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Ceratophyllum australe Griseb.
Prickly hornwort

Family: Ceratophyllaceae

Group: Dicot

Substrate: Freshwater Aquatic

Habit: Herb

Perennation: Perennial

Native Range: Southeastern United States, the Greater Antilles (Cuba), Mexico, Central America and South America.

Map of select IRC data for peninsular Florida

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

SOUTH FLORIDA Occurrence: Presumed Extirpated

SOUTH FLORIDA Native Status: Native

South Florida History and Distribution: Ranked as possibly extirpated in Rare Plants of South Florida (Gann et al. 2002, pp 129-130), based a few collections from the lower Florida Keys. It was first collected sometime between 1838 and 1953, and then again three times between 1940 and 1953 on Big Pine Key, and observed there through 1978. It has been re-ranked as presumed extirpated after searches have failed to yeild any plants.

SOUTH FLORIDA Cultivated Status: Not Cultivated

Comments: For an image of an herbarium specimen collected on Big Pine Key in the Monroe County Keys by George N. Avery and Martha B. Meagher in 1974, visit the Atlas of Florida Vascular Plants.

Synonyms: C. echinatum, misapplied.

Other data on Ceratophyllum australe available from :

Atlas of Florida Vascular Plants
Ceratophyllum australe has been found in the following 2 conservation areas :
Occurrence Native Status
Fern Forest Nature Center Recorded as Present in Error
National Key Deer Refuge Presumed Extirpated Presumed Extirpated

Ceratophyllum australe has been found in the following county :
Occurrence Native Status
Monroe County (Keys) Presumed Extirpated Presumed Extirpated

Ceratophyllum australe has been found in the following 2 habitats :
Disturbed Wetland
Sinkhole