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Floristic Inventory of the Florida Keys Database Online

Kallstroemia maxima (L.) Hook & Arn.
Big caltrop

Kallstroemia maxima
Copyright by: Roger L. Hammer

Family: Zygophyllaceae

Group: Dicot

Substrate: Terrestrial

Habit: Herb

Perennation: Annual

Native Range: Southeastern United States, the West Indies, Mexico, Central America and northern South America.

IRC SOUTH FLORIDA Status: Imperiled

Map of select IRC data for peninsular Florida

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Native

SOUTH FLORIDA Cultivated Status: Not Cultivated

FLORIDA KEYS Occurrence: Present

FLORIDA KEYS Native Status: Native

IRC FLORIDA KEYS Status: Critically Imperiled

Map of select IRC data for the Florida Keys

Florida Keys History and Distribution: Reported in 1884 by J. Cosmo Melvill as having been previously present on the island of Key West.  Reported in 1913 by John Kunkel Small for the Florida Keys (sensu lato) without specific locality or habitat data.  We consider this native to the upper Keys and lower Keys, but possibly extirpated in the lower Keys.

Other data on Kallstroemia maxima available from :


Kallstroemia maxima has been reported from the following conservation area in the FLORIDA KEYS :
Occurrence Native Status
John Pennekamp Coral Reef State Park Present Native




Kallstroemia maxima has been reported for the following habitat in THE FLORIDA KEYS :
Disturbed Upland


All Images:

Kallstroemia maxima
Copyright by: Roger L. Hammer

Kallstroemia maxima
Copyright by: Keith A. Bradley

Kallstroemia maxima
Copyright by: Keith A. Bradley