Plants of the Florida Keys · Plants by Conservation Areas · Plants by Habitat
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Floristic Inventory of the Florida Keys Database Online

Amaranthus spinosus L.
Spiny amaranth

Family: Amaranthaceae

Group: Dicot

Substrate: Terrestrial

Habit: Herb

Perennation: Annual

Native Range: A widespread weed in temperate and tropical regions; possibly native to Central America and South America.

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Not Native, Naturalized

SOUTH FLORIDA Cultivated Status: Not Cultivated

FISF Comments: For more images, click on the USDA PLANTS and Altas of Florida Vascular Plants links below.

FLORIDA KEYS Occurrence: Present

FLORIDA KEYS Native Status: Not Native, Naturalized

Florida Keys History and Distribution: Reported in 1884 by J. Cosmo Melvill for the island of Key West. Reported in 1913 by John Kunkel Small for pinelands and disturbed areas from the upper Keys to the lower Keys. Sparingly naturalized from the upper Keys to the lower Keys.

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Amaranthus spinosus
Copyright by: Forest & Kim Starr

Other data on Amaranthus spinosus available from :
Atlas of Florida Vascular Plants
Amaranthus spinosus has been reported from the following 3 conservation areas in the FLORIDA KEYS :
Occurrence Native Status
John Pennekamp Coral Reef State Park Present Not Native, Naturalized
Long Key State Park Present Not Native, Naturalized
National Key Deer Refuge Reported




Amaranthus spinosus has been reported for the following habitat in THE FLORIDA KEYS :
Disturbed Upland


All Images:

Amaranthus spinosus
Copyright by: Forest & Kim Starr