baretta / biretta [bɪˈrɛdə]
baretta – n. – a rutaceous evergreen shrub, Helietta parvifolia, of Texas with opposite trifoliate leaves and purple flowers
biretta – n. 1. a square head covering worn by ecclesiastics that has 3-4 projections above the crown, often with a tassel at the top and is red, purple or black to correspond to the rank of cardinal, bishop or priest