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Opuntia keyensis Britton ex Small. Phen: Apr-Jun; Aug-Dec (-Feb). Hab: Coastal strand, occasionally in water-logged saline soils of mangroves or on margins of mangrove swamps or hammocks. Dist: Endemic to s. FL.

ID notes: The short, subulate spines of O. keyensis give the appearance of the plant being unarmed until closer inspection.

Origin/Endemic status: Endemic

Taxonomy Comments: The taxonomy of Opuntia is extremely complex; this species is treated here based upon stark morphological distinctions, the field experience of the authors, and in hopes of wider recognition and conservation of this entity which is likely to be critically imperiled. However, more data is needed to determine with confidence the relationships and validity of this taxon.

Synonymy: = S

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