|Grid reference||ST 17618 77066|
|Common name||White alder|
|Common name||Californian alder|
|Origin||West North America|
|Status||GB Champion 2013|
|Height||14M January 2016|
This tree is on the south side of the Alder group.
General tree description
Alnus rhombifolia is a medium to large tree with a spreading form, growing to 15 to 25 metres. Its bark is pale grey, smooth on young trees, becoming scaly when mature. The leaves are diamond-shaped (rhombic), 4 to 10cm long, with finely serrated edges. There are male and female flowers, in the form of catkins. The pendulous, yellow male catkins appear in early spring, before the leaves. Female catkins mature in autumn and are ovoid, superficially resembling a small conifer cone. Winged seeds disperse during winter, and the old blackish cones remain on the tree for up to a year.