Generic classification of Amaryllidaceae tribe Hippeastreae

Garcı́a, N.; Meerow, Alan W.; Arroyo-Leuenberger, Silvia; Oliveira, Renata Souza de; Dutilh, Julie Henriette Antoinette; Soltis, Pamela S.; Judd, Walter S.

doi:10.1002/tax.12062

Cited by 34 publications

(53 citation statements)

References 44 publications

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“…It may be tempting for some taxonomic pundits to declare that there has been superfluous recognition of genera within the Andean clade, and suggest further mergers beyond our acceptance of Traub (1971) concept of Urceolina. We believe that would be an error of judgment that obscures the phylogenetic complexity of this Andean-centered polyploid radiation, could result in loss of information, confusion, and would create further nomenclatural chaos in a family already rife with it (García et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

“…Tocantinia (Ravenna) Nic. García (García et al, 2019). Huaylla et al (in press) lists eight species for the genus, but this may not reflect synonym in the absence of a thorough revision (Cowley, 1989).…”

Section: Eustephieaementioning

confidence: 99%

“…ex Sweet. (García et al, 2019). Several genera within the hippeastroid clade were recovered as polyphyletic (Rhodophiala C.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast to the Hippeastrinae, the Traubiinae exhibits a mostly tree-like pattern of evolution (García et al, 2017). García et al (2019) presented a new classification scheme for Hippeastreae that reflects its reticulate phylogeny.…”

Section: Introductionmentioning

confidence: 99%

“…with ITS ( Meerow et al, 2000 ) and the possibility of reticulate evolution (i.e., early hybridization) in these lineages was hypothesized ( Meerow, 2010 ; Meerow et al, 2000 ), and later confirmed with further analysis of plastome and multiple nuclear gene sequences ( García et al, 2014 , 2017 ). Hippeastreae constitutes two main clades, the subtribe Hippeastrinae Walp and the Chilean endemic subtribe Traubiinae D. & U. Müll.-Doblies ( García et al, 2014 , 2017 , 2019 ). In contrast to the Hippeastrinae, the Traubiinae exhibits a mostly tree-like pattern of evolution ( García et al, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

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Phylogenomics of the Andean Tetraploid Clade of the American Amaryllidaceae (Subfamily Amaryllidoideae): Unlocking a Polyploid Generic Radiation Abetted by Continental Geodynamics

2020

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One of the two major clades of the endemic American Amaryllidaceae subfam. Amaryllidoideae constitutes the tetraploid-derived (n = 23) Andean-centered tribes, most of which have 46 chromosomes. Despite progress in resolving phylogenetic relationships of the group with plastid and nrDNA, certain subclades were poorly resolved or weakly supported in those previous studies. Sequence capture using anchored hybrid enrichment was employed across 95 species of the clade along with five outgroups and generated sequences of 524 nuclear genes and a partial plastome. Maximum likelihood phylogenetic analyses were conducted on concatenated supermatrices, and coalescent-based species tree analyses were run on the gene trees, followed by hybridization network, age diversification and biogeographic analyses. The four tribes Clinantheae, Eucharideae, Eustephieae, and Hymenocallideae (sister to Clinantheae) are resolved in all analyses with > 90 and mostly 100% support, as are almost all genera within them. Nuclear gene supermatrix and species tree results were largely in concordance; however, some instances of cytonuclear discordance were evident. Hybridization network analysis identified significant reticulation in Clinanthus, Hymenocallis, Stenomesson and the subclade of Eucharideae comprising Eucharis, Caliphruria, and Urceolina. Our data support a previous treatment of the latter as a single genus, Urceolina, with the addition of Eucrosia dodsonii. Biogeographic analysis and penalized likelihood age estimation suggests an origin in the Cauca, Desert and Puna Neotropical bioprovinces for the complex in the mid-Oligocene, with more dispersals than vicariances in its history, but no extinctions. Hymenocallis represents the only instance of long-distance vicariance from the tropical Andean origin of its tribe Hymenocallideae. The absence of extinctions correlates with the lack of diversification rate shifts within the clade. The Eucharideae experienced a sudden lineage radiation ca. 10 Mya. We tie much of the divergences in the Andean-centered lineages to the rise of

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Section: Resultsmentioning

confidence: 99%

Section: Eustephieaementioning

confidence: 99%

“…ex Sweet. (García et al, 2019). Several genera within the hippeastroid clade were recovered as polyphyletic (Rhodophiala C.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Phylogenomics of the Andean Tetraploid Clade of the American Amaryllidaceae (Subfamily Amaryllidoideae): Unlocking a Polyploid Generic Radiation Abetted by Continental Geodynamics

2020

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Atacamallium minutiflorum (Amaryllidaceae, Allioideae), new genus and species from the coastal desert of northern Chile

Garcı́a

Sassone

Pinto³

et al. 2022

TAXON

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Atacamallium, a new genus in Amaryllidaceae‐Allioideae‐Leucocoryneae, is introduced with a description of its type Atacamallium minutiflorum, endemic to the coastal Atacama Desert of northern Chile. Phylogenetic analyses of DNA sequences, along with morphological characters and its distribution pattern, support the new genus and place it as a putative sister to Leucocoryne, which is readily distinguished from Atacamallium by its floral morphology. Atacamallium minutiflorum differs from other species of Leucocoryneae by its overall smaller flowers, tepals fused only at the base, six stamens in a single series, and trifid stigma. A morphological description, a distribution map, an illustration, and the assessment of the conservation status of the new species, besides an updated key to the genera of Leucocoryneae, are provided. Additional data from multiple single‐copy nuclear genes are needed to clarify the relationships within the tribe.

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