Roystonea borinquena

Roystonea borinquena is large palm which usually reaches a height of 12 to 18 metres (40 to 60 ft), but individuals 26.4 m (87 ft) have been recorded.  Stems are smooth and grey-brown to cinnamon-brown, and range from 25–70 centimetres (10–28 in) in diameter.  Leaves are 2.4–3.7 m (7.9–12.1 ft) long, with short petioles and leaf sheathes 1–3 m (3.3–9.8 ft) long which encircles the upper portion of the stem, forming a crownshaft.  The 1–1.4 m (3.3–4.6 ft) inflorescences bear creamy yellow male and female flowers; the anthers of the male flowers are bright purple.  The fruit is single-seeded, about 13 millimetres (0.5 in) long and 10 mm (0.4 in) wide.  The greenish-yellow immature fruit turn brownish-purple as they ripen.

Roystonea Borinquena

Roystonea borinquena

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