Plant Diversity ›› 2020, Vol. 42 ›› Issue (02): 74-82.DOI: 10.1016/j.pld.2019.11.003

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Crepis desertorum (Asteraceae, Cichorieae), a new species from northern Xinjiang (China) based on morphological and molecular data

Juan Qiua, Jianwen Zhangb, Tiangang Gaoc, Dunyan Tana,d   

  1. a Xinjiang Key Laboratory of Grassland Resources and Ecology and Ministry of Education Key Laboratory for Western Arid Region Grassland Resources and Ecology, College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urümqi 830052, China;
    b CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China;
    c State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China;
    d College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China
  • Received:2019-06-15 Revised:2019-11-12 Online:2020-04-25 Published:2020-04-30
  • Supported by:
    We thank Drs. Carol C. Baskin and Jerry M. Baskin (University of Kentucky, Lexington, Kentucky, USA) for correcting the English, and we are grateful to Dr. H. L. Chen for molecular lab work and analysis. This study was supported by the National Natural Science Foundation of China (No. U1603231, No. 31650067 and No. 31570213) and Program for Tianshan Innovative Research Team of Xinjiang Uygur Autonomous Region, China (2018D14010).

Abstract: Crepis desertorum from the Junggar Basin of northern Xinjiang, northwestern China, is described as a new species. Molecular studies indicate that the species is closely related to Crepis frigida. Morphological studies indicate that it is similar to Crepis sancta subsp. bifida but differs from the latter taxon in having glandular hairs on the stem, a flat receptacle and dimorphic achenes. Chromosome features and pollen and achene ultrastructure also are described for the new species.

Key words: Karyotype, Micro-morphology, Pericarp, Pollen, Taxonomy