Josefa Anahí Espinosa-Jiménez scite author profile

Josefa Anahí Espinosa-Jiménez

5Publications

19Citation Statements Received

0Citation Statements Given

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Universidad de Ciencias y Artes de Chiapas

Publications

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Magnolia perezfarrerae a new species and a key to Mexican species of Magnolia section Talauma subsection Talauma (Magnoliaceae)

et al. 2013

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A new rainforest species of Magnolia , from the eastern Selva Zoque of Chiapas, Mexico, is described and illustrated. Magnolia perezfarrerae belongs to section Talauma , subsection Talauma . It differs from M . equatorialis in having shorter leaf blades that are elliptic rather than lanceolate, longer petioles, and much shorter apices of the carpels. Unlike any published Mexican species of subsection Talauma , this new species presents a circumcissile dehiscence with abaxial portions of carpels detaching in large irregular and united many-carpelled masses, a trait shared with several Amazonian Magnolia . The flowers are used and valued by the Zoque culture for medicinal purposes.

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Inventario Florístico del Parque Nacional Cañón del Sumidero, Chiapas, México

2011

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Resumen: Se realizó el inventario florístico del Parque Nacional Cañón del Sumidero, Chiapas, México. Treinta y tres salidas de campo se hicieron de 2007 a 2008 y se consultaron y revisaron bases de datos de herbarios. Se registraron 1,298 especies, 632 géneros, 135 familias y 58 infraespecies. Las familias más representativas corresponden a Fabaceae (126 especies y 52 géneros) y Asteraceae (107 especies y 65 géneros). Los géneros más diversos fueron Ipomoea (18), Tillandsia (17) y Peperomia (16). Además, 625 especies se clasificaron como hierbas y 1,179 especies como autótrofas. El bosque tropical caducifolio fue el más diverso con 30.91% de las especies reportadas. Dentro de alguna categoría de riesgo dentro de la NOM-ECOL-059-2010 se registraron 24 especies y 2.6% de la flora del Cañón del Sumidero es endémica de Chiapas. Dos especies, Valeriana palmeri A. Gray y Dioon sp., posiblemente están extintas en el área de estudio. Palabras clave: área natural protegida, base de datos, bosque tropical caducifolio, endemismo, riqueza. Abstract:A floristic inventory was conducted in the Sumidero Canyon National Park, Chiapas, Mexico. Thirty-three field trips were conducted from 2007 to 2008 and the revision of herbaria data bases. About 1,298 species and 58 infraspecies were recorded among 632 genera and 135 families. The most representative families were Fabaceae (126 species with 52 genera) and Asteraceae (with 107 species and 65 genera). The most diverse genera were Ipomoea (18), Tillandsia (17), and Peperomia (16). In addition, 625 species were classified as herbs and 1,179 species were terrestrial autotrophic. Tropical deciduous forest was the most diverse with 30.91% of the species reported. About 24 species were recorded under some level of threat-risk within the official threatened species list NOM-ECOL-059-2010 and 2.6% of the flora reported in the Sumidero Canyon is endemic to Chiapas. Two species, Valeriana palmeri A. Gray and Dioon sp., are thought possibly extinct in the study area.

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Inventario florístico de la cañada La Chacona–Juan Crispín y zonas adyacentes, Depresión Central de Chiapas, México

et al. 2014

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Se presenta un listado florístico de la Cañada La Chacona-Juan Crispín, Chiapas, dentro de los municipios de San Fernando, Tuxtla Gutiérrez y Berriozábal, Chiapas. Se reportan 642 especies y 31 infraespecies, agrupadas en 107 familias y 412 géneros. En Bosque Tropical Caducifolio, Bosque Tropical Subcaducifolio y Bosque de Quercus dentro de los municipios de San Fernando, Tuxtla Gutiérrez y Berriozábal, Chiapas. El Bosque tropical caducifolio fue el de mayor riqueza. Las familias mejor representadas fueron Fabaceae, Asteraceae y Euphorbiaceae. Tillandsia, Eugenia y Euphorbia fueron los géneros con un mayor número de especies. Las hierbas conformaron la forma de crecimiento más abundante (34.4%). Se encontraron 13 especies endémicas a Chiapas y 19 de distribución restringida. Quince especies están en alguna categoría de riesgo dentro de la Norma Oficial Mexicana (NOM-059-SEMARNAT-2010) y 12 se encuentran en la Lista Roja de la Unión Internacional para la Conservación de la Naturaleza. Aunque el grado de perturbación de la zona es alto, el área es importante por su riqueza de especies y presencia de endemismos.

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Living on the rocks: a new species of Stenanona (Annonaceae) from karst limestone forests of southern Mexico

et al. 2018

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Based on morphological and phylogenetic evidence, a new species of Stenanona endemic to the karst limestone forests from southern Mexico is described and illustrated. The new species is placed in the Desmopsis-Stenanona clade and appears to be closely related to Stenanona migueliana and S. stenopetala, from which it differs in flower colour, petal margins, petal venation, sepal length and ovule arrangement. Phylogenetic relationships, evolution and conservation status of the new species are discussed.

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Taxonomic novelties within a non‐monophyletic lineage: a new Mexican species of Desmopsis (Annonaceae)

Espinosa-Jiménez

Ortiz-Rodríguez

2020

Nordic Journal of Botany

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A new species of Annonaceae endemic to Mexico is described and illustrated. Desmopsis dubia sp. nov. is placed within the Desmopsis–Stenanona clade and is clearly different from all other species of Neotropical Miliuseae by the combination of lower surface of leaves pubescent; tertiary venation strongly percurrent; leafy bracts absent at the base of the pedicels; sepals connate at the base and persistent in fruit; petals fleshy and stiff, elliptic to ovate with food bodies at the base of the inner ones; and cylindrical monocarps with ligneous exocarp. We discuss its phylogenetic relationships and placement within the genus Desmopsis and a key to the Mexican species of Desmopsis and Stenanona with yellow or greenish petals is provided.

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