Plants pictured on this page are hybrids of the Hymenocallis complex which includes Hymenocallis, Ismene, Elisena, and Leptochiton.
The two hybrids listed below are commonly grown and are sold both as Hymenocallis and as Ismene. If you support the Ismene split by Meerow in 1990 they would be Ismene hybrids since they are crosses of species now included in Ismene.
Hymenocallis × festalis (syn. Ismene × festalis) or sometimes referred to as Ismene 'Festalis' is a garden hybrid between Hymenocallis longipetala (syn. Elisena longipetala , syn. Ismene longipetala) and Hymenocallis narcissiflora (syn. Ismene narcissiflora). Photos by Sheila Burrow and Carol Jensen.
Hymenocallis × spofforthiae 'Sulphur Queen' is a hybrid between H. narcissiflora (syn. Ismene narcissiflora) , the Peruvian Daffodil, and Hymenocallis amancaes, (syn. Ismene amancaes) a yellow- flowered Peruvian species. The yellow color of Sulphur Queen is fleeting, whether due to heat or bright light I'm not sure. This elegant, easily-grown plant is sweetly fragrant. Photo by Jim McKenney of a plant growing in his garden. This plant is often sold as Ismene 'Sulphur Queen'.
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