Abstract
A population ofSchisandra glabra (Schisandraceae) found in the cloud forest of northeastern Hidaglo state, Mexico, represents a new family for the Mexican flora and the first record for the species outside of the southeastern United States. Morphological comparisons of foliar and floral characteristics of this population with southeastern U.S. specimens reveal the material in both countries to be similar in morphology and apparently conspecific.Schisandra glabra is the only species of the family on the American continent. We speculate that the disjunct distribution of the Mexican population is the result of the gradual contraction of an otherwise wider distribution in connection with climatological changes associated with the Tertiary. The species is described and illustrated to familiarize students interested in the Mexican flora with the species and family.
Resumen
Reportamos el hallazgo de una población deSchisandra glabra (Schisandraceae) en el bosque mesófilo de montaña del noreste de Hidalgo, México. Este descubrimiento representa el primer registro de la especie hasta ahora considerada endémica al sureste de los Estados Unidos en México. La evaluación de la morfología vegetal y floral de esta población concuerda con la de las poblaciones en los Estados Unidos y por tanto consideramos a la población mexicana como conespecífica.Schisandra glabra es la única especie de la familia presente en el continente americano. Se especula que la distribución disyunta en México es el resultado de una contracción paulatina de otrora una distribución mas amplia como resultado de cambios climatológicos asociados con el Terciario. Describimos e ilustramos la especie para difundir el conocimiento de ésta a los especialistas en la flora mexicana.
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Panero, J.L., Aranda, P.D. The family Schisandraceae: a new record for the flora of Mexico. Brittonia 50, 87–90 (1998). https://doi.org/10.2307/2807721
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DOI: https://doi.org/10.2307/2807721