Kalmar "Genus" tana nufin nau'in harajin haraji wanda ke sama da nau'in jinsi da ƙasa da iyali, kuma "Cerastium" wani nau'in tsire-tsire ne na furanni a cikin gidan Caryophyllaceae.Ƙari musamman, Cerastium babban girma ne. jinsin tsire-tsire na shekara-shekara ko na shekara-shekara wanda aka fi sani da chickweeds ko chickweeds-kunne na linzamin kwamfuta. Waɗannan tsire-tsire sun fito ne daga yankuna masu zafi na Turai, Asiya, da Arewacin Amurka kuma suna da ƙananan furanni, farare ko ruwan hoda da ganye waɗanda galibi ana rufe su da gashin gashi masu kyau. jinsuna, kuma da yawa daga cikinsu ana la'akari da ciyawa, yayin da wasu kuma ana shuka su azaman tsire-tsire na ado ko kuma ana amfani da su azaman magani.