ðə flˈaʊɚz ɑːɹ ˈɔɹɪndʒ sˈʌmtaɪmz blˈʌd ˈɔɹɪndʒ ɔːɹ ɹˈɛɹli jˈɛloʊ wɪð ɐ θɹˈiːlˈoʊbd kɚɹˈoʊlə; wˈʌn ʌvðə kˈælɪks lˈoʊbz ɪz kˈʌlɚd sˈɪmɪlɚli tə ðə kɚɹˈoʊlə ænd fˈɔːɹmz ɐ hˈʊkt kˈɑːnɪkəl spˈɜːɹ æt ðə bˈæk ʌvðə flˈaʊɚ.
The flowers are orange (sometimes blood orange or rarely yellow) with a three-lobed corolla; one of the calyx lobes is colored similarly to the corolla and forms a hooked conical spur at the back of the flower.