Endemic to the coastal limestone terraces of Cuba, Castela brittonii has adapted to endure extreme xerophytic conditions. This highly specialized shrub grows in harsh, saline-influenced environments where few other woody species can survive.
Characterized by its stunted growth habit, this woody shrub rarely exceeds 1.5 meters in height. The branches are stiff and terminate in sharp thorns, providing protection against browsing animals and harsh coastal winds.
Its reproductive and vegetative parts show distinct features:
This species is highly adapted to limestone substrates, a phenomenon known as calcicole behavior. Its ability to extract moisture from rocky crevices allows it to thrive during prolonged dry seasons when other plants perish.
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