Britton & Small, Journal of the New York Botanical Garden 20: 31, 1919

Herbarium; Herbarium; Black and White Photograph

Original Description

What is Opuntia keyensis?

Opuntia keyensis is native Florida prickly pear cactus found in the Keys and Cape Sable.

Majure, L.C., Puente, R., Griffith M.P, Judd W.S., Soltis P.S and Soltis, D.E. (2012b) Phylogeny of Opuntia s.s. (Cactaceae): Clade delineation, geographic origins, and reticulate evolution. American Journal of Botany, 99:847.

Details

O. keyensis is a large, erect, multi-branched cactus that forms a shrub or small tree growing to 3 m tall, but shorter individuals are common. The bright-green cladodes are oval, obovate, or even spatulate–thick and 10-30 cm long. The spines are short and hidden within the 1 cm long glochids, but this prickly pear definitely has spines. The spines are stout, pink when new and salmon-colored at maturity. There are 4-13 spines per areole.

The flowers are solitary or several per cladode and pale pink or salmon-colored. The buds are short-pointed. The corolla is cup-like or short-campanulate, 3-3.5 cm wide, with relatively few tepals. The fruit is obovoid and 4-6 cm long, with a strong narrowing at the base. Seeds are numerous.

Ploidy is unknown.

See GenBank locus JF787387.1.

Other Notes

O. keyensis is found on hammocks in the Florida Keys and in the Cape Sable region. It is found only near the ocean. It is a suitable garden plant for large gardens in frost-free areas.