Simo‐Droissart, Murielle; Stévart, Tariq

doi:10.3417/2020472

Cited by 3 publications

(8 citation statements)

References 42 publications

(60 reference statements)

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“…Where possible, at least two specimens from each of the morphogroups included in the morphometric analysis were chosen for the phylogenetic study. Additional sequences produced during previous studies and available in GenBank (http://www.ncbi.nlm.nih.gov/genbank) were also used (Carlsward & al., 2006a,b; Simo‐Droissart & al., 2018a; D'haijère & al., 2019; Farminhão & al., 2020). Sixty‐nine Cyrtorchis accessions representing 21 morphogroups including 15 described taxa (7 out of 9 from C .…”

Section: Methodsmentioning

confidence: 99%

“…(2019) and Farminhão & al. (2020). Overall, DNA was extracted from fresh or silica‐gel dried samples using different methods for each type of leaf sample.…”

Section: Methodsmentioning

confidence: 99%

“…The indels (insertion/deletion markers) were treated as missing data. The produced sequences were added to the 71 sequences previously published in earlier studies (Carlsward & al., 2006a,b; Simo‐Droissart & al., 2018a, D'haijère & al., 2019; Farminhão & al., 2020) and available in GenBank with their species names updated in line with current taxonomic concepts.…”

Section: Methodsmentioning

confidence: 99%

“…In tropical Africa, Simo‐Droissart & al. (2018a), by providing a new molecular phylogenetic framework, have furthered our understanding of the taxonomy of continental African angraecoid orchids, and thus has enabled the taxonomic revision of many genera (Descourvières & al., 2018; Farminhão & al., 2018, 2020; Simo‐Droissart & al., 2018b,c; D'haijère & al., 2019). However, some genera are still in need of a taxonomic revision, as in the case of Cyrtorchis Schltr.…”

Section: Introductionmentioning

confidence: 99%

“…(2019) and Farminhão & al. (2020); (2) to test the monophyly of the subordinate taxa within the sections and thus clarify the species complexes in order to provide a clear differentiation of species within the genus; (3) to examine the evolution of key floral traits and assess their value in reconstructing relationships among sections and taxa.…”

Section: Introductionmentioning

confidence: 99%

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A near comprehensive phylogenetic framework gives new insights toward a natural classification of the African genus Cyrtorchis (Angraecinae, Orchidaceae)

Azandi

Droissart

Sonké

et al. 2021

TAXON

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The genus Cyrtorchis is renowned for its conspicuous white, long‐spurred flowers, but also for its challenging problems of species delimitation due to the great morphological resemblance of their flowers. Based on a preliminary visual inspection of 1752 specimens, 27 morphogroups were defined including 6 unpublished taxa. Then, we used a representative sampling of 171 dried and alcohol‐preserved specimens representing 20 morphogroups to perform linear morphometrics through multivariate analyses on 43 morphological characters in order to confirm morphogroups delineation and identify their discriminant characters. Moreover, the monophyly of the two sections and of 21 morphological entities was tested through molecular analyses in order to produce a natural classification of the genus. DNA sequences from 69 Cyrtorchis specimens belonging to 15 published taxa (seven from C. sect. Homocolleticon, eight from C. sect. Cyrtorchis), six putative new Cyrtorchis taxa, as well as four taxa used as outgroups, were produced using one nuclear (nrITS‐1) and five plastid regions (matK, rps16, trnC‐petN intergenic spacer, trnL‐trnF intergenic spacer, ycf1), and were analyzed using maximum likelihood and Bayesian approaches. We used this phylogenetic framework to infer the morphological character‐state evolution of six floral traits and assess their taxonomic value. Morphological analysis revealed two groups corresponding to the published sections. However, while molecular results recovered the monophyly of C. sect. Cyrtorchis, C. sect. Homocolleticon appears paraphyletic. Of the 21 morphologically defined taxa that were included in the molecular analyses, eight, namely C. aschersonii, C. henriquesiana, C. monteiroae, C. praetermissa, C. ringens, and three new taxa were proven monophyletic. The delimitation of the 19 remaining morphologically identified taxa was assessed using morphological approach only. The ancestral state reconstruction provided new insights into character‐state evolution in the genus by inferring the insertion point of the stipites at the rear third of the length of the viscidium as one of the main synapomorphic characters supporting the monophyly of the genus. Furthermore, viscidium structure, stipites shape, and the lateral lobes of the rostellum were found to be important to infer phylogenetic relationships within the genus.

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Section: Methodsmentioning

confidence: 99%

“…(2019) and Farminhão & al. (2020). Overall, DNA was extracted from fresh or silica‐gel dried samples using different methods for each type of leaf sample.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A near comprehensive phylogenetic framework gives new insights toward a natural classification of the African genus Cyrtorchis (Angraecinae, Orchidaceae)

Azandi

Droissart

Sonké

et al. 2021

TAXON

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Rapid radiation of angraecoids (Orchidaceae, Angraecinae) in tropical Africa characterised by multiple karyotypic shifts under major environmental instability

Farminhão

Verlynde

Kaymak

et al. 2021

Molecular Phylogenetics and Evolution

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A new Ypsilopus (Orchidaceae, Angraecinae) from Zimbabwe and notes on the parallel evolution of extreme column exsertion in African angraecoids

Farminhão,

Cribb

2023

plecevo

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Background and aims – A preliminary review of hawkmoth-pollinated angraecoids from Africa unveiled a remarkable case of parallel evolution of extreme column exsertion between the two species formerly classified in in the defunct genus Barombia. These belong to one clade of Aerangis, including A. gracillima and A. stelligera, and Ypsilopus sect. Barombiella, including Y. amaniensis and Y. schliebenii. The exploration of the geographical distribution of these two clades, followed by an examination of morphological variation within Y. sect. Barombiella, revealed that the disjunct population identified as Y. amaniensis from Zimbabwe represents an undescribed species. Material and methods – Occurrence records of Ypsilopus amaniensis, Y. schliebenii, Aerangis gracillima, and A. stelligera were comprehensively mapped and distribution patterns were visually analysed. Pollination syndromes and pollinaria attachment sites were inferred based on a review of floral and hawkmoth morphology. Standard herbarium practices and mining of photographs of wild and cultivated plants in social media allowed the description of the novelty. Key results – Ypsilopus zimbabweensis sp. nov. (Y. sect. Barombiella) is a narrow endemic of significant horticultural interest and it is preliminarily assessed as Endangered. The evolution of a Barombia-type column presents a parallel geographical pattern in the Aerangis gracillima–A. stelligera clade and Ypsilopus sect. Barombiella and probably induced a shift of pollen placement sites in these sphingophilous species.

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An Elegy to Rangaeris, Including a Description of Two New Genera in the Cyrtorchis–Tridactyle Clade (Orchidaceae, Angraecinae)

Cited by 3 publications

References 42 publications

A near comprehensive phylogenetic framework gives new insights toward a natural classification of the African genus Cyrtorchis (Angraecinae, Orchidaceae)

A near comprehensive phylogenetic framework gives new insights toward a natural classification of the African genus Cyrtorchis (Angraecinae, Orchidaceae)

Rapid radiation of angraecoids (Orchidaceae, Angraecinae) in tropical Africa characterised by multiple karyotypic shifts under major environmental instability

A new Ypsilopus (Orchidaceae, Angraecinae) from Zimbabwe and notes on the parallel evolution of extreme column exsertion in African angraecoids

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