Kalmar "Chlorophyceae" tana nufin wani nau'in koren algae, wadanda kwayoyin halitta ne na photosythetic da ke dauke da chlorophyll da sauran pigments, kuma suna amfani da hasken rana don samar da makamashi. Waɗannan algae galibi ana samun su a cikin ruwa mai daɗi ko muhallin ruwa kuma suna iya zama unicellular ko salon salula a cikin tsari. Sunan "Chlorophyceae" ya fito ne daga kalmomin Helenanci "chloros" ma'ana kore, da "phykos" ma'ana ciyawa.