Phanera japonica is a species of flowering plant in the family Fabaceae which can be found in Guangdong, Hainan and Japan.[1]
The species petioles are 3- long while the margins are papery, yellow in colour, and are 4- long. It legume is oblong, swollen and is 2- long. The leaf blade surface is shiny and hairless. The raceme is inflorescenced and is 10- with many flowers. It bracteole is linear, long, and have 10- long pedicels which are slender as well. It receptacle is broadly funneled and is 1.5- long. Petals are green in colour, are either obovate or oblong, and are long while its claw is . The species have three fertile stamens which are long and glabrous while the staminodes are two in number with silky hairs. The seeds are black coloured and are shiny, ensiform, and long. The flowers bloom from January to May while the fruits ripe from June to September.[1]