Morat's soulamea (Soulamea moratii)

Silhouette: T. Michael Keesey / License

Soulamea moratii – Endemic Plant of New Caledonia

Endemic to the ultramafic environments of New Caledonia, Soulamea moratii grows as a highly specialized woody plant. This species remains one of the lesser-known members of the Simaroubaceae family. Researchers first described it in 2002, highlighting its unique ecological niche.

It thrives primarily in dense humid forests on serpentine substrates. The evolutionary adaptations of this taxon allow it to tolerate high levels of heavy metals in the soil.

Taxonomy

  • царство Plantae
  • division Tracheophytes (Vascular Plants)
  • subdivision Spermatophytes (Seed plants)
  • Angiosperms
  • mesangiosperms (Core angiosperms)
  • eudicots
  • Superrosids
  • rosids
  • malvids
  • order Sapindales
  • family Simaroubaceae (Quassia family)
  • genus Soulamea (Soulamea Tree)
  • species Soulamea moratii (Morat's soulamea)

Living Pulse

Morphology

Soulamea moratii exhibits several distinct morphological features that distinguish it from its congeners in New Caledonia. Its growth form is typically a small, sparse shrub with relatively thick, woody branches.

The leaves are characterized by the following traits:

  • Arrangement: Alternate and heavily clustered at the terminal tips of the branches.
  • Texture: Thick, coriaceous (leathery) texture, which helps prevent moisture loss in windy ridges.
  • Venation: Pinnate venation with a prominent midrib on the abaxial surface.

The reproductive organs consist of small, greenish-yellow flowers. These flowers mature into dry, winged fruits designed for wind dispersal across the rocky slopes.

Interesting facts

Several intriguing aspects surround the biology of this endemic species:

  • Ultramafic specialist: The plant is adapted to live in toxic, nickel-rich soils that would kill most other plant species.
  • Recent discovery: It was only scientifically recognized and named in 2002 by botanists Jaffré and Fambart.
  • Evolutionary isolation: Like many New Caledonian endemics, it represents a lineage that has evolved in isolation for millions of years.

Geography of distribution

  • New Caledonia

Sources

  • Plants of the World Online (POWO)
  • World Plants (Roskov et al.)
  • Missouri Botanical Garden (Tropicos)
  • International Plant Names Index (IPNI)

Technical Information

External Databases: GBIF, POWO, Tropicos

See also