The species of Mentzelia (Loasaceae) in Mexico, part 2: Mentzelia section Bartonia
| Autor: | Carolina Granados Mendoza, John J. Schenk, Andres Eduardo Estrada-Castillón |
|---|---|
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Botanical Sciences. 99:897-909 |
| ISSN: | 2007-4476 2007-4298 |
| 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: | OpenAIRE |
| Externí odkaz: |
|