What is "phalacraea"

Phalacraea is a genus of South American plants in the boneset tribe within the sunflower family.

1. Phalacraea callitricha (B.L.Rob.) R.M.King & H.Rob. - Colombia, Ecuador
2. Phalacraea ecuadorensis R.M.King & H.Rob. - Ecuador
3. Phalacraea latifolia DC. - Peru
4. Phalacraea longipetiolata (B.L.Rob.) R.M.King & H.Rob. - Colombia, Ecuador (= Steleocodon gracilis Gilli)

see Ageratum Alomia

• Phalacraea coelestina Regel - Ageratum microcarpum (Benth. ex Oersted) Hemsley
• Phalacraea lindenii Sch.Bip. ex Benth. & Hook.f. - Alomia ageratoides Kunth
• Phalacraea wendlandii Sch.Bip. ex Klatt - Ageratum rugosum Coulter ex J. D. Smith