Alders are trees of the genus Alnus in the birch family Betulaceae. The genus includes about 35 species of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north temperate zone with a few species extending into Central America, as well as the northern and southern Andes.
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(c) Douglas Goldman · New York, United States · CC BY-SA
Alnus glutinosa
2 articles
Kyle Nessen · Oregon, United States · CC0
Alnus rhombifolia
1 articleEvery article on Plant News that mentions a member of this genus, newest first.
A white alder tree in Glendale, California was confirmed by the iNaturalist community as a verified, research-grade identification, adding a solid data point for this native tree's range in Southern California.
The alder trees lining creek banks and reclaimed mine sites near you may owe their toughness to a root partner that doesn't...
Alder trees lining the creek in your local park are quietly building soil fertility from scratch, no fertilizer required,...
Alders are one of the few trees that can colonize a gravel pit or eroded streambank and actually rebuild the soil —...
The black alder trees lining your nearest contaminated creek or roadside detention pond may already be doing quiet cleanup...
Alders are one of the few trees that can colonize a gravel pit or eroded streambank and actually ...
Alder trees lining the creek in your local park are quietly building soil fertility from scratch,...
