Gardeners' Chronicle, p16, (January 5, 1895)

Injudicious Hybridisation.—M. Rodigas, the Director of the School of Horticulture at Ghent, suggests that the decay observable in the persistent leaves of many plants of Cliveia may be attributable to the employment of pollen from Amaryllis and Hippeastrum, the leaves of which are deciduous. This is a very ingenious and feasible suggestion, the accuracy of which could easily be tested.