This species is characterized by its medium-sized narrowly elliptic leaves with long slender tips, short tubular stipules with developed aristas, terminal, pedunculate, laxly paniculiform inflorescences, pedicellate flowers, short lobed calyx limbs, medium-sized very slender white corollas with the tube longer than the lobes, and medium-sized oblate fruits. The leaves are prolonged at the tip, and have developed undulate submarginal veins.
Faramea cuspidata is similar to Faramea insignis, with usually larger broader leaves that have the venation prominulous and evident and somewhat stouter blue corollas with the lobes about as long as the tube. Plants that match Faramea cuspidata are infrequently and sporadically collected, and this species may need more comparison to Faramea insignis.