Khadira, Black Catechu (Acacia Catechu) Khadira (Black Catechu) is a deciduous tree which reaches the height up to 9 to 12 meters. This plant has short hooked spines and green leaves are bipinnately compounds with 50 pairs of leaflets which look like beautiful feathers. Color of the bark is greyish brown that exfoliate into long and narrow strips. Flowers of this plant are pale yellow in color with cylindrical spikes. Fruits are flat and glabrous with oblong pods. The sapwood