Kalmar “genus” tana nufin rarrabuwar haraji da aka yi amfani da ita a cikin ilimin halitta don haɗa nau'ikan nau'ikan nau'ikan iri tare. Halin "Allamanda" rukuni ne na tsire-tsire masu furanni a cikin dangin Apocynaceae, 'yan asalin yankuna masu zafi na Amurka. Wadannan tsire-tsire ana shuka su ne saboda furanni masu kyan gani, masu siffar ƙaho, waɗanda za su iya zama launin rawaya, fari, ko ruwan hoda.