|Frangula crenata, a
deciduous shrub with gray-brown barks that grows up to 4m in height,
occurs in field and mountain wetlands. Leaves are alternate; blades
are 6-12cm long, 2.5-5cm wide, long oblong, with tips shortly
pointed, bases being circular or obtuse, margins with shallow
serrations, 6-10 pairs of veins dent toward lower surfaces, and
5-10mm petioles. Axils on the upper part's branches bear cymes and
set about 5mm-in-diameter small yellow-green flowers; sepals and
petals are 5, respectively; the sepals are erect, and the petals are
smaller than the former. Pistil's styles cleft shallowly in three.
Bloom time: June-July.