| Alnus sieboldiana, a
small deciduous tree growing to 5-10m in height, 6-10cm in diameter,
with gray-brown branches, inhabit 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, with now
petioles, 4-5cm long, somewhat stout, curve in a bow way 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
