Figure 3
Relationship among specimens and phytoliths using PCA analysis. Red spheres: indicates the types of phytolith; Green spheres: represents specimens collected in southern China; Yellow spheres: represents specimens collected in northern China. The size of the Green and Yellow spheres relates to the total count of phytoliths of the specimen, the larger the sphere the more phytoliths identified in each specimen. The red and black dots are the projection of spheres on different quadrant. Refer to the result part for more details.
