The inner tangental wall and radial wall are thickened, while outer tangental wall remain in thin wall state.

At anthesis, the mature anther wall included epidermis and some layers of parenchymal cells and several layers of endothecium cells with an evidently thickened radial wall.

The results about plant print identification on apparent structural of Linnaea borealis L. showed that: mounted type of radial wall was "I type", the type of sub-ward cells was"row double cells type".