Agave Nigra.
Sharkskin Agave, Agave x ferdinandi-regis x scabra

Description.
Suckulent rosette reaching up to 1m tall at maturity with thickly succulent, heavily keeled leaves and smooth margins tipped with stout black terminal spines.
A naturally occurring hybrid of Agave victoriae-reginae with Agave scabra(asperrima). Best known as Sharkskin Agave because of the color and texture of the leaves.
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