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Actinorhytis calapparia

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Actinorhytis calapparia (Blume) H.Wendl. & Drude ex Scheff.

Family Name: Arecaceae (Palmae)
Synonyms: Seaforthia calapparia (Blume) Mart., Areca calappariaBlume, Actinorhytis poamau Becc.
Common Name: Pinang Penawar, Calappa Palm, Actinorhytis, Tañgalo, Mak-prao

Name

Family Name
Genus Epithet
Species Epithet
Name Authority
Name Status (botanical)
Synonyms
Common Names
Comments

Classifications and Characteristics

Plant Division Angiosperms (Flowering Seed Plants) (Monocotyledon)
Plant Growth Form Palm (Solitary Habit)
Lifespan (in Singapore) Perennial
Mode of Nutrition Autotrophic

Biogeography

Native Distribution New Guinea and the Solomon Islands
Native Habitat Terrestrial (Primary Rainforest)
Preferred Climate Zone Tropical
Local Conservation Status Non-native (Horticultural / Cultivated Only)

Description and Ethnobotany

Growth Form It is a tall solitary palm, up to 15m tall. Trunk is marked with leaf scars and presence of a large cluster of roots at the base.
Foliage The fronds are large (2.1 – 3m long), strongly arching and consist of many regularly arranged leaflets (about 45 cm long). The upper surface of the midrib is covered with both small dot-like and thin, elongated scales with ragged margins. The crown sheath is slender and has scattered scales, which fall off early. The petiole (leaf stalk) is long when young but are shorter in more mature palms.
Flowers The inflorescence is highly branched and consists of both male and female flowers (monoecious). The male flowers are asymmetrical in bud while the female flowers are globular, much larger than male flowers at maturity.
Fruit The fruit is large (about 6 cm long), oval shaped, and smooth. Fruit turns from green to red when ripe, with persistent perianth. Seed is globose with deeply ruminate endosperm.
Habitat It grows in lowland rainforest up to 1000m altitude.
Cultivation It is a water loving palm which cannot withstand drought. It is propagated by seeds.
Etymology Greek Aktis, ray; Greek rhytis,  wrinkle or fold, which refers to the ruminations in the endosperm.
Ethnobotanical Uses Others: The seed may be chewed as a betel substitute. Seed kernel were reportedly pounded and used as baby powder. Fruit is sometimes used in a lotion to treat scurf.

Landscaping Features

Desirable Plant Features Ornamental Form
Landscape Uses Parks & Gardens

Fauna, Pollination and Dispersal

Pollination Method(s) Biotic (Fauna) (Insects (Bee))

Plant Care and Propagation

Light Preference Full Sun
Water Preference Moderate Water
Plant Growth Rate Fast to Moderate
Rootzone Tolerance Well-Drained Soils
Propagation Method Seed

Foliar

Mature Foliage Colour(s) Green
Foliar Shape(s) Palm Fronds

Non - Foliar and Storage

Trunk Type (Palm) Solitary Habit
Root Type Underground (Fibrous Root)

Floral (Angiosperm)

Flower Grouping Cluster / Inflorescence
Flower Location Axillary

References

References Dransfield, J., Uhi, N.W., Asmussen, C.B., Baker, W.J., Harley, M.M. & Lewis, C.E. . 2008. Genera Palmarum. The Evolution and Classification of Palms. . United Kingdom: Kew Publishing. 732

Riffle, R.L., Craft, P. & Zona, S. . 2012. The Encyclopedia of cultivated palms. London: Timber Press. 517

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Master ID 1967
Species ID 3259
Flora Disclaimer The information in this website has been compiled from reliable sources, such as reference works on medicinal plants. It is not a substitute for medical advice or treatment and NParks does not purport to provide any medical advice. Readers should always consult his/her physician before using or consuming a plant for medicinal purposes.
Species record last updated on: 22 October 2025.
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