Roystonea lenis

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Roystonea lenis is a palm in the Arecaceae family. It is found only in Guantánamo Province in eastern Cuba, where it is considered endangered.

This palm can grow up to about 20 meters tall. The grey‑white trunk is typically 35–47 cm in diameter. The upper part of the trunk is wrapped by green leaf sheaths that form a crownshaft about 2 meters long. Each plant has around 15 leaves with short petioles of 0.2–0.7 cm and rachises of 4–5.8 meters; the leaves hang fairly horizontal.

The inflorescence is about 1 meter long and bears white flowers (both male and female). The fruit are 11.3–14 mm long and 8.8–11.1 mm wide and turn black when ripe.

Synonym: Roystonea regia var. pinguis.