The Rediscovery of Plagiolirion horsmannii Baker (Amaryllidaceae)

Meerow, Alan W.; Silverstone-Sopkin, Philip A.

doi:10.2307/2807573

Cited by 4 publications

(5 citation statements)

References 4 publications

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“…E. dodsonii, misdiagnosed as a Eucrosia because of its long exerted stamens, despite its mesic ecology (Meerow and Dehgan, 1985) and small globose seeds (unknown at the time it was described), is analogous to the divergence of Urceolina from Eucharis, and even bears similar perigonal coloration as the former. Although he was wrong in regard to Mathieua and Plagiolirion (Meerow, 1987d;Meerow and Silverstone-Sopkin, 1995), we recognize the prescience of Traub (1971) in combining Caliphruria (less C. korsakoffii), Eucharis and Urceolina as the latter, and accept this clade as a single genus, Urceolina, now with the addition of E. dodsonii 5 (Figures 2-4, 7).…”

Section: Eucharideaementioning

confidence: 83%

“…The next branch is the monotypic Plagiolirion horsmannii, endemic to the Cauca valley of Colombia, and possibly of reticulate origin (Figure 7). This relict genus, most recently allied with Eucharis (Meerow and Silverstone-Sopkin, 1995), is a clear case of peripheral isolation. It adapted to lower and mid-montane rainforest understory of the Cauca valley, exhibiting some of the characters of Eucharis (thin-textured leaf laminae, ellipsoidal seeds with copious oily endosperm), which we interpret as convergences.…”

Section: Eucharideaementioning

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: Eucharideaementioning

confidence: 83%

Section: Eucharideaementioning

confidence: 99%

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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“…Fue encontrada originalmente por el colector alemán Friedrich Carl Lehmann en 1883, en el municipio de Roldanillo, en el departamento del Valle del Cauca. Sólo se colectó de nuevo más de 100 años después, y fue considerada extinta por la IUCN (International Union for the Conservation of Nature), hasta su redescubrimiento en el extremo norte del valle geográfico del río Cauca, en Risaralda, el 3 de junio de 1989 (Meerow & Silverstone-Sopkin, 1995). Actualmente se conoce de tres sitios, pero la población silvestre principal está reducida a sólo diez individuos (Hilda Sanint, com.…”

Section: Capítulounclassified

“…It was found originally by the German collector Carl Friedrich Lehmann in 1883 in the municipality of Roldanillo in the department of Valle del Cauca. It was not collected again for more than 100 years and was considered extinct by the IUCN (International Union for the Conservation of Nature), until its rediscovery at the northern end of the Cauca Valley in Risaralda on 3 June 1989 (Meerow & Silverstone-Sopkin, 1995). At present, it is known from three localities, but the main wild population is reduced to only ten individuals (Hilda Sanint, pers.…”

Section: A Comparison Among Four Species Of Amaryllidaceaementioning

confidence: 99%

Los muertos vivientes

Silverstone-Sopkin¹

2012

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La vegetación original del valle geográfico del río Cauca ha sido casi totalmente destruida; quedan solamente unas pocas manchas pequeñas de bosque. Algunas especies de plantas muy escasas todavía sobreviven en estas manchas, pero están condenadas a la extinción por la pérdida de sus dispersores, la endogamia, los efectos de borde, y eventos que ocurren al azar, como la caída de hojarasca o árboles sobre las plantas del sotobosque. Por eso estas especies se han llamado "los muertos vivientes". Una de las familias más escasas en el valle geográfico es Amaryllidaceae. En el departamento del Valle existen o existían ocho géneros silvestres de esta familia, con por lo menos diez especies. Todas están en grave peligro de extinción. Este libro presenta un estudio de cuatro de estas especies: Eucharis bonplandii, E. caucana, E. sanderi, y Plagiolirion horsmannii. Con base en diecinueve años de investigación, se presenta información sobre la fenología, ecología de polinización, supervivencia, dispersión, y posible pérdida de dispersores de algunas de estas especies. Se presentan fotos de estas especies y claves a los géneros silvestres y cultivados de Amaryllidaceae del departamento del Valle y a las especies e híbridos del género Eucharis que se encuentran en este departamento. El autor considera que la pérdida de dispersores se pondrá común en manchas pequeñas de bosques tropicales en el futuro, y que la única manera de salvar estas especies escasas de plantas de la extinción es cultivarlas ex situ. LOS MUERTOS VIVIENTESLa historia natural de cuatro lirios amazónicos del suroccidente de Colombia (Eucharis y Plagiolirion, Amaryllidaceae) THE LIVING DEADThe natural history of four amazon lilies of southwestern Colombia (Eucharis and Plagiolirion, Amaryllidaceae)Colección Ciencias Naturales y Exactas LOS MUERTOS VIVIENTESLa historia natural de cuatro lirios amazónicos del suroccidente de Colombia

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“…Amaryllidaceae J. St.-Hil. is a cosmopolitan family represented in Colombia by nine native genera and 26 native species, including a monotypic endemic genus, Plagiolirion Baker (Meerow and Silverstone-Sopkin 1995). Some of the Colombian species have restricted ranges and are in danger of extinction or may already be extinct (Silverstone-Sopkin 2011).…”

Section: Introductionmentioning

confidence: 99%

A remarkable new species of Pamianthe (Amaryllidaceae) from the Department of Cauca, Colombia

Meerow¹,

Silverstone-Sopkin²,

Zuluaga-Tróchez³

et al. 2019

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A new saxicolous species of Amaryllidaceae tentatively assigned to the tribe Clinantheae, Pamiantheecollis Silverst., Meerow & Sánchez-Taborda, is described from the western slope of the Cordillera Occidental in the department of Cauca, Colombia. The new species differs from the two hitherto known species of Pamianthe in its yellow flowers and in its nearly obsolete perianth tube. The near loss of the perianth tube may be correlated with a change in pollinator. The new species lacks a bulb; it produces a large number of winged seeds that are wind-dispersed. A key to the species of Pamianthe is provided. This is the first record of the genus Pamianthe for Colombia. The phylogenetic position of the genus Pamianthe is discussed.

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The Rediscovery of Plagiolirion horsmannii Baker (Amaryllidaceae)

Cited by 4 publications

References 4 publications

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

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

Los muertos vivientes

A remarkable new species of Pamianthe (Amaryllidaceae) from the Department of Cauca, Colombia

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