Species delimitation in the Luziola peruviana (Poaceae) complex |
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Authors: | Jose L Martinez-y-Perez Victoria Sosa Teresa Mejia-Saules |
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Institution: | (1) Instituto de Ecologia, A.C. and Laboratorio de Sistemática, Centro de Investigación en Ciencias Biológicas, Universidad Autónoma de Tlaxcala, Apdo. Postal 65, 90000 Tlaxcala, Tlaxcala, Mexico;(2) Instituto de Ecologia, A.C. Apdo. Postal 63, 91000 Xalapa, Veracruz, Mexico |
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Abstract: | Luziola is a small genus from aquatic environments of the New World. The most widespread species in the genus isL. peruviana. Morphological variation has been documented for this species throughout its entire range of distribution, however this variation
has been difficult to characterize. A population aggregation analysis was performed in order to determine how many species
can be identified when analyzing characters from the individuals of this taxon as well as with individuals from closely related
taxa such asL. divergens, L. doelliana, andL. pittieri. Multivariate analysis, ANOVA and ANCOVA analyses were also performed to detect if quantitative morphological variation is
related to altitude and latitude. Results indicate that within this complex only one species should be recognized, referable
toL. peruviana, and that plants near the equator are larger, and have larger lemmas and paleas in both female and male flowers. An identification
key for the nine species now recognized inLuziola is included. |
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Keywords: | Population aggregation analysis Luziola seed micromorphology morphological variation Poaceae |
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