The fistula (variously called calamo, cannula, arundo, calamus, pipa, pugillaris, sipho or sumptorium)[1] is a metal drinking straw used in the Roman Rite to receive the Blood of Christ in Holy Communion.
- ^ Eucharistic Utensils by Lucas Viar, published on the Liturgical Arts Journal: https://www.liturgicalartsjournal.com/2020/04/eucharistic-utensils.html