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Which palms are important sources of starch such as sago?

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Dense grove of acai palm trees (Euterpe oleracea) with slender trunks and abundant green fronds growing on Combu Island in Belem, Para, Brazil. — Palm Wild acai palms (*Euterpe oleracea*) growing on Combu Island in Belem, state of Para in Brazil.

The primary source of sago is the true sago palm (Metroxylon sagu), a species native to the Indonesian archipelago.1

In addition to the true sago palm, other palms that serve as sources of starch extracted from their pith include:

Sugar palm (Arenga pinnata)2
Gebang palm (Corypha elata)2

While the cycad sago (Cycas revoluta) is also used as a source of sago in the Pacific region, it is important to note that it is not a true palm and its extracts require specific processing to remove the neurotoxin cycasin.1