A morphometric analysis of theBonatea speciosacomplex (Orchidaceae) and its implications for species boundaries

Autor:	Steven D. Johnson, M. E. Ponsie, Trevor J. Edwards
Rok vydání:	2009
Předmět:	Orchidaceae Taxon biology Species level Bonatea speciosa Morphometric analysis Single entity Principal component analysis Botany Morphological variation Plant Science biology.organism_classification Ecology Evolution Behavior and Systematics
Zdroj:	Nordic Journal of Botany. 27:166-177
ISSN:	1756-1051 0107-055X
DOI:	10.1111/j.1756-1051.2008.00259.x
Popis:	Species boundaries in rapidly evolving lineages are often blurred, necessitating analysis of the full range of variation within a complex in order to identify traits that can be used to diagnose taxa. The delimitation of Bonatea speciosa (L. f.) Willd. has been controversial, as most, but not all, recent authors have included within the concept of this species several additional taxa that were formerly recognised at the species level, including Bonateaboltonii (Harv.) Bolus and Bonateaantennifera Rolfe. Morphological variation across the Bonateaspeciosa complex (Orchidaceae) was explored using principal component and cluster analysis. Scatter plots were used to identify characters that could potentially be used to diagnose taxa. These data support the recognition of three distinct species, B.speciosa, B.antennifera and B.boltonii, instead of a single entity. A taxonomic account of southern African taxa within the B. speciosa complex is presented.
Databáze:	OpenAIRE
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