Metroxylon amicarum

Metroxylon amicarum (amicarium Latin – 'of friends' also known as the Caroline ivory-nut palm) is a species of flowering plant in the family Arecaceae, endemic to the Caroline Islands. It was named for the Friendly Islands, now Tonga, from where it was first thought to have descended. It is the only species in the Metroxylon genus which is not hapaxanthic.

Metroxylon amicarum
Metroxylon amicarum at Ke'anae Arboretum

Near Threatened  (IUCN 3.1)[1]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Arecales
Family: Arecaceae
Genus: Metroxylon
Species:
M. amicarum
Binomial name
Metroxylon amicarum

Description

Usually growing to 20 metres (66 ft), but occasionally over 25 m (82 ft), these massive palms have solitary trunks with widely spaced leaf-scar rings and old leaf bases attached to the top. Leaves are pinnately arranged, 5 m (16 ft) long, on 1-metre (3 ft 3 in) petioles. The lanceolate leaflets are dark green to 1 m (3 ft 3 in) and occur on the rachis at varying angles, creating a plumose leaf. Unlike its monocarpic relatives, this species has a narrow inflorescence which develops within the leaf-bases; the stem is erect until the fruit matures and then sags to a pendent cluster. The single-seeded fruit are 9 centimetres (3.5 in) long, extremely hard, and are covered in brown, glossy scales. Of all species in the genus it is probably the most hardy to cold. It is found only in the Federated States of Micronesia. It is threatened by habitat destruction.

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References
  1. Bachman, S. & Chadburn, H. 2015. Metroxylon amicarum. The IUCN Red List of Threatened Species 2015: e.T38610A44533123. https://dx.doi.org/10.2305/IUCN.UK.2015-2.RLTS.T38610A44533123.en http://oldredlist.iucnredlist.org/details/38610/0 Downloaded on 23 September 2017.
  • Amato, John (2010–2011). "Photos of Ivory-nut Carving". Pohnpei, Micronesia. Retrieved 25 November 2014.
  • Lee Ling, Dana. "Metroxylon amicarum". College of Micronesia. Retrieved 25 November 2014.
  • "Metroxylon amicarum - Arecaceae". People and Plants of Micronesia. University of Hawaiʻi at Mānoa. 2014. Archived from the original on 29 November 2014. Retrieved 25 November 2014.
  • Media related to Metroxylon amicarum at Wikimedia Commons
  • Data related to Metroxylon amicarum at Wikispecies
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