The term 'purple flower' can refer to several different species, including FOXGLOVE (8 letters), HELIOTROPE (10 letters), LILAC (5 letters), VIOLET (6 letters), IRIS (4 letters), and ASTER (5 letters). FOXGLOVE is a biennial or perennial herb that produces tall spikes of tubular flowers in shades of purple, pink, and white. HELIOTROPE is a fragrant flowering plant with small purple flowers that are often used in perfumes. LILAC is a shrub with fragrant clusters of purple flowers that bloom in the spring. Violets are small, delicate flowers with five petals that come in shades of purple, blue, and white. IRIS is a genus of flowering plants with showy flowers in shades of purple, blue, yellow, and white. ASTER is a genus of flowering plants with daisy-like flowers in shades of purple, pink, and white.