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| Mazus motuoensis W.B.Ju, Bo Xu bis & X.F.Gao, in Ju, Li, Deng, Li, He, Gao et Xu, 2023. |
Abstract
Mazus motuoensis W.B.Ju, Bo Xu bis & X.F.Gao is a newly described species found in Xizang Autonomous Region, China. Morphologically, this species differs from all the other known Mazus species by having erect perennial herb form with a rhizome, presence of multicellular hairs, without basal leaves, opposite arrangement of stem leaves, and corolla lobes with erose-toothed margins. Molecular phylogenetic analysis using nuclear and cpDNA genes suggests that this new species occupies a basal position within Mazus. In conclusion, both morphological evidence and molecular phylogenetic analyses support that this species belongs to Mazus and represents an as-yet-unreported new species with distinct differences from other species within the genus.
Key words: Mazus, molecular phylogenetics, morphology, taxonomy
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| Living images of Mazus motuoensis A habit B inflorescence in frontal view C inflorescence in rear view D rhizome. |
Mazus motuoensis W.B.Ju, Bo Xu bis & X.F.Gao, sp. nov.
Diagnosis: The new species is distinguished from congeneric species by its rhizomes, perennial herb covered with multicellular white villus, erect and unbranched stems, having no basal leaves, stem leaves opposite, subsessile, lower lobes margins erose-toothed.
Etymology: The specific epithet “motuoensis” refers to the locality, Motuo County, Xizang, China.
Vernacular name: Simplified Chinese: 墨脱通泉草; Chinese pinyin: Mòtuō Tōngquáncǎo.
Wen-Bin Ju, Xiong Li, Heng-Ning Deng, Meng Li, Xing-Jin He, Xin-Fen Gao and Bo Xu. 2023. Mazus motuoensis (Mazaceae), A New Species from Xizang, China. PhytoKeys. 235: 69-79. DOI: 10.3897/phytokeys.235.111092
