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Pilosocereus millspaughii (Britton) Byles & Rowley
Key Largo tree cactus

Pilosocereus millspaughii
Copyright by: George D. Gann
in habitat, The Exumas, Bahamas, 2009

Family: Cactaceae

Group: Dicot

Substrate: Terrestrial

Habit: Tree

Perennation: Perennial

Native Range: South Florida and the West Indies (Cuba, Bahamas, Hispaniola).

Map of select IRC data for peninsular Florida

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

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Native

South Florida History and Distribution: Ranked as critically imperiled in Rare Plants of South Florida (Gann et al. 2002; pp 293-294) based on one occurrence at John Pennekamp Coral Reef State Park of the Monroe County Keys. This has been in decline in the wild for many years and the last known plants have been removed and placed into an ex-situ conservation collection. As a result, we have re-ranked this as possibly extirpated in the wild.

SOUTH FLORIDA Cultivated Status: Cultivated

Comments: This has been misidentified as P. bahamensis and treated as a broadly defined concept of P. polygonus. For a recent taxonomic revision of this and other Caribbean Pilosocereus, see Franck et al. (2019).

Synonyms: P. bahamensis, misapplied; Pilosocereus polygonus, misapplied.

Other data on Pilosocereus millspaughii available from :

Pilosocereus millspaughii has been found in the following conservation area :
Occurrence Native Status
John Pennekamp Coral Reef State Park Present Native

Pilosocereus millspaughii has been found in the following county :
Occurrence Native Status
Monroe County (Keys) Native


All Images:

Pilosocereus millspaughii
Copyright by: George D. Gann
in habitat, The Exumas, Bahamas, 2009
Pilosocereus millspaughii
Copyright by: George D. Gann
in habitat, The Exumas, Bahamas, 2009