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Xu WB, Liu Y, Kono Y, et al. Primulina cardaminifolia (Gesneriaceae), a rare new species from limestone areas in Guangxi, China. Bot Stud. 2013;54(1):19doi: 10.1186/1999-3110-54-19.
Xu, W. B., Liu, Y., Kono, Y., Chang, H., Peng, C. I., & Chung, K. F. (2013). Primulina cardaminifolia (Gesneriaceae), a rare new species from limestone areas in Guangxi, China. Botanical studies, 54(1), 19. https://doi.org/10.1186/1999-3110-54-19
Xu, Wei-Bin, et al. "Primulina cardaminifolia (Gesneriaceae), a rare new species from limestone areas in Guangxi, China." Botanical studies vol. 54,1 (2013): 19. doi: https://doi.org/10.1186/1999-3110-54-19
Xu WB, Liu Y, Kono Y, Chang H, Peng CI, Chung KF. Primulina cardaminifolia (Gesneriaceae), a rare new species from limestone areas in Guangxi, China. Bot Stud. 2013 Dec;54(1):19. doi: 10.1186/1999-3110-54-19. Epub 2013 Aug 27. PMID: 28510862; PMCID: PMC5432832.
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Bot Stud. 2013 Dec;54(1):19. doi: 10.1186/1999-3110-54-19. Epub 2013 Aug 27.

Primulina cardaminifolia (Gesneriaceae), a rare new species from limestone areas in Guangxi, China.

Botanical studies

Wei-Bin Xu, Yan Liu, Yoshiko Kono, Hsuan Chang, Ching-I Peng, Kuo-Fang Chung

Affiliations

  1. Guangxi Institute of Botany, Guangxi Zhuangzu Autonomous Region and the Chinese Academy of Sciences, Guilin, 541006, China.
  2. Herbarium (HAST), Biodiversity Research Center, Academia Sinica, Nangang, Taipei, 115, Taiwan.
  3. School of Forestry and Resource Conservation, National Taiwan University, Daan, Taipei, 106, Taiwan.
  4. Herbarium (HAST), Biodiversity Research Center, Academia Sinica, Nangang, Taipei, 115, Taiwan. [email protected].
  5. School of Forestry and Resource Conservation, National Taiwan University, Daan, Taipei, 106, Taiwan. [email protected].

PMID: 28510862 PMCID: PMC5432832 DOI: 10.1186/1999-3110-54-19

Abstract

BACKGROUND: Primulina cardaminifolia Yan Liu & W.B. Xu (Gesneriaceae), a distinct new species with imparipinnate leaves, is described and illustrated from a limestone valley in Guangxi Zhuangzu Autonomous Region, China. To assure its generic placement and phylogenetic affinity, phylogenetic analyses were performed using DNA sequences of nuclear ITS and chloroplast trnL-F intron spacer region. Additionally, somatic chromosome number was counted and pollen stainability was tested.

RESULTS: Phylogenetic analyses support its placement in Primulina; however, two phylogenetically distinct ITS sequence types were detected, suggesting a probable hybrid origin. Its pollen stainability is 100% and its chromosome number, 2n = 36, is congruent with all known counts of diploid species of the genus.

CONCLUSION: All available data support the recognition of the new species Primulina cardaminifolia and suggest that it could have derived from homoploid hybrid speciation. Color plates, line drawings and a distribution map are provided to aid in identification.

Keywords: Chromosome number; Flora of China; Homoploid hybrid; Molecular taxonomy; Primulina pinnata; Sino-Vietnamese limestone karst

References

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