Help us maintain this website and keep it free and open for our community of scientists, students, and conservation managers, who depend on it to obtain the most up to date information. Help us save species and restore native ecosystems!

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

Citrus x aurantium L.
Sour orange

Citrus x aurantium
Copyright by: Shirley Denton

Family: Rutaceae

Group: Dicot

Substrate: Terrestrial

Habit: Tree

Perennation: Perennial

Native Range: Native to the Old World (Tropical Asia); widely cultivated and naturalized elsewhere.

Map of select IRC data for peninsular Florida

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Not Native, Naturalized

South Florida History and Distribution: IRC considers this an emerging invasive in South Florida.

SOUTH FLORIDA Cultivated Status: Cultivated

Synonyms: C. vulgaris.

FLORIDA KEYS Occurrence: Assumed to be Present

FLORIDA KEYS Native Status: Not Native, Cultivated Only

Map of select IRC data for the Florida Keys

Florida Keys History and Distribution: Reported in 1913 by John Kunkel Small for hammocks, but most likely persisting from cultivation.  This was a common citrus root stock used in the early 20th century.

Other data on Citrus x aurantium available from :

Citrus x aurantium has been reported from the following conservation area in the FLORIDA KEYS :
Occurrence Native Status
Biscayne National Park, Florida Keys Section Presumed Extirpated Not Native, Cultivated Only

All Images:

Citrus x aurantium
Copyright by: Shirley Denton