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Baccharis dioica Vahl
Hammock groundsel, Broombush Falsewillow

Baccharis dioica
Copyright by: George D. Gann
In habitat, New Providence, Bahamas, 2012

Family: Asteraceae

Group: Dicot

Substrate: Terrestrial

Habit: Shrub

Perennation: Perennial

Native Range: South Florida, the West Indies and southern Mexico (Yucatan peninsula).

Map of select IRC data for peninsular Florida

State of Florida Status: Endangered

IRC SOUTH FLORIDA Status: Presumed Extirpated or Extinct in the Wild

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Native

South Florida History and Distribution: Ranked as presumed extirpated in Rare Plants of South Florida (Gann et al. 2002; p 60) based on several collections between 1904 and 1915 from Brickell Hammock just south of the Miami River. Other Baccharis taxa have often been misidentified as this (Gann et al. 2002, Franck et al. 2020). A recent observation on iNaturalist has been suggested to be this, and it does resemble this species, but not all leaves are entire (Gann 2022 on iNaturalist). To date, flowering has not been observed; it is possibly a hybrid between other native Baccharis taxa. This species is now commonly cultivated in South Florida from West Indian germplasm, but no naturalized populations are currently known.

SOUTH FLORIDA Cultivated Status: Cultivated

Other data on Baccharis dioica available from :

Baccharis dioica has been found in the following 2 conservation areas :
Occurrence Native Status
Deering Estate at Cutler Recorded as Present in Error
Mound Key Archaeological State Park Recorded as Present in Error

Baccharis dioica has been found in the following county :
Occurrence Native Status
Miami-Dade County Presumed Extirpated Presumed Extirpated

Baccharis dioica has been found in the following habitat :
Rockland Hammock

All Images:

Baccharis dioica
Copyright by: George D. Gann
In habitat, New Providence, Bahamas, 2012
Baccharis dioica
Copyright by: George D. Gann
In habitat on Great Abaco, Bahamas