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Alnus sieboldiana, a
small deciduous tree growing to 5-10m in height and 6-10cm in
diameter, with gray-brown branches, inhabits hilly regions near
seashores, growing well even in poor soils and invading into, for
example, landslide scars. Leaves are of alternate phyllotaxis;
blades are long ovate, 6-12cm long, 3-6cm wide, tips sharply
pointed, bases circular, and left-right asymmetric, with sharp
double serrations on margins. Flowers are monoecious and bloom
almost simultaneously with the development of the leaves; male
inflorescences, now petioles, 4-5cm long, somewhat stout, curve in a
bow shape, and droop down from axils on previous year's branches.
Females, with 1-2cm long petioles, set themselves below the males.
Bloom time: March-April. |
Wild plants in and around Shimane
島根とその周辺の野生植物
