Kalmar “genus” tana nufin matsayi na haraji a cikin rabe-raben halittu. Ana amfani dashi don rarrabe gungun nau'ikan nau'ikan da ke da alaƙa da waɗannan halaye iri-iri kuma an yi imanin suna da magabata guda ɗaya. Halin halittu yawanci yanki ne na iyali kuma ya fi girma a matsayi fiye da nau'in jinsi.Swainsona shine takamaiman jinsin tsire-tsire na furanni a cikin dangin Fabaceae, wanda aka fi sani da dangin fis. Wannan jinsin ya ƙunshi nau'ikan tsire-tsire iri-iri, waɗanda galibinsu 'yan asalin ƙasar Ostiraliya ne. Tsire-tsire Swainsona an san su da furanni masu kama da fis kuma galibi ana noma su don ƙimar ado. Wani sanannen jinsuna a cikin wannan jinsin shine Swainsona formosa, wanda aka fi sani da Sturt's Desert Pea, wanda shine alamar furen Kudancin Ostiraliya.A taƙaice, "genus Swainsona" yana nufin nau'in haraji wanda ya ƙunshi rukuni mai dangantaka. nau'in tsire-tsire na dangin Fabaceae, suna da furanni masu kama da fiɗa kuma galibi ana samun su a Ostiraliya.