The stems of vajraccra are cylindrical, with many branches in the upper part. There are 5 ridges which are not obvious. The ridges are spirally arranged, the color is green, and the pith is nearly pentagonal.
The leaves are alternate and fleshy, usually five rows growing on the top ridge of the twigs, which are obovate or obovate oblong and spoon shaped, about 4.5-12 cm long and 1.3-30.8 cm wide, with a small convex tip at the top, blunt and round, gradually narrowed at the base, entire, short petiole, inconspicuous veins and spiny stipules.
The inflorescence of Vajra is bifidate and axillary, with a stalk at the base, 2 bracts, broad bell shaped involucral bracts, semicircular lobes, marginal hairs on the edge, like an inflection. Male flowers are many, bracts are filiform, female flowers are one
