Sand homalolepis (Homalolepis arenaria)

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Homalolepis arenaria: Guide to the Sand-Dwelling Species

Woody vegetation along the eastern coast of South America includes specialized flora adapted to saline winds and nutrient-poor substrates. Among these coastal survivors, Homalolepis arenaria stands out as a distinctive species native to Brazil. This plant plays a key role in stabilizing sandy dune systems.

Botanists recently transferred this species from the genus Simarouba following comprehensive taxonomic revisions. It remains an important component of the local restinga shrublands, particularly in the states of Bahia and EspΓ­rito Santo.

Taxonomy

  • ∟ царство Plantae
  • ∟ division Tracheophytes
  • ∟ subdivision Spermatophytes (Seed plants)
  • ∟ Angiosperms
  • ∟ mesangiosperms
  • ∟ eudicots
  • ∟ Superrosids
  • ∟ rosids
  • ∟ malvids
  • ∟ order Sapindales
  • ∟ family Simaroubaceae (Quassia family)
  • ∟ genus Homalolepis (Homalolepis Tree)
  • ∟ species Homalolepis arenaria (Sand homalolepis)

Morphology

Adapting to dune environments requires specific physical characteristics. The species displays several distinct morphological traits:

  • Growth Habit: Typically grows as a hardy woody shrub or a small tree.
  • Foliage: Features alternate, pinnately compound leaves with thick, leathery leaflets designed to reduce water loss.
  • Flowers: Small, greenish-yellow flowers are arranged in branched panicles.
  • Fruit: Produces small drupes that darken as they ripen.

Applications

Ecological applications of this species focus on habitat preservation:

  • Dune Stabilization: Deep root systems help bind loose coastal sand.
  • Wildlife Support: Flowers and fruits provide food for native insects and birds.

Interesting facts

Scientific studies and naming history reveal fascinating details:

  • Epithet Meaning: The name arenaria is derived from the Latin word for sandy places, indicating its preferred habitat.
  • Taxonomic Revision: Modern DNA analysis led to its transfer from the genus Simarouba to Homalolepis.

Geography of distribution

  • Bahia
  • EspΓ­rito Santo

Sources

  • Plants of the World Online (POWO)
  • World Flora Online (WFO)
  • Global Biodiversity Information Facility (GBIF)

Technical Information

External Databases: GBIF, POWO, Tropicos