It grows in wet forests in the centre of Kauaʻi at an elevation of about 1,400 metres (4,600 ft).

The Alakai Swamp pritchardia grows up to 12 metres (39 ft) high, and forms a trunk with a diameter of approximately 100 millimetres (3.9 in).

The leaves are leathery and smooth above, but the undersides are waxy and have a covering of greyish to yellowish tomentum (felt) beneath.

This palm prefers a sunny, well drained, and moist location.

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