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. 2022 Mar 22:193:77-88.
doi: 10.3897/phytokeys.193.80327. eCollection 2022.

 Elsholtziazhongyangii (Lamiaceae), a new species from Sichuan, China

Xin-Jie Jin  1 , Yue Huang  1 , Yu-Kun Wei  2 , Qing Ma  3 , Lu-Xian Liu  4 , Zhi-Xi Fu  5 , Gui-Fang Wu  1 , Yong-Hua Zhang  1 , Pan Li  6
Affiliations

 Elsholtziazhongyangii (Lamiaceae), a new species from Sichuan, China

Xin-Jie Jin et al. PhytoKeys. .

Abstract

Elsholtziazhongyangii (Lamiaceae), a new species from Sichuan Province, China, is described and illustrated. The new species is morphologically similar to E.feddeif.feddei, but it can be easily distinguished from E.feddeif.feddei by smaller corolla (3.2-3.5 mm vs. 4.5-5.3 mm), bract indumentum (glabrous, except margin ciliate vs. villous, especially on veins abaxially, glabrous adaxially) and bract stalked (ca. 1.2 mm vs. sessile). Phylogenetic analyses, based on two nuclear ribosomal (ETS, ITS) and five plastid (rbcL, matK, trnL-F, ycf1, ycf1-rps15) regions, confirmed that the new species formed a monophyletic clade with robust support. The new species is currently known from western Sichuan.

Keywords: Aromatic plant; Elsholtzieae; phylogeny; taxonomy; traditional medicinal herbs.

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Figures

Figure 1.
Figure 1.
Distribution of Elsholtziazhongyangii Pan Li & X.J. Jin. The red stars indicate the recorded localities of E.zhongyangii.
Figure 2.
Figure 2.
The Maximum Likelihood tree, based on the combined ptDNA (ycf1, ycf1-rps15, rbcL, trnL-F, matK) and nrDNA (ITS, ETS) dataset without gap coding. Support values displayed on the branches follow the order ML-BS/BI-PP (“-” indicates support values of less than 75% or less than 0.85).
Figure 3.
Figure 3.
Elsholtziazhongyangii sp. nov. A blooming plant B front view of inflorescence C dorsal view of inflorescence D side view of inflorescence E cyme F bract G flower H side view of flower I front part of flower J villous outside corolla K dissected corolla L pilose annulate inside M ovary 4-cleft, 1 nectary rises on the edge of the ovary N outside of calyx O nutlet (with mucilage) P adaxial surface of leaf Q abaxial surface of leaf. Photos by Xin-Jie Jin & Pan Li.
Figure 4.
Figure 4.
Four other sympatric or morphologically similar species AElsholtziaciliataBElsholtziasplendensCElsholtziafeddeif.feddeiDElsholtziafeddeif.robusta. Photos by Pan Li.
Figure 5.
Figure 5.
Illustration of Elsholtziazhongyangii Pan Li & X.J. Jin A the whole plant B cyme C bract D outside of calyx E flowers and villous outside corolla F dissected corolla G pilose annulate inside. Drawn by Xin-Jie Jin.
See this image and copyright information in PMC

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