Nectaroscordum Lindl. is a small genus of 3-4 species from Central Asia, and traditionally it is considered allied to the genus Allium in the former family Alliaceae (now included in Amaryllidaceae). Using traditional morphological characters, species in this genus are considered distinct. However, the recent analysis using DNA molecular phylogenetics clearly shows that this genus belong to Allium (Friesen et al. 2006). It was circumscribed as Allium, Subgenus Nectaroscordum. Morphologically, pedicels are enlarged into a disk-like structure at the base of each flower. The ovary is half-inferior, e.g., it is sunken into the base of the tepals, into the disk-like structure. The few species of Nectaroscordum, now included in Allium, are attractive and worthy of cultivation.
Nectaroscordum bulgaricum Janka (syn. Nectaroscordum siculum ssp. bulgaricum (Janka) Stearn) see Allium siculum ssp. dioscoridis (Sm.) K.Richt.
Nectaroscordum siculum (Ucria) Lindl. (syn. Nectaroscordum meliophilum (Juz.) Stank.) see Allium siculum Ucria
Nectaroscordum tripedale (Trautv.) Traub see Allium tripedale Trautv.