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- Title
El uso de espinas del tallo en la identificación de las especies de Neobuxbaumia (Cactaceae).
- Authors
Tapia, Héctor J.; Arias, Salvador; Yáñez-Espinosa, Laura; Terrazas, Teresa
- Abstract
This study evaluated the morphometry of spine variables, orientation and length, in order to investigate the utility of spination patterns for species identification within the genus Neobuxbaumia (Cactaceae: Cactoideae: Echinocereeae). This analysis is based on a traditional taxonomic identification method and on multivariate statistical tools. Spine variables were recorded on preset categories relying on the areole organization. We obtained basic circular descriptive statistics and built graphs representing the spination pattern of each species. Canonical discriminant and classificatory analyses were applied from an -a priori- assignation of species. The ability to assign individuals to their species was 89.6%, on average. The orientation and length of the spines showed potential to identify most of the species of Neobuxbaumia, as well as the related species Pseudomitrocereus fulviceps. The complementary use of other vegetative morphological characters enables a more robust identification of species, as reflected on the identification key included. The recognition of spination patterns is considered of taxonomic value to identify species in other cacti groups in absence of reproductive structures.
- Subjects
CACTUS; PLANT morphology; MORPHOMETRICS; PACHYCEREUS; TAXONOMIC logic
- Publication
Revista Mexicana de Biodiversidad, 2016, Vol 87, Issue 2, p288
- ISSN
1870-3453
- Publication type
Article
- DOI
10.1016/j.rmb.2016.04.006