2.4. 1. Dinemandra A. Juss. ex Endl., Ann. Sci. Nat., Bot., sér. 2, 13: 255. 1840.

= Dinemagonum A. Juss., Arch. Mus. Hist. Nat. 3: 585. 1843, syn. nov. Type species: Dinemagonum bridgesianum A. Juss. [= Dinemandra gayana (A. Juss.) R. F. Almeida & M. Pell.].

Type species.

Dinemandra ericoides A. Juss. ex Endl.

Notes.

Dinemandra and Dinemagonum were traditionally distinguished from each other based exclusively on their fruit morphology, with Dinemandra presenting dominant lateral wings and Dinemagonum presenting a dominant dorsal wing. Nonetheless, both genera are strongly supported as sister based on molecular data, being further morphologically supported by stalked sepal glands basally connate forming pairs (Simpson 1989) and 8 - colporate and reticulate pollen (Lowrie 1982). Recognising them as distinct provides no phylogenetic information and unnecessarily inflates this already genus-rich family. Thus, we propose a broadly circumscribed Dinemandra, including Dinemagonum . In the current circumscription, Dinemandra comprises two currently accepted species (no threatened species; Suppl. material 1) of shrubs endemic to the semi-desert vegetation of Chile, South America (POWO 2024). For an identification key for all species of Dinemandra, see Simpson (2011).