Pollen from a variety of common plants: sunflower, morning glory, hollyhock, lily, primrose and caster bean.

• 花粉从各种常见植物：向日葵，牵牛花，蜀葵，百合，樱草和连铸机的bean 。The largest one at center is nearly 100 microns wide.；最大的一次在中心几乎是100微米宽。