Genus Roystonea

Species in the genus Roystonea of plants

Roystonea dunlapiana - Roystonea dunlapiana is a large palm which reaches heights of 20 metres . Stems are grey-white and about 38 centimetres in diameter. The upper portion of the stem is encircled by leaf sheaths, forming a green portion known as the crownshaft which is about 2 m long. Individuals have about 15 leaves with 4-metre rachises; the leaves hang well horizontal. The 1 m inflorescences bear white male flowers with purplish anthers; the female flowers are undescribed. Fruit are 12–14.7 millimetres long and 7.1–9.5 mm wide, and are purplish black when ripe.

Roystonea lenis - Roystonea lenis is a large palm which reaches heights of 20 metres . Stems are grey-white and are usually 35–47 centimetres in diameter. The upper portion of the stem is encircled by leaf sheaths, forming a green portion known as the crownshaft which is normally 2 m long. Individuals have about 15 leaves with 0.2–0.7 cm petioles and 4–5.8-metre rachises; the leaves hang well horizontal. The 1 m inflorescences bear white male and female flowers. Fruit are 11.3–14 millimetres long and 8.8–11.1 mm wide, and black when ripe.

Morass cabbage palm - Roystonea princeps, commonly known as Morass cabbage palm or Morass royal palm is a species of palm which is endemic to western Jamaica.

Roystonea stellata - Roystonea stellata was a large palm which reached heights of 15 metres . The 95 cm inflorescences bore white male and female flowers. Fruit were 9.8–10.5 millimetres long and 7.8–8.5 mm wide, and were black when ripe. The single known collection is not complete enough for a complete description.