Rubus yoshinoi is
a deciduous shrub found in fields and mountains in hilly districts,
with branches creeping around - like blades of grass. The stems have
sparse prickles on them. Leaves are of alternate phyllotaxis and
odd-pinnate compounds; leaflets consist of a general pair, each
diamond-shaped oblong, the tips abruptly pointed, margins serrated.
Flowers, red-purple, bloom two each on the branch's ends, facing
upwards; petals, approximately 5mm long, are erect. Fruit is
multiple together; spherical, 1cm in diameter; it ripens red in
July-August. Bloom time: May-June.