Reassignment of Species of Paraphyletic Junellia s. l. to the New Genus Mulguraea (Verbenaceae) and New Circumscription of Genus Junellia: Molecular and Morphological Congruence
2009
Abstract Verbenaceae tribe Verbeneae includes three major genera, Verbena, Glandularia, and Junellia, which form a recently diversified group. Junellia is a South American genus, whereas Verbena and Glandularia are distributed in temperate regions of both South and North America. Seven noncoding chloroplast regions were sequenced including intergenic spacers and/or introns in trnD-trnT, trnS-trnG, trnS-trnfM, trnT-trnL, trnG, trnL, and trnL-trnF; the nuclear ITS and ETS regions were also sequenced. Together with previous studies, these results suggest that Junellia, as traditionally conceived, is a paraphyletic group of two separate clades. Junellia should be restricted to the clade containing the type, J. micrantha, which also includes Glandularia subgenus Paraglandularia and the genus Urbania. Consequently Urbania and Glandularia subgenus Paraglandularia are reduced to synonymy under Junellia, and eight new combinations in Junellia are proposed: Junellia ballsii, J. crithmifolia, J. fasciculata, J. hook...
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