Out of the mud: two new species of Hippeastrum (Amaryllidaceae) from the Doce and Jequitinhonha River basins, Brazil

Campos-Rocha, Antônio; Meerow, Alan W.; Machado, Raquel Moura; Mayer, Juliana Lischka Sampaio; Mota, Rubens Custódio da; Fontana, André Paviotti; Ribeiro, Otávio B.C.; Garcı́a, N.; Dutilh, Julie Henriette Antoinette

doi:10.1007/s00606-022-01805-3

Cited by 2 publications

(3 citation statements)

References 126 publications

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“…ex Sweet in most recent classifications (Dahlgren et al 1985;Muller-Doblies & Muller-Doblies, 1996;Meerow & Snijman, 1998;García et al, 2019). ITS resolved monotypic Worsleya as the first branch in the tribe, and monotypic Cearanthes and Griffinia (16 species) as sister genera (Campos-Rocha et al, 2022b). A monograph of the tribe is underway (Campos-Rocha et al, 2018, 2019a.…”

Section: The American Cladementioning

confidence: 99%

“…Their results suggested that the genus is robustly monophyletic and originated in Brazil. Campos-Rocha et al (2022b), using 20 spp., further supported these results. García et al (2014;, using whole plastomes and multiple nuclear genes on a larger sampling of species, confirmed this.…”

Section: The American Cladementioning

confidence: 99%

“…Hippeastrum reticulatum Herb., with unusual fruit and seed morphology was sister to all other species of subg. Hippeastrum, recently displaced by the morphologically unusual H. velloziflorum Campos-Rocha & Meerow (Campos-Rocha et al, 2022b). The low rates of base substitution in both plastid and nrDNA sequences, and the consistent interfertility of species -well-mined by bulb breeders (Meerow, 2009)-suggest that the genus underwent a relatively recent radiation (Oliveira, 2012).…”

Section: The American Cladementioning

confidence: 99%

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Classification and phylogeny of Amaryllidaceae, the modern synthesis and the road ahead: a review

Meerow

2023

Bol. Soc. Argent. Bot.

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The classification and phylogenetic history of the Amaryllidaceae is reviewed since the dawn of molecular systematics in the 1990’s. The family is now recognized as comprising three subfamilies: Agapanthoideae, Allioideae, and Amaryllidoideae, of which the latter is the largest. The family likely had a Gondwanaland origin in what is now Africa. Agapanthoideae is monotypic, endemic to South Africa, and the first branch in the family tree of life; Allioidieae is sister to Amaryllidoideae. Four tribes are recognized in Allioideae: Allieae (monotypic, with nearly 1000 species of Allium across the Northern Hemisphere), Gilliesieae (5–7 genera in southern South America), Leucocoryneae (six genera mostly in southern South America), and Tulbaghieae (monotypic, with ca. 30 species endemic to South Africa). Amaryllidoideae is cosmopolitan, but mostly pantropical, consisting of 13 tribes. Centers of diversity occur in South Africa, South America and the Mediterranean region. The American clade is sister to the Eurasian clade (tribes Galantheae, Lycorideae, Narcisseae and Pancratieae) of the subfamily. The American Amaryllidoideae resolves as two monophyletic groups, 1) the hippeastroid clade (tribes Griffineae and Hippeastreae) and 2) the Andean tetraploid clade (tribes Clinantheae, Eucharideae, Eustephieae, and Hymenocallideae). Molecular analyses are reviewed for each main clade of the family, along with the resultant taxonomic changes. Directions for future studies are briefly discussed.

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Section: The American Cladementioning

confidence: 99%

Section: The American Cladementioning

confidence: 99%

Section: The American Cladementioning

confidence: 99%

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Classification and phylogeny of Amaryllidaceae, the modern synthesis and the road ahead: a review

Meerow

2023

Bol. Soc. Argent. Bot.

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To print in red ink: two new species of Hippeastrum (Amaryllidaceae) from the Brazilian Atlantic Forest

Campos-Rocha¹,

Meerow²,

Peixoto³

et al. 2023

plecevo

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Background and aims – The Atlantic Forest is among the five most important biodiversity hotspots in the world, harbouring one of the highest levels of endemism and species richness in the tropics. The region has been suggested as a centre of diversity for the genus Hippeastrum, which comprises about one hundred species distributed throughout the Neotropics. Due to its large and showy flowers, the genus is highly sought after by collectors and horticulturists around the world, with hundreds of hybrids produced and traded for centuries. However, most of its species are still known from only one or a few populations, and several are officially recognized as endangered. Monographic studies on the genus Hippeastrum in Brazil have revealed two likely microendemic new species from the Atlantic Forest. Material and methods – The morphological descriptions of the new species are based on herbarium specimens and cultivated plants, as well as in situ observations. Descriptions and measures were taken following standard procedures. Preliminary conservation assessments followed IUCN guidelines and criteria. Key results – Both species show typical morphology of the subgenus Hippeastrum, in which they should be placed. They can be distinguished from similar taxa, including some of the most widely distributed and known species of the genus, by several floral characters. Data on ecology, conservation, and photographs and illustrations are provided, as well as comparisons with related species. An identification key to the Brazilian Atlantic Forest species of Hippeastrum is provided, accompanied by photographs of these species in their natural habitats. Conclusion – The new species are considered critically endangered due to their single known location and small population size. The findings reinforce the need for continued sampling across different regions of the Atlantic Forest, as well as the importance of systematic studies conducted by specialist taxonomists.

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Out of the mud: two new species of Hippeastrum (Amaryllidaceae) from the Doce and Jequitinhonha River basins, Brazil

Cited by 2 publications

References 126 publications

Classification and phylogeny of Amaryllidaceae, the modern synthesis and the road ahead: a review

Classification and phylogeny of Amaryllidaceae, the modern synthesis and the road ahead: a review

To print in red ink: two new species of Hippeastrum (Amaryllidaceae) from the Brazilian Atlantic Forest

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