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Bulletin of Botanical Research ›› 2018, Vol. 38 ›› Issue (3): 338-342.doi: 10.7525/j.issn.1673-5102.2018.03.004

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A Supplementary Study of Two Species of Galinsoga in the Liaoning Province

ZHAI Qiang1, WANG Wei-Bin2, QU Bo1,2,3, SHAO Mei-Ni1,2   

  1. 1. Bioscience and Technology College, Shenyang Agricultural University, Shenyang 110866;
    2. Horticulture College, Shenyang Agricultural University, Shenyang 110866;
    3. Liaoning Shuangtai Estuary Wetland Ecosystem Research Station, Panjin 124000
  • Received:2017-12-04 Online:2018-05-15 Published:2018-05-17
  • Supported by:
    This project was supported by the National Key R & D Program(2017YFC1200101);National Specimen Information Infrastructure(2005DKA21401)

Abstract: The diagnoses between Galinsoga parviflora Cav. and Galinsoga quadriradiata Ruiz. et Pav., two invasive plants in Liaoning Province, are still in confusion in morphological traits in some Chinese studies. On the basis of the two plants specimens of Shenyang Agricultural University herbarium and the comparison of these specimens with the new collected ones in Shenyang area, the key morphological distinction between the two Galinsoga species is the G. parviflora's ray florets have no pappus or the ray floret's pappus are speculations, and the tubular flower's pappus are plumose-cribriform with obtuse apex, while G. quadriradiata's pappus of both ray floret and tubular flower are plumose-cribriform with acute apex. These results showed definite morphological characters in identifying Galinsoga weeds.

Key words: Galinsoga, Galinsoga parviflora Cav., Galinsoga quadriradiata Ruiz. et Pav.

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