Please scroll to the bottom for more images.
Floristic Inventory of the Florida Keys Database Online

Digitaria horizontalis Willd.
Jamaican crabgrass

Digitaria horizontalis
Copyright by: Grasses, Sedges and Rushes of Palm Beach
and Martin Counties, Florida website.

Family: Poaceae

Group: Monocot

Substrate: Terrestrial

Habit: Herb

Perennation: Annual

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

Comments: For an image, visit Grasses of Palm Beach and Martin Counties.

Synonyms: Syntherisma digitatum.

FLORIDA KEYS Occurrence: Reported

Map of select IRC data for the Florida Keys

Florida Keys History and Distribution: Reported in 1913 by John Kunkel Small for hammocks from the upper Keys to the lower Keys.  Also reported for Dry Tortugas National Park (Reimus & Robertson, 1997).  An herbarium voucher is needed for the Monroe County Keys.

Other data on Digitaria horizontalis available from :


Digitaria horizontalis has been reported from the following conservation area in the FLORIDA KEYS :
Occurrence Native Status
Dry Tortugas National Park Reported




Digitaria horizontalis has been reported for the following habitat in THE FLORIDA KEYS :
Disturbed Upland


All Images:

Digitaria horizontalis
Copyright by: Grasses, Sedges and Rushes of Palm Beach
and Martin Counties, Florida website.

Digitaria horizontalis
Copyright by: plantillustrations.org (public domain)
originally published in Wood, J.M., Evans, M.S., Natal plants, vol. 2: t. 140 (1899-1904)