What is "cananga"

Cananga is a small genus of trees in the family Annonaceae. One of its species, Cananga odorata, is important as the source of the perfume ylang-ylang. Two species are recognized:

• Cananga brandisiana (Pierre) Saff., syn. Cananga latifolia (Hook.f. & Thomson) Finet & Gagnep.
• Cananga odorata (Lam.) Hook.f. & Thomson

Cananga latifolia is listed as a separate species in some sources, but the basionym, Unona latifolia Hook.f. & Thomson, is a later homonym of Unona latifolia Dunal and so is not an acceptable name. Unona brandisiana was explicitly proposed as a replacement name.