@ARTICLE{TreeBASE2Ref20011, author = {Kuo-Hsiang Hung and Tzen-Yuh Chiang and Ching-I Peng and Tsai-Wen Hsu}, title = {Ludwigia pseudoalata sp. nov. (Onagraceae Section Microcarpium), a New Species of the Southeastern United States}, year = {2011}, keywords = {Ludwigia pseudoalata, monophyly, new species, nrITS sequences, Onagraceae, Section Microcrapium, systematics}, doi = {}, url = {http://}, pmid = {}, journal = {Systematic Botany }, volume = {}, number = {}, pages = {}, abstract = {A new species, Ludwigia pseudoalata (Onagraceae), of the Section Microcrapium was described based on the collections from the Southeastern United States. Phylogenetically the new taxon is closely related to L. alata. The aquatic species is characterized by having nearly smooth or slightly ridged stems, and sepals that are often longer than capsules. Reciprocal monophyly of sisters L. pseudoalata and L. alata was recovered and significantly supported based on nucleotide sequences of the nuclear ribosomal internal transcribed spacers (nrITS). Molecular dating revealed that the two species may have split for some 1.08 million years.} }

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