Amaryllidaceae, having common name(s) associated with the genus; Spider Flower, Basket Flower, Summer Daffodil.
(H. xfestalis 'Zwanenburg') Raised from a cross of H. narcissiflora (Jacq.) J.F. Macbr. with H. longipetala (Lindl.) J.F. Macbr. Flowers pure white, petals elegantly flared. Large umbels, good for cutting. Fragrant. Ht. 14-18 inches. Hardy in zones (6), 7, 8, 9, 10.