Plants pictured on this page are hybrids of the Hymenocallis complex which includes Hymenocallis, Ismene, Elisena, and Leptochiton. In 2026 you can find hybrids between Ismene and Hymenocallis listed under both names.
Hymenocallis 'Advance' see Ismene 'Advance'.
Hymenocallis × festalis see Ismene × deflexa
Hymenocallis × macrostephana Baker, syn. Ismene x macrostephana Baker, is an artificial hybrid made by Van Tubergen in the late 19th century and named Daphne. It is a cross between Ismene narcissiflora M.Roem. and Hymenocallis speciosa. Plants of the World Online in 2026 is listing it under Hymenocallis//. It has very large flowers, as the name implies (big crowned), which are sweetly scented and last a bit longer than other species. It flowers in late summer, when the new wide leaves appear. Plants are frost sensitive, needing minimum temperatures of +5 °C (41 °F). Photos by Angelo Porcelli.
Hymenocallis × spofforthiae Herb. 'Sulphur Queen' see Ismene × spofforthiae
Hymenocallis 'Sister of Tropical Giant', also sold as 'Tropical Giant Sister', has flowers like 'Tropical Giant', but all six segments recurve equally. The foliage is broad and grayish green instead of the dark green, glossy foliage of 'Tropical Giant'. According to Plants Delights' website: "The nocturnal, sweetly-fragrant flowers are composed of a central white cup, surrounded by long white sepals. Each spike holds up to a dozen flowers on long 6" pedicels. For us, it is the earliest flowering of the giant Mexican spider lilies, starting in late June (NC)...nearly a month before Hymenocallis 'Tropical Giant', which appears to be a different species. Hymenocallis 'Tropical Giant Sister' prefers a moist soil, but is very tolerant of extended dry periods. Thanks to the late bulb guru, Thad Howard, for sharing this just prior to his death." Photos taken by Jay Yourch.
Hymenocallis 'Tropical Giant', see Hymenocallis 'Tropical Giant'.
Other related links are:
Hymenocallis - Ismene - Ismene hybrids