Kalmar "Genus Senna" tana nufin ƙungiyar taxonomic na tsire-tsire a cikin dangin Fabaceae (wanda aka fi sani da Leguminosae). Halin Senna ya ƙunshi nau'ikan nau'ikan tsire-tsire masu fure waɗanda aka fi sani da sennas ko cassias. Waɗannan tsire-tsire suna da alaƙa da ganyayen fiɗa, waɗanda aka jera su tare da tushe na tsakiya, da furanni masu launin rawaya ko orange, waɗanda galibi suna fure a lokacin rani. Yawancin nau'o'in jinsuna a cikin jinsin Senna ana amfani da su don magani, musamman a matsayin laxative na halitta.