The species of Mentzelia (Loasaceae) in Mexico, part 2: Mentzelia section Bartonia
| Autor: | John Schenk, Carolina Granados Mendoza, Andres Eduardo Estrada-Castillón |
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| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Botanical Sciences, Vol 99, Iss 4 (2021) |
| Druh dokumentu: | article |
| ISSN: | 2007-4298 2007-4476 |
| DOI: | 10.17129/botsci.2828 |
| Popis: | Background: Mentzelia (Loasaceae) is primarily distributed in western North America. The genus is classified into six monophyletic sections, among which species of section Bartonia are particularly poorly understood. Questions: What species of Mentzelia section Bartonia occur in Mexico? What are the species distribution ranges and what are their defining attributes? Study species: Mentzelia section Bartonia. Methods: Field, herbarium, distribution, and scanning electron microscopy studies were conducted to assess species diversity. Seed coat microsculpture patterns were evaluated to confirm species identities and understand their distributions throughout Mexico. Results: Six species from section Bartonia were recognized, with taxa distributed into either the Chihuahuan or Sonoran deserts. Mentzelia longiloba var. pinacatensis is the only Mexican endemic. Conclusions: Although this work comprehensively addressed the species of section Bartonia in Mexico, two groups will continue to present identification challenges: the M. longiloba and M. mexicana-M. saxicola complexes. Overlapping and variable characters will continue to complicate species identification in the M. longiloba complex, while the late-season loss of primary leaves will obscure species identification between M. mexicana and M. saxicola. |
| Databáze: | Directory of Open Access Journals |
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