Palm  (Roscheria melanochaetes)

IUCN Red List species status – Near Threatened
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Facts – Palm

KingdomPlantae
PhylumTracheophyta
ClassLiliopsida
OrderArecales
FamilyPalmae
GenusRoscheria (1)
SizeHeight: up to 8 m (2)

Status – Palm

Classified as Near Threatened (NT) on the IUCN Red List (1).

Description – Palm

This solitary palm tree is the smallest of the Seychelles palms (2). The slender stem may grow up to 8 metres high and is ringed with black spines near to the growing shoot (3). Young leaves are an arresting coral-red colour; they reach up to 2.5 metres long and are feather-like at maturity with leaflets on either side of the midrib (2). Both male and female flowers are found on the same tree; they are small and yellow, borne on solitary, metre-long inflorescences (2). Rounded fruits that may be up to 6 cm long develop; these ripen to a deep red colour at maturity (2).

Range – Palm

Endemic to the Seychelles, this palm is only known from the islands of Mahé, Silhouette and Praslin within the archipelago (3).

Habitat – Palm

Found in moist forests, on steep hillsides (1), seldom below 500 metres above sea level (2).

Biology – Palm

The species name of melanochaetes refers to the black spines covering the trunk of this palm; the spines are believed to have evolved as a defence against giant tortoises, the only natural large herbivores in the islands. R. melanochaetes normally grows at high altitudes, where tortoises rarely ventured and consequently this species has fewer spines than any other endemic palm (except for the giant coco-de-mer, Lodoicea maldivica) (4).

Threats – Palm

This small palm species is under threat from habitat destruction in the form of infrastructure development, it is also at risk from the introduction of invasive species (1).

Conservation – Palm

Much of the range of this species is within the Morne Seychellois National Park on the island of Mahé; the Silhouette population is the subject of conservation work by the Silhouette Conservation Project of the Nature Protection Trust of Seychelles (4) (5).

Authentication

Authenticated (6/5/03) by Justin Gerlach. Scientific Co-ordinator, The Nature Protection Trust of Seychelles.
http://islandbiodiversity.com

Glossary

  • Endemic: a species or taxonomic group that is only found in one particular country or geographic area.
  • Inflorescences: the reproductive shoots of the plant, which bear flowers.
  • Leaflets: the individual 'leaf-like' parts of a compound leaf.

References

  1. IUCN Red List (February, 2003)
    http://www.iucnredlist.org
  2. Wise, R. (1998) A Fragile Eden. Princeton University Press, New Jersey.
  3. Robertson, S.A. (1989) Flowering Plants of the Seychelles. Royal Botanic Gardens, Kew.
  4. Gerlach, J. (2002) Pers. comm.
  5. Nature Protection Trust of Seychelles (May, 2003)
    http://islandbiodiversity.com
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Image credit

Roscheria melanochaetes
Roscheria melanochaetes

© John Dransfield / Royal Botanic Gardens, Kew

Royal Botanic Gardens, Kew
Richmond
Surrey
TW9 3AB
United Kingdom
Tel: +44 (0) 208 332 5000
Fax: +44 (0) 208 332 5197
info@kew.org
http://www.rbgkew.org.uk

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