Lithocarpus densiflorus (Tanbark Oak)
Native: California, Oregon
Height to 21m, sometimes twice as much.
Leaves have 12-14 pairs of parallel veins and are covered with thick pale orange wool when young, becoming smooth and glossy with age. Young shoots are also covered with this down.
Bark is used in tanning leather.
Flowering is irregular, occurring in April or May and again in September. Male flowers are in catkins 7.5-10cm long. a few females are usually produced below the male catkins and develop into acorns in two years.
Acorns are about 1.5-2.5cm.