The Gardeners' Magazine 53: 255 (Mar 26, 1910)

Mr. J. Hudson showed two seedlings from an amaryllis which had been pollinated with pollen from Vallota purpurea, having flowered in the autumn. They did not show in any essential point the characters of vallota, and it was suggested that the flowers should be self-pollinated and seedlings raised from them, to see whether the next generation showed any segregation in the direction of vallota.