Abstract:The artificially cultivated P. qinlingensis was used as an experimental material. The variation law of floral organs was discussed and the causes of variation were analyzed, through the observation and statistics of the organ morphology and number. The results showed that: (1) a total of 17 species of corolla variation, 7 types of fertile stamens and 5 types of sepal variants were found in the 1996 P. qinlingensis flowers observed. The total mutation rates were 34.57%, 38.38% and 32.67%, respectively. (2) P. qinlingensis peduncle may be branched, and the number of sepals was 2~3 on the peduncle. (3) Correlation analysis showed that the number of lower lips was positively correlated with the number of fertile stamens, and the number of upper lips was negatively correlated with the number of fertile stamens. The correlation coefficients were 0.927 4 and -0.481 1, respectively. This may be related to the growth of P. qinlingensis fertile stamens in the inner base of the lower lip of the corolla, combined with floral diagram analysis. The abundant variation types of P. qinlingensis in this study may lay a foundation for the study of system evolution, floral organ development, reproductive ecology and molecular genetics in the future, and provide ideas for cultivating varieties with different ornamental values.