Betula verrucosa

(bech′ŭ-lă vĕ-roo-kō′să)

[L. betula verrucosa, rough birch]
The scientific name for the European white birch tree. The pollen from this birch, abbreviated Bet by the World Health Organization, contains allergens that cause allergies in the spring in the northern hemisphere.
SEE: Betulaceae