Plant Diversity ›› 2016, Vol. 38 ›› Issue (06): 322-329.DOI: 10.1016/j.pld.2016.10.005

• Articles • Previous Articles    

Resurrection of the genus Botrydium Spach (Chenopodiaceae), with a description of four new species from China, Peru and Burundi

Mingli Zhanga,b, Gelin Zhuc   

  1. a. Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
    b. Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China;
    c. Institute of Botany, Northwest Normal University, CN-730070, Lanzhou, Gansu, China
  • Received:2016-05-14 Revised:2016-10-24 Published:2021-11-05
  • Contact: Mingli Zhang
  • Supported by:
    We thank curators of the following herbaria for checking their collections: ASC, BRY, CAS, COLO, CS, DAV, GH, IDO, MO, NY, RM, TEX, UC, US, PE, NWTC, HNWP, LZU, WUK, CDBI, SZ; Dr. Howard C. Stutz at Brigham Young University, and Dr. Stewart C. Sanderson at USDA Forest Service for their exceptional assistance, Dr. Paul G. Wilson at Western Australian Herbarium for his valuable taxonomical suggestion to manuscript, and Dr. David M. Williams at Natural History Museum London for critical comments and improving the English manuscript. We also thank Mr. Bo-yi Peng for assistance with SEM and Mr. Jian-lu Bai for drawings of Plates 2e3. This study is financially supported by Biodiversity Conservation Program (ZSSD-012) of Chinese Academy of Sciences, and China National Key Basic Research Program (2014CB954201).

Abstract: Based on specimens from twenty-one herbaria from China and USA, as well as observations using SEM, the genus Botrydium is resurrected as Neobotrydium. It has a number of distinctive characters: the plants are covered with granular hairs and granulated globular gland-grains, strong smell, and dichasia. Neobotrydium is removed from Chenopodium. The differences between Neobotrydium and Chenopodium, as well as circumscriptions of five glandular genera, Neobotrydium, Cycloloma, Roubieva, Ambrina, and Dysphania are discussed. Neobotrydium comprises twenty species which occur in Asia, Europe, North Africa, North America to Northwest of South America and Australia. Four new species are described: Neobotrydium corniculatum and Neobotrydium ornithopodum from China, Neobotrydium peruensis from South America, and Neobotrydium burundiensis from Africa. A diagnostic key is presented.

Key words: Chenopodiaceae, Botrydium, Neobotrydium, New species, China, Peru, Burundi