Black alder (Alnus incana)
The defined stage of leaf appearance
The buds have flushed and the green of the new leaves are clearly visible.
After the defined stages of leaf appearance
The new leaves are unfolded and the leaf blade is fully visible.
Photos: Eija Matikainen
Flowering in black alder
The flowers of male (staminate) inflorescence (hanging catkins) are open and begin to release yellow pollen.
(On windy days the release of pollen is visible).
Photos: Eija Matikainen / Egbert Beuker