Flower of the heart, Magnolia yajlachhi (subsect. Talauma, Magnoliaceae), a new species of ceremonial, medicinal, conservation and nurse tree relevance in the Zapotec culture, Sierra Norte de Oaxaca, Mexico

Domínguez-Yescas, Reyna; Vázquez-García, J. Antonio

doi:10.11646/phytotaxa.393.1.2

Cited by 13 publications

(11 citation statements)

References 7 publications

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“…The POWO reconciliation was run on 19 March 2019 for the vast majority of the species (99%). For the few species that were not found in POWO we followed Tropicos (Missouri Botanical Garden, 2020) and Villaseñor (2016) except for two species (Magnolia yajlachhi and Populus primaveralepensis) described in 2019 (Dominguez-Yescas & Vázquez-García, 2019;Vázquez-García et al, 2019).…”

Section: Species Listmentioning

confidence: 99%

Native trees of Mexico: diversity, distribution, uses and conservation

Téllez‐Valdés

Mattana

Diazgranados

et al. 2020

PeerJ

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Background Mexico is one of the most floristically rich countries in the world. Despite significant contributions made on the understanding of its unique flora, the knowledge on its diversity, geographic distribution and human uses, is still largely fragmented. Unfortunately, deforestation is heavily impacting this country and native tree species are under threat. The loss of trees has a direct impact on vital ecosystem services, affecting the natural capital of Mexico and people’s livelihoods. Given the importance of trees in Mexico for many aspects of human well-being, it is critical to have a more complete understanding of their diversity, distribution, traditional uses and conservation status. We aimed to produce the most comprehensive database and catalogue on native trees of Mexico by filling those gaps, to support their in situ and ex situ conservation, promote their sustainable use, and inform reforestation and livelihoods programmes. Methods A database with all the tree species reported for Mexico was prepared by compiling information from herbaria and reviewing the available floras. Species names were reconciled and various specialised sources were used to extract additional species information, i.e. endemic status, threat status, availability in seed collections, reports on plant uses and conservation actions currently in place. With this information, a comprehensive catalogue of native trees from Mexico was redacted. Available georeferenced records were used to map each species distribution and perform spatial analyses to identify gaps of information and priority areas for their conservation and exploration. Results Mexico has at least 2,885 native tree species, belonging to 612 genera and 128 families. Fabaceae is the most represented family and Quercus the most represented genus. Approximately 44% of tree species are endemic to the country. The southern part of the country showed the highest values of species richness. Six hundred and seventy-four species have at least one documented human use. In terms of conservation assessment, ca. 33% of species have been assessed by either the IUCN Red List (919) or the National protection catalogue “NORMA Oficial Mexicana NOM-059” (29) or both (45). Additionally, 98 species have been included in the CITES listing for protection. In terms of existing conservation efforts, 19% of species have ex situ protection in seed banks, while protected areas overlap with all the identified peaks of species richness, except for those in the states of Veracruz and Chiapas. This work constitutes a key milestone for the knowledge, management, and conservation of the Mexican native trees. The two areas with high density of tree species identified in Veracruz and Chiapas represent two priority areas for tree conservation in Mexico, where integrated in situ and ex situ conservation efforts should be focused.

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Section: Species Listmentioning

confidence: 99%

Native trees of Mexico: diversity, distribution, uses and conservation

Téllez‐Valdés

Mattana

Diazgranados

et al. 2020

PeerJ

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“…Distributed from temperate to tropical areas of the Americas and Asia, they have an extraordinary value in horticulture, they are harvested from natural forests, either as a beauty item for solemn ceremonial rites or as a source of wood for construction, food, and traditional medicine [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…Baill. [3,10] with 13 species mostly of ventral dehiscence [2] and M. sect. Magnolia with 18 species of dorsal dehiscence [11,12].…”

Section: Introductionmentioning

confidence: 99%

How to Save Endangered Magnolias? From Population Biology to Conservation Action: The Case of Allopatric Radiation in Western Mexico

Vázquez-García¹,

Muñiz-Castro²,

Dahua-Machoa³

et al. 2021

Endangered Plants

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Numerous Neotropical Magnolia species are endangered and red-listed by the IUCN. Here we highlight major results from over a decade of research on endangered magnolias in western Mexico. Particularly, we compare three species of Magnolia (M. pugana, M. pacifica and M. vallartensis) along a large-scale continentality and moisture gradients, in terms of a) their morphological adaptations, b) genetic structure, diversity, and differentiation, c) reproductive phenology, and d) floral scents and their floral visitors. Fieldwork along this gradient unveiled two new species of Magnolia sect. Magnolia; M. granbarrancae and M. talpana. We found that most continental populations have a higher extinction risk than those with greater maritime influence, due to their lower genetic diversity, and greater fragmentation, isolation, and water stress. Also, these populations are more vulnerable to the environmental conditions predicted with the global warming climate scenarios. We share fieldwork experience and advise on pre-germination treatments and seed dormancy. We propose an ex-situ and in-situ conservation strategy, identify new challenges, and suggest future directions of collaborative work as a global Magnolia conservation consortium.

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“…As a result of the very short protologue descriptions of four of the five recently described section Talauma species in Veracruz and the often contradicting carpel numbers in the available identification keys [ 32 , 33 ], their circumscription is no longer clear. Moreover, some of the species descriptions are based on few specimens [ 27 , 28 ], or in the case of M. mexicana that was described in 1893, it is based on a scientific illustration [ 34 , 35 , 36 , 37 ].…”

Section: Introductionmentioning

confidence: 99%

Disentangling Species Delineation and Guiding Conservation of Endangered Magnolias in Veracruz, Mexico

Núñez

Veltjen

Salas

et al. 2021

Plants

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The Mexican state of Veracruz has suffered very high deforestation rates in the last few decades, and despite the establishment of protected areas and conservation projects, primary forest is now mainly persisting in mostly small, scattered, fragmented remnants. New species of Magnolia section Talauma in this state have been described with little to no reference to the already existing ones, potentially resulting in over-splitting, obscuring their taxonomic delineation and conservation status, and consequently conservation programs. To study the conservation units and their genetic diversity, we here employ 15 microsatellite markers on a highly representative sampling of 254 individuals of what are presumed to be five Magnolia species. The results support at least three species and maximum five main conservation units. We propose downgrading the latter to four, given morphological, ecological, demographical, and geographical considerations. Two out of the three sympatrically occurring species in the rainforest in the Los Tuxtlas volcanic area have weak genetic evidence to be considered separate species. Similarly, the individuals in the Sierra de Zongolica in central Veracruz, who bear a very high morphological and genetic similarity to Magnolia mexicana, have weak genetic evidence to be recognised as a separate species. Nonetheless, the individuals could be identified as Magnolia decastroi based on morphology, and further research including the full range of this species is recommended.

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Flower of the heart, Magnolia yajlachhi (subsect. Talauma, Magnoliaceae), a new species of ceremonial, medicinal, conservation and nurse tree relevance in the Zapotec culture, Sierra Norte de Oaxaca, Mexico

Cited by 13 publications

References 7 publications

Native trees of Mexico: diversity, distribution, uses and conservation

Native trees of Mexico: diversity, distribution, uses and conservation

How to Save Endangered Magnolias? From Population Biology to Conservation Action: The Case of Allopatric Radiation in Western Mexico

Disentangling Species Delineation and Guiding Conservation of Endangered Magnolias in Veracruz, Mexico

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