WordNet sense 1 (tropical Asiatic annual cultivated for its small tassel-shaped heads of scarlet flowers):

Emilia sagitta

WordNet sense 2 (tropical African annual having scarlet tassel-shaped flower heads; sometimes placed in genus Cacalia):

Cacalia javanica, Cacalia lutea, Emilia coccinea, Emilia flammea, Emilia javanica

WordNet sense 3 (young leaves widely used as leaf vegetables; seeds used as cereal):

love-lies-bleeding, Amaranthus caudatus, velvet flower