Scientific details

SCIENTIFIC NAME: Alnus serrulata

 COMMON NAME(S): Brookside alder, Hazel alder
SYNONYM(S):
FAMILY: BETULACEAE - Birch family
ORIGIN: Mostly temperate Northern Hemisphere, 35-40 spp.
HABITAT: Woods, cultivated landscapes
RANGE: Eastern United States, Texas to New England
TYPE: Deciduous large shrub
HEIGHT: 15-20'
CHARACTERISTICS: Bark usually thin and smooth with numerous pores
LEAVES: Alternate, simple, usually broadest near the base with a single or double row of teeth along the margins
FLOWERS: Separate male and female flowers borne on hanging clusters (catkins)
FLOWERING SEASON: Spring
FRUITS: Small, cone-like clusters

ALLERGENIC COMPONENTS: Pollen
ALLERGENIC PRINCIPLES: Pollen allergens
ALLERGENIC PROPERTIES: Respiratory
COMMENTS: The alders produce abundant windborne pollen with significant allergenic activity. Hazel alder (A. serrulata) is the most common species in the southeastern United States.

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