Wedge-leaved homalolepis (Homalolepis cuneata)
Homalolepis cuneata: The Bitter Tree of Brazil's Restinga
Deep within the salt-sprayed restingas of the Brazilian coast, a distinctive bitter aroma reveals the presence of a resilient woody survivor. This is where Homalolepis cuneata thrives, anchoring itself in the sandy soils of the Atlantic Forest.
Endemic to the coastal regions of eastern Brazil, this plant is a characteristic element of non-flooded dune forests. Over time, botanical taxonomists have recognized the unique traits of Homalolepis cuneata, reclassifying it from its historical placement in the genus Simaba.
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 cuneata (Wedge-leaved homalolepis)
Morphology
Homalolepis cuneata grows as a woody shrub or a medium-sized tree, reaching heights of 6 to 12 meters in its native habitat. The bark is relatively thin, and when cut, it releases a sharp, medicinal aroma accompanied by an intensely bitter taste, a signature defense mechanism against herbivores.
The leaves are compound, alternate, and pinnately organized, featuring leaflets that are wedge-shaped (cuneate) at their base, which directly inspired the species epithet. Small, inconspicuous flowers emerge in cluster-like inflorescences, displaying cream-colored to whitish-green petals and greenish buds.
Following successful pollination, the plant produces drupaceous fruits that start out green and mature on the branches, containing seeds adapted to the sandy coastal soils.
Flowering season
Typically flowers and fruits from late autumn through winter, peaking between May and September.
Interesting facts
- Medicinal Aroma: The bark of Homalolepis cuneata has a powerful, bitter, medicinal taste when sliced, which is typical of the Simaroubaceae family and serves as a natural deterrent against insects.
- Restinga Specialist: This species has evolved to withstand the nutrient-poor, sandy, and saline soils of Brazil's coastal restinga formations, playing a key role in stabilizing dunes.
- Taxonomic Revision: Originally described as Simaba cuneata in the 19th century, it was officially moved to the genus Homalolepis in 2018 during a major molecular and morphological re-evaluation of the family.
Geography of distribution
- Brazil