Tocantins simaba (Simaba tocantina)

Silhouette: T. Michael Keesey / License

Simaba tocantina: Botanical Profile & Cerrado Endemic

Amidst the sun-drenched, rugged savannas of the Brazilian Cerrado, a botanical secret thrives in the dry soils of Tocantins. Here, Simaba tocantina has adapted to survive extreme seasonal droughts and intense solar radiation.

This resilient woody species represents a fascinating example of localized endemism within South America's most biodiverse savanna. Scientists find Simaba tocantina particularly interesting due to its highly restricted distribution and unique ecological niche.

Taxonomy

  • царство Plantae
  • division Tracheophytes
  • subdivision Spermatophytes (Seed plants)
  • Angiosperms
  • mesangiosperms
  • eudicots
  • Superrosids
  • rosids
  • malvids
  • order Sapindales
  • family Simaroubaceae (Quassia family)
  • genus Simaba (Simaba Tree)
  • species Simaba tocantina (Tocantins simaba)

Morphology

Simaba tocantina exhibits distinct structural adaptations to cope with the arid conditions of its native habitat. It typically grows as a woody shrub, featuring a deep root system designed to access deep-seated water tables during the dry season.

The leaves of this species are compound, alternating along the stems, and covered with a thick cuticle that minimizes moisture loss. Small, pale flowers form in compact inflorescences, followed by drupaceous fruits containing oil-rich seeds.

Interesting facts

Simaba tocantina is named after the Brazilian state of Tocantins, which serves as its primary evolutionary cradle and only known habitat. The species was discovered and described relatively recently by botanists Adriano Devecchi and José Pirani, highlighting that many Cerrado plants remain hidden to science.

  • The genus name Simaba is derived from the vernacular name of one of its species in Guiana.
  • Its survival strategy relies heavily on fire-resistant bark, a common evolutionary trait among Cerrado woody plants.

Geography of distribution

  • Brazil

Technical Information

External Databases: GBIF, POWO, Tropicos