Abstract
The genus Scutellaria comprises eight species distributed from 50 to 2000 m in Taiwan. Amongst them, S. barbata and S. taipeiensis are very similar on the basis of morphological and plastid DNA sequence information. Therefore, a comprehensive study of the taxonomic status of S. taipeiensis is necessary. We reviewed the herbarium sheets, related literature and protologues and compared morphologies of these two species, as well as their phylogenetic relationships. All evidence, including the diagnostic characters between S. taipeiensis and S. barbata, suggest that they belonged to a single species rather than two. As a result, S. taipeiensis is treated as a synonym of S. barbata.
Highlights
The genus Scutellaria L. is composed of approximately 360 species worldwide (Paton 1990; Li and Hedge 1994; Harley et al 2004)
Don and S. taipeiensis was conducted by Hsiung et al (2017) and the data showed no remarkable divergence between these two species
Leaf morphology had been regarded as a diagnostic character for distinguishing S. barbata from S. taipeiensis (Huang et al 2003)
Summary
The genus Scutellaria L. is composed of approximately 360 species worldwide (Paton 1990; Li and Hedge 1994; Harley et al 2004). The Taiwanese Scutellaria were revised in the 1990s, based on morphology and palynology and five species were recognised (Hsieh and Huang 1995). Don and S. taipeiensis was conducted by Hsiung et al (2017) and the data showed no remarkable divergence between these two species. These results attracted our attention to verify their findings. We revised the taxonomic status of S. taipeiensis after re-evaluating morphological and plastid DNA sequence evidence in this study
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