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

Juan Qiu; Jianwen Zhang; Tiangang Gao; Dunyan Tan

doi:10.1016/j.pld.2019.11.003

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

Plant Divers. 2019 Dec 12;42(2):74-82. doi: 10.1016/j.pld.2019.11.003. eCollection 2020 Apr.

Authors

Juan Qiu¹, Jianwen Zhang², Tiangang Gao³, Dunyan Tan^{1

4}

Affiliations

¹ 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.
² CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
³ State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.
⁴ College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China.

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.

Keywords: Karyotype; Micro-morphology; Pericarp; Pollen; Taxonomy.