Kalmar Castanospermum tana nufin wani nau'in tsire-tsire na furanni a cikin dangin Fabaceae, ɗan asalin ƙasar Ostiraliya kuma akafi sani da "Moreton Bay chestnut" ko "black wake". Sunan "Castanospermum" ya samo asali ne daga kalmomin Helenanci "kastanon", wanda ke nufin chestnut, da "sperma", wanda ke nufin iri, yana nufin tsaba masu kama da chestnut da shuka ya samar.
