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Taxonomic status of Quercus acerifolia (Fagaceae) and a morphological comparison of four members of the Quercus shumardii complex



Taxonomic status of Quercus acerifolia (Fagaceae) and a morphological comparison of four members of the Quercus shumardii complex



Systematic Botany 23(1): 89-100



E.J. Palmer described a "very distinct looking Oak" from the bluffs of Magazine Mountain, Arkansas and named it Quercus shumardii var. acerifolia in reference to its sugar maple-like leaf shape. Our focus has been to determine the appropriate taxonomic level for recognition of this plant. Using cluster analyses and multiple discriminant function analyses of vegetative and reproductive characters we have compared Quercus shumardii, Q. buckleyi, Q. texana, and the maple-leaf oak. Cluster analyses segregated maple-leaf oak from Q. shumardii and the other two recognized taxa. Multiple discriminant function analyses correctly classified maple-leaf oak specimens 95% of the time when acorn and leaf data were considered separately and 100% of the time when acorn and leaf data were considered together. Based upon these numerical analyses and the evaluation of descriptive characters presented herein, Q. acerifolia is shown to be as distinct from the other three taxa as they are from each other. The results presented support the recognition of the maple-leaf oak at the species level.

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Accession: 003292942

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DOI: 10.2307/2419576


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