 |
| Ixeridium malingheense Z.Li & Q.Xu, in Xu, Yang, An, Yu, Liu et Li, 2024. |
Abstract
A new Asteraceae species, Ixeridium malingheense Z.Li & Q.Xu sp. nov., from Xingyi City, south-western Guizhou, China, is described and illustrated based on morphological and molecular analyses. Compared with the other species of the genus, the species is most similar to I. yunnanense in a small stature, linear-lanceolate stem leaves, and short phyllaries. However, it is easily distinguished from the latter by its smaller basal leaves 18–34 × 5–13 mm (vs. 10–25 × 5 mm), spatulate or long-spatulate (vs. elliptic, lanceolate, or oblanceolate), petioles ca. 30–55 mm (vs. 10 mm to absent), outer phyllaries 1-seriate (vs. 2-seriate, unequal), achenes smaller 2.0–3.0 × 0.5–1.0 mm (vs. 3.2 × 0.6 mm), and a flowering period of March to May (vs. June). Molecular phylogenetic analyses based on nuclear ITS sequence data determined the systematic position of I. malingheense in Ixeridium.
Asteraceae, Eudicots, Ixeridium, morphology, phylogeny, taxonomy
Ixeridium malingheense Z.Li & Q.Xu sp. nov.
Qin Xu, Long Yang, MingTai An, JiangHong Yu, Feng Liu and Zhi Li. 2024. Ixeridium malingheense (Asteraceae), A New Species from southwestern Guizhou, China. Phytotaxa. 645(2); 163-171. DOI: 10.11646/phytotaxa.645.2.5
