Restinga Palm

Allagoptera arenaria is a South American palm associated with coastal sand dunes. In the [Guide to the Palms of Northeastern Brazil](https://www.botanica.org.br/wp-content/uploads/Guide-to-the-Palms-of-Northeastern-Brazil_LNoblick.pdf), Larry Noblick describes its underground stem and arching leaves, which can reach about 1.5–2 m. Kew accepts the species name and records its native range in Brazil. ## Form and habitat The regional palm guide distinguishes A. arenaria from related species by its larger leaves and fruit characters. Its documented dune habitat is useful ecological context, though it does not by itself establish garden performance or salt tolerance. ## Growing conditions Confirm local climate and site conditions before planting. The directly opened references do not provide a complete horticultural profile for water needs, cold limits, or mature garden spread. ## Maintenance Keep the crown clear of damaged foliage and avoid injuring the underground stem. Check local guidance for watering and cold protection where this species is grown outside its native range.