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Authors = Mauricio Gerónimo Martínez-Martínez

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15 pages, 15311 KiB  
Article
Ceratozamia chinantlensis (Zamiaceae): A New Cycad Species from La Chinantla, Oaxaca, Mexico
by Miguel Angel Pérez-Farrera, Steven M. Ramirez-Oviedo, Mauricio Gerónimo Martínez-Martínez, Gaspar Moreno Mendez, Ana Guadalupe Rocha Loredo and José Said Gutiérrez-Ortega
Taxonomy 2024, 4(4), 733-747; https://doi.org/10.3390/taxonomy4040039 - 14 Oct 2024
Viewed by 2553
Abstract
Ceratozamia chinantlensis sp. nov., a new cliff-dwelling cycad species from Sierra de La Chinantla, Oaxaca, Mexico, is described and compared with its congeners. The species is morphologically similar to Ceratozamia zoquorum and Ceratozamia santillanii, two geographically distant species, yet it is [...] Read more.
Ceratozamia chinantlensis sp. nov., a new cliff-dwelling cycad species from Sierra de La Chinantla, Oaxaca, Mexico, is described and compared with its congeners. The species is morphologically similar to Ceratozamia zoquorum and Ceratozamia santillanii, two geographically distant species, yet it is effortlessly distinguishable from its most proximally geographic congeners. Ceratozamia chinantlensis can be recognized based on several qualitative traits, such as its very coriaceous, long, linear to oblanceolate leaflets. Also, it has bronze-colored emerging leaves and mature leaves with articulations of a light copper color. Compared with C. zoquorum and C. santillanii, C. chinantlensis has significantly longer and wider leaflets. C. chinantlensis should be considered a critically threatened species due to its limited number of populations and individuals. Habitat destruction—historically through the extraction of Dioscorea mexicana and Vanilla planifolia, along with ongoing coffee and corn plantations—is an ongoing threat that narrows its distribution range. Full article
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18 pages, 30084 KiB  
Article
Zamia magnifica (Zamiaceae, Cycadales): A New Rupicolous Cycad Species from Sierra Norte, Oaxaca, Mexico
by Miguel Angel Pérez-Farrera, José Said Gutiérrez-Ortega, Mauricio Gerónimo Martínez-Martínez and Michael Calonje
Taxonomy 2023, 3(2), 232-249; https://doi.org/10.3390/taxonomy3020017 - 8 May 2023
Cited by 6 | Viewed by 7924
Abstract
Zamia magnifica (Zamiaceae), a new species endemic to Sierra Norte, Oaxaca, Mexico, is described. Zamia magnifica is characterized by having a rupicolous habit, pendent leaves bearing leaflets that are densely tomentose and pink to caramel in color when emerging, and broad oblong leaflets [...] Read more.
Zamia magnifica (Zamiaceae), a new species endemic to Sierra Norte, Oaxaca, Mexico, is described. Zamia magnifica is characterized by having a rupicolous habit, pendent leaves bearing leaflets that are densely tomentose and pink to caramel in color when emerging, and broad oblong leaflets that are coriaceous in texture with few non-prominent denticulations and ovulate strobili with short (<4 cm) peduncles. It is compared to Z. furfuracea and Z. meermanii, the Mesoamerican Zamia species to which it shares the closest morphological resemblance. Full article
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