Kadua st.-johnii is a succulent herb in the Rubiaceae (coffee) family with slightly woody, trailing, quadrangular stems up to 30 cm (1 ft) long. The fleshy leaves are clustered toward the base of the stem and are broadly ovate to broadly elliptic, 5.5 to 15 cm (2 to 6 in) long and about 3.5 to 7.5...