Polygala Minima (polygalaceae) in Western Mexico
نویسنده
چکیده
The widespread Neotropical species Polygala glochidiata has traditionally been considered the only Polygala with uncinate seed hairs to occur in Mexico. A second species with such hairs is shown to occur partly sympatrically with P. glochidiata in Jalisco and Nayarit and is referred to P. minima, heretofore considered to be a species restricted to southern Brazil, Paraguay, and northern Argentina. A single collection from the state of México is also referred to P. minima, while the situation from Oaxaca southeastward into Central America is more complex. Patterns of variation in the P. glochidiata complex require further study, but data are presented to dispute the synonymization of P. minima into P. glochidiata by Bernardi. Resumen: Polygala glochidiata, especie neotropical de amplia distribución, ha sido considerada tradicionalmente como la única especie mexicana de Polygala con pelos uncinados en la semilla. Sin embargo, una segunda especie con pelos de este tipo se encuentra en Jalisco y Nayarit y es parcialmente simpátrica con P. glochidiata. Se considera a esta segunda especie como coespecı́fica con P. minima, una especie anteriormente tratada como restringida al sur de Brasil, Paraguay y el norte de Argentina. Además se considera una sola recolección del estado de México como P. minima, mientras que la situación desde Oaxaca hasta Centroamérica es más complicada. Los patrones de variación en el complejo de P. glochidiata requieren más estudio; sin embargo, se presentan datos en contra de la sinonimización, efectuada por Bernardi, de P. minima con P. glochidiata.
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