Scientific Classification
Scientifically, the genus Tulipa was traditionally divided into two sections, the Eriostemones, and the Leiostemones (syn. Tulipa), and comprises 87 species.
In 1997 the two sections were raised to subgenera and the subgenus Leiostemones divided into five sections, Clusianae, Eichleres, Kopalkowskiana, Tulipanum and Tulipa. The Eichleres were in turn subdivided into eight series. Subgenus Eriostemones is divided into three sections, Biflores, Sylvestres, and Saxatiles. Other classifications do however exist. In 2009 two other subgenera were proposed, Clusianae and Orithyia (four in all), the latter two only having one section, making twelve sections in all. Some species formerly classified as Tulipa are now considered to be in a separate genus, Amana, including Amana edulis (Tulipa edulis).
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