Chamaecrista absus

Chamaecrista absus
	Close-up of flowers
	Leaves and flowers
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fabales
Family:	Fabaceae
Subfamily:	Caesalpinioideae
Genus:	Chamaecrista
Species:	C. absus
Binomial name
	Chamaecrista absus; (L.) H.S.Irwin & Barneby
Synonyms
	List Cassia absus L.; Cassia absus var. meonandra H.S.Irwin & Barneby; Cassia acacalis Royle; Cassia babylonica Schrank; Cassia coccinea Wall.; Cassia exigua (Roxb.) Steud.; Cassia thonningii DC.; Cassia viscida Zoll. & Moritzi; Cassia viscosa Schumach. & Thonn.; Grimaldia absus (L.) Link; Grimaldia opifera Schrank; Senna absus (L.) Roxb.; Senna exigua Roxb.; ;

Chamaecrista absus (syn. Cassia absus), the pig's senna or tropical sensitive pea, is a species of flowering plant in the family Fabaceae, with a worldwide distribution in the tropics and subtropics. An annual herb reaching 60 cm (24 in), it is a common weed of cultivated and waste places, and its seeds are regularly harvested and sold for use in traditional medicine in Africa and Asia.