Complex sentence: Flowers are bell-shaped, 2--3 cm long, with 1--2 cm in diameter, with 2-lipped petals in blue, purple to red, or orange to white, spotted within.
Split into simpler sentences: Flowers are bell-shaped, 2--3 cm long, with 1--2 cm in diameter. Flowers, 2-lipped petals in blue, purple to red, or orange to white, spotted within.