The identity of Senecio lancifer (Asteraceae, Senecioneae)

Wang, Long; Tong, Tian-Jing; Ren, Chen; Yang, Qin‐Er

doi:10.11646/phytotaxa.282.1.10

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…Liu” in S.W. Liu, 1989; Illarionova, 2008b; and Chen & al., 2011; but see Wang & al., 2016a,b), endemic to eastern Xizang (Tibet) in southwestern China, while all others are distributed in eastern Central Asia and adjacent regions (S.W. Liu, 1989; Illarionova, 2008b; Chen & al., 2011).…”

Section: Introductionmentioning

confidence: 99%

Circumscription and phylogenetic position of Ligularia sect. Stenostegia (Asteraceae: Senecioneae) based on morphological, cytological, and molecular phylogenetic evidence

Ren

Wang

Illarionova

et al. 2020

TAXON

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Ligularia sect. Stenostegia (Asteraceae: Senecioneae) has been questioned about its monophyly and phylogenetic position in our previous study. To settle the dispute, we here verify the phylogenetic pattern of L. sect. Stenostegia with a much denser taxon sampling in the section. The results have corroborated our previous hypothesis, by showing that L. sect. Stenostegia is monophyletic only after excluding L. lancifera, and that the core L. sect. Stenostegia is more closely related to Parasenecio and Sinacalia than to Ligularia. The relationships are further supported by evidence from morphology and geographical distribution, and the results of cytological studies and statistical topology tests in this study. The core L. sect. Stenostegia, with the absence of expanded leaf sheaths and a base chromosome number of x = 30, is substantially different from Ligularia, while congruent with Parasenecio and Sinacalia. Its concentrated distribution in eastern Central Asia also readily sets it apart from Ligularia, which is mainly distributed in eastern Asia, with the center of species diversity in the Himalayas and the Hengduan Mountains region in southwestern China. In contrast, L. lancifera has greatly expanded leaf sheaths, a chromosome number of 2n = 58, and a distribution in eastern Xizang (Tibet) in China, all perfectly matching the features of Ligularia. The AU and SOWH statistical topology tests also strongly favor this phylogenetic hypothesis, by significantly rejecting the alternative hypotheses in current classification. Based on all the evidence, L. lancifera is excluded from L. sect. Stenostegia, and the core L. sect. Stenostegia is segregated as an independent genus of its own, with a new name Vickifunkia. Keywords central Asia; chromosome number; eastern Asia; statistical topology test; Tussilagininae; Vickifunkia Supporting Information may be found online in the Supporting Information section at the end of the article.

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Section: Introductionmentioning

confidence: 99%

Circumscription and phylogenetic position of Ligularia sect. Stenostegia (Asteraceae: Senecioneae) based on morphological, cytological, and molecular phylogenetic evidence

Ren

Wang

Illarionova

et al. 2020

TAXON

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Ligularia dalaolingensis sp. nov. (Asteraceae–Senecioneae) from central China

Fei

Chen

Yang

et al. 2019

Nordic Journal of Botany

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Ligularia dalaolingensis, a new species from Hubei and Hunan, China, is described and illustrated. It belongs to L. sect. Ligularia ser. Speciosae on the basis of its palmate leaf venation, racemose synflorescence and pappus which is slightly shorter than the tube of the tubular corolla. In the series, its closest relatives are assumed to be L. fischeri and L. stenocephala. From L. fischeri, L. dalaolingensis is readily distinguished by smaller basal leaves, shorter synflorescence, narrower involucres and fewer phyllaries and florets; from L. stenocephala, L. dalaolingensis differs by smaller basal leaves, shorter synflorescence as well as broader bracts. A diagnostic key to Chinese species of L. ser. Speciosae with broadly ovate, ovate or ovate‐lanceolate bracts is provided.

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The identity of Senecio lancifer (Asteraceae, Senecioneae)

Cited by 2 publications

References 5 publications

Circumscription and phylogenetic position of Ligularia sect. Stenostegia (Asteraceae: Senecioneae) based on morphological, cytological, and molecular phylogenetic evidence

Circumscription and phylogenetic position of Ligularia sect. Stenostegia (Asteraceae: Senecioneae) based on morphological, cytological, and molecular phylogenetic evidence

Ligularia dalaolingensis sp. nov. (Asteraceae–Senecioneae) from central China

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