LigulariaCass with a wide range of medical value is distributed widely and a series of studies is carried out by scholars both at home and abroad.
橐吾属植物分布广泛，具有广泛的药用价值，国内外学者对橐吾属植物做了大量的研究工作。
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We use L. virgaurea, one of the species in LigulariaCass, and research the intra-inflorescence variation in flowers and seeds by sampling and investigate in field.