- 1. It is tree pollen, the most active is the Oak tree.
- 2. You need dry, windy weather to make a perfect storm of pollen
- 3. Malvaceae Pollen can have small pores, the spines are about twice as long as the wall is thick. It is spherical, porate and echinate, with a remarkably thick inner wall. Also, The pores are rough, rectangular openings in the outer wall.
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