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Rhododendron japonicum is
a deciduous, tuft-forming shrub inhabiting hills or grasslands in
the lower parts of the subalpine zone, with branches spreading
obliquely sideways and growing to 0.5-2.5m in height. Barks are
grayish-brown. Leaves are of alternate phyllotaxis; some individual
leaves grow together on the branch tips. Their blades, 5-10cm in
length and 0.5-3cm in width, are oblanceolate, with bases tapering
off towards 3-7mm long petioles. The texture is thin, and the
margins are entire, wavy, and have bristles curving towards the
inside. Hairs are also sparse on either side of the leaf surfaces.
Flowers open as the leaves develop; branch tops bear 2-8 light
orange-red flowers together - the corollas, each 5-8cm long, are
funnel−shaped, cleft in 5, and upper segments have spots darker than
around. Sepals are cut into 5, and the margins have long hairs.
Bloom time. May-June. |
Wild plants in and around Shimane
島根とその周辺の野生植物
