Alnus alnobetula ssp. crispa
Alnus alnobetula ssp. fruticosa
Alnus alnobetula ssp. sinuata

General:
Deciduous shrub or tree, 1-5 m tall; pointed axillary buds without stalks; bark scaly, sometimes lichen-covered, yellowish-brown or grey.

Leaves:
Alternate, deciduous, smooth, finely toothed 1-2 times, oval with pointed tips, 4-10 cm long, brownish in the fall.

Flowers:
Inflorescence of male and female catkins which open at the same time as the leaves on current year's growth; male catkins unstalked.

Fruits:
Small nutlets, with broad wings; female cones 1.5-2 cm long, egg-shaped.

Notes:
Three subspecies occur in BC.

Source:  The Illustrated Flora of British Columbia

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Illustration Source:  The Illustrated Flora of British Columbia

Synonyms and Alternate Names:
Alnus viridis (Chaix) Spach