1.1. Acmanthereae W. R. Anderson, Leandra 7: 7. 1977 .

Type genus.

Acmanthera (A. Juss.) Griseb.

Diagnosis.

Stipules absent, leaf veins camptodromous, sepals enclosing petals in buds, carpels free, styles ventrally to subapically inserted on ovaries, presence of diazanapaphthalenes, propargyl-type 1, 3 - dipolar organic compounds, absence of benzopyrans, lactams, lignam glycosides, pyrimidine nucleosides, pyrimidine nucleotides, saccharolipids, sulfenyl compounds.

Notes.

Acmanthereae currently comprises only three accepted genera ( Acmanthera, Coleostachys, and Pterandra) and 23 species (15 threatened species; Suppl. material 1) of trees, shrubs, or subshrubs endemic to the Americas (POWO 2024).