|Scientific name:||Alnus incana (L.) Moench|
|Nederlandse naam:||Witte els|
|English name:||Grey Alder, Speckled Alder|
|Family:||Betulaceae, Birch Family, Björkväxter|
|Life form:||Deciduous shrubs, fast-growing but short-lived tree; to 10 m tall, thicket-forming, with open crowns, smooth bark|
|Leaves:||Elliptic to ovate, 4-11 cm long, 3-8 cm wide, broadest near or below middle, doubly and irregularly toothed, with 9-12 nearly straight, parallel veins on each side, with a ladder-like network of depressed veins, pointed, dull dark green above, pointed|
|Flowers:||Unisexual catkins, borne separately, but on the same tree (the species monoecious). The seed catkins are cone-like, cylindric to ovoid, 1-2 cm long, erect, sessile or on a short, stout stalk, generally remaining intact after release of fruits in spring. The pollen catkins are elongate, 2-7 cm long, in hanging clusters from near the shoot tip.|
|Flowering Period:||March, April, May, on bare twig|
|Habitat:||Woodland, Canopy, Bog Garden|
Derivation of the botanical name:
Alnus, the classical Latin name.
incanus, very gray, hoary.
Alder from Middle Englishaller, from Old English alor, from Proto-Germanic aluz, akin to Old Norse ǫlr.
speckled in reference to the numerous lenticels covering the bark.
The catkins are mainly wind-pollinated, but also visited by bees to a small extent.