A New Species in the &lt;I&gt;Matelea palustris&lt;/I&gt; Complex (Apocynaceae, Asclepiadeae) and a Synopsis of the Complex in the Guianas and Northern Brazil

Krings, Alexander; Morillo, Gilberto

doi:10.1600/036364415x686521

Cited by 8 publications

(6 citation statements)

References 16 publications

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“…(Alvarado-Cárdenas and Cortez, 2022), or established new genera (Morillo, 2012(Morillo, , 2013(Morillo, , 2015(Morillo, , 2016(Morillo, , 2023aMorillo et al, 2013Mangelsdorff et al, 2016;Keller and Liede-Schumann, 2020;Alvarado-Cárdenas, 2021). It has been suggested that Matelea s.s. (sensu Krings and Morillo, 2015;Morillo, 2015;Morillo et al, 2017Morillo et al, , 2023 only contains around 20 species, morphologically consistent with the type species M. palustris Aubl. (Stevens, 2001;Krings and Morillo, 2015).…”

Section: Introductionsupporting

confidence: 56%

“…It has been suggested that Matelea s.s. (sensu Krings and Morillo, 2015;Morillo, 2015;Morillo et al, 2017Morillo et al, , 2023 only contains around 20 species, morphologically consistent with the type species M. palustris Aubl. (Stevens, 2001;Krings and Morillo, 2015). However, generic circumscriptions are far from settled as several recent resurrections provided limited, if any, molecular evidence.…”

Section: Introductionsupporting

confidence: 56%

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Systematics of Urostephanus: resurrection of a Mesoamerican taxon of Gonolobinae (Apocynaceae, Asclepiadoideae), with eight new combinations

González-Martínez,

Lozada-Pérez,

Olson

et al. 2024

Acta Bot. Mex.

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Background and Aims: Recent studies have focused on resolving the systematics of the tribe Gonolobinae of the family Apocynaceae, as well as the controversial genus Matelea s.l. However, many species within Matelea s.l. have not been evaluated phylogenetically. This is the case of M. gonoloboides, previously recognized as the type species of Urostephanus, and other taxa with similar floral morphology. The aim of this study is to test the monophyly of Urostephanus, including some species with morphology similar to M. gonoloboides. Furthermore, we evaluate the taxonomic position of the Urostephanus clade within the subtribe Gonolobinae and compare morphology among related clades. Methods: To assess phylogenetic relationships within Gonolobinae, we downloaded sequences from four loci for 94 species of the subtribe from GenBank. We extracted DNA and sequenced the trnL-F intergenic spacer and rps16 intron from four species of Dictyanthus and six species of Matelea, which are considered to belong to Urostephanus. We reconstructed the phylogeny with Bayesian inference using the maximum clade credibility tree. Based on the phylogenetic pattern, we performed morphological comparisons between the clades Dictyanthus, Polystemma, and Urostephanus. Key results: Phylogenetic analysis recovered Urostephanus as monophyletic and sister to Dictyanthus. Based on this phylogenetic pattern and floral morphology, we resurrect the genus Urostephanus. We propose eight new combinations for the species included in the phylogeny, as well as for those that share floral morphological similarity. We designate two lectotypes. Finally, we discuss aspects of morphology between Urostephanus and closely related groups. Conclusions: The current circumscription of Matelea s.l. includes species with high morphological diversity. With the phylogenetic and morphological evidence among related taxa, we support the resurrection of Urostephanus, more than 120 years after its description. These results contribute to the resolution of the systematics of Gonolobinae in Mesoamerica.

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Section: Introductionsupporting

confidence: 56%

Section: Introductionsupporting

confidence: 56%

Systematics of Urostephanus: resurrection of a Mesoamerican taxon of Gonolobinae (Apocynaceae, Asclepiadoideae), with eight new combinations

González-Martínez,

Lozada-Pérez,

Olson

et al. 2024

Acta Bot. Mex.

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“…is needed, as the concept for this and other genera in Gonolobinae has varied much in the past. Woodson's (1941) proposal for a very broad circumscription of the genus, meanwhile, has been rejected by several researchers, using morphological and phylogenetic studies in the subtribe Gonolobinae (Krings et al, 2008;Morillo, 2013Morillo, , 2015Krings & Morillo, 2015;Mangelsdorff et al, 2016;McDonnell et al, 2018;Liede-Schumann et al, in prep.). Based on the results of these studies, Matelea s. str.…”

mentioning

confidence: 99%

“…The description of Matelea s. str. is based on data from Krings et al (2008), Morillo (2013Morillo ( , 2015, and Krings and Morillo (2015).…”

mentioning

confidence: 99%

A New Species of Matelea (Apocynaceae, Gonolobinae) from Bolivia and an Assessment of Matelea in Bolivia

Morillo¹,

Meve

Liede‐Schumann

2023

novon

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Matelea anomala Morillo, Meve & Liede (Apocynaceae, Asclepiadeae, Gonolobinae) is here described and illustrated. The new taxon, known only from a single locality in eastern central Bolivia, is characterized by very small flowers with a campanulate corolla and recurved, abaxially pubescent and not ocellate corolla lobes, an annular corona with fimbriate-crenulate margins, and a terete stipe carrying the gynostegium. The new species is recognized in Matelea Aubl. s. str., for which a generic description is provided as well as a key to the species occurring in Bolivia.

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“…Matelea es un taxón de una circunscripción complicada, en el cual Woodson (1941) subordinó alrededor de 30 géneros como sinónimos y reconoció 13 subgéneros, y el número de especies que lo componen puede incluir más de 200 (Krings 2011. Se ha sugerido que el estudio detallado del mismo podría reducir su diversidad a no más de 30 especies (Stevens & Morales 2009, Morillo 2012, Krings & Morillo 2015, Lozada-Pérez & Alvarado-Cárdenas 2016. Aunque se está lejos de resolver la sistemática de este grupo, Stevens (1998), Krings (2011), Morillo (2015 y González-Martínez (2019), han realizado análisis filogenéticos que han contribuido en la resolución de la problemática de Matelea y grupos afines.…”

Section: Figura 1)unclassified

Apocináceas de ayer y hoy. Conocimiento histórico y reevaluación de la diversidad y distribución de Apocynaceae en México

Alvarado-Cárdenas¹,

Lozada‒Pérez²,

Islas-Hernández³

et al. 2020

Bot. Sci.

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Antecedentes: La familia Apocynaceae está entre las 13 más diversas de México y su conocimiento taxonómico ha tenido una atención creciente con la implementación de filogenias y otras herramientas para resolver su sistemática. Con más de 10 años del último listado enfocado en la familia, resulta necesario actualizar el conocimiento sistemático del grupo. Pregunta: ¿Cómo se ha consolidado hasta nuestros días el conocimiento sistemático del grupo en México? ¿Cómo ha cambiado el número de géneros y especies de Apocynaceae en el país y su distribución geográfica por estado? Especie de estudio: Apocynaceae Sitio de estudio: México Método: Revisión de herbarios nacionales e internacionales, bases de datos y una búsqueda intensiva de literatura. Así como colectas en diferentes partes del país. Resultados: Apocynaceae presenta 52 géneros y 418 especies nativas, 204 de ellas endémicas. La subfamilia Asclepiadoideae destaca con 27 géneros y 314 especies. Los estados con más especies y endemismos son Oaxaca, Chiapas, Veracruz y Guerrero. Los estados con más microendemismos son Oaxaca (18 spp.), Chiapas y Jalisco (6 spp.), Baja California Sur y Veracruz (5 spp.). Se proporciona una clave de géneros y un listado actualizado. Conclusiones: Apocynaceae se ubica en el lugar número 12 de las familias más diversas del país. Esto reitera al país como un centro de diversidad del grupo. La integración de más estudios relacionados a la aplicación de herramientas filogenéticas, modelos de distribución y redes de interacción biológica permitirá entender mejor a la familia y proporcionar una historia natural más completa.

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A New Species in the <I>Matelea palustris</I> Complex (Apocynaceae, Asclepiadeae) and a Synopsis of the Complex in the Guianas and Northern Brazil

Cited by 8 publications

References 16 publications

Systematics of Urostephanus: resurrection of a Mesoamerican taxon of Gonolobinae (Apocynaceae, Asclepiadoideae), with eight new combinations

Systematics of Urostephanus: resurrection of a Mesoamerican taxon of Gonolobinae (Apocynaceae, Asclepiadoideae), with eight new combinations

A New Species of Matelea (Apocynaceae, Gonolobinae) from Bolivia and an Assessment of Matelea in Bolivia

Apocináceas de ayer y hoy. Conocimiento histórico y reevaluación de la diversidad y distribución de Apocynaceae en México

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