2.7. 2. Callaeum Small in Britton & al., N. Amer. Fl. 25: 128. 1910.

= Cabi Ducke, Arq. Serv. Florest. 2 (1): 13. 1943. Type species: Cabi paraensis Ducke [= Callaeum antifebrile (Griseb.) D. M. Johnson].

Type species.

Callaeum nicaraguense (Griseb.) Small.

Notes.

Callaeum comprises 11 currently accepted species (five threatened species; Suppl. material 1) of scandent shrubs or lianas endemic to rainforests, savannas, and seasonally dry tropical forests from the United States (North America) to Argentina (South America; POWO 2024). For an identification key for all species of Callaeum, see Johnson (1986).