Massif de la Selle quassiawood (Picrasma selleana)
Picrasma selleana | Information, Habitat & Botany
High-altitude mountain forests of the Hispaniola island serve as the exclusive sanctuary for Picrasma selleana, a rare woody member of the Simaroubaceae family.
Botanists associate this plant with the cloud forests and pine woodlands of Haiti and the Dominican Republic. Its survival is closely tied to the preservation of these fragile mountain habitats.
Taxonomy
- ∟ царство Plantae
- ∟ division Tracheophytes
- ∟ subdivision Spermatophytes (Seed plants)
- ∟ Angiosperms
- ∟ mesangiosperms
- ∟ eudicots
- ∟ Superrosids
- ∟ rosids
- ∟ malvids
- ∟ order Sapindales
- ∟ family Simaroubaceae (Quassia family)
- ∟ genus Picrasma (Bitterwood Tree)
- ∟ species Picrasma selleana (Massif de la Selle quassiawood)
Morphology
This species typically grows as a small tree or shrub, displaying characteristic features of the bitterwood family. The leaves are pinnately compound, arranged alternately along the slender branches, and possess a distinct bitter taste due to the presence of specialized secondary metabolites.
Small, greenish-yellow flowers develop in axillary clusters during the reproductive phase. The fruits are small drupes that serve as a food source for local avian species, aiding in seed dispersal across the rocky limestone terrain.
Applications
Members of the genus Picrasma are well-known for containing quassinoids, which are highly bitter compounds with natural insecticidal and medicinal properties. While Picrasma selleana is not widely harvested due to its rarity, it remains a valuable subject for biochemical research into organic pest control agents.
Interesting facts
- The specific epithet selleana refers to the Massif de la Selle, a major mountain range in Haiti where the species was historically documented.
- Its bitter compounds act as a natural defense system against herbivores, protecting the foliage from insects and grazing animals.
- Due to the severe deforestation on the island of Hispaniola, the wild populations of this species are highly fragmented.
Geography of distribution
- Haiti
- Dominican Republic
Sources
- Plants of the World Online (POWO): Picrasma selleana Urban
- World Flora Online (WFO): Catalogued under ID wfo-0000424564
- Global Biodiversity Information Facility (GBIF): Occurrence records for Hispaniola