Single-leaved simarouba (Simarouba monophylla)
Simarouba monophylla: Unique Single-Leafed Tropical Tree
Characterized by its unique leaf structure among its peers, Simarouba monophylla stands out as a distinctive tree native to French Guiana. Unlike other members of its genus that typically bear pinnate foliage, this species is noted for its unifoliolate organization.
Botanical collections and taxonomic records highlight its restricted geographic distribution within South American rainforests. It remains a subject of interest for ecological studies looking at diversity in leaf evolution.
Taxonomy
- ∟ царство Plantae
- ∟ division Tracheophytes
- ∟ subdivision Spermatophytes (Seed plants)
- ∟ Angiosperms
- ∟ mesangiosperms
- ∟ eudicots
- ∟ Superrosids
- ∟ rosids
- ∟ malvids
- ∟ order Sapindales
- ∟ family Simaroubaceae (Quassia family)
- ∟ genus Simarouba (Paradise tree)
- ∟ species Simarouba monophylla (Single-leaved simarouba)
Morphology
This woody species grows as a small to medium-sized tree. The most striking morphological feature is the unifoliolate leaf arrangement, where the leaf appears simple rather than pinnately compound.
The leaflets are highly coriaceous with a lustrous upper surface and a duller underside. The inflorescences are arranged in terminal or axillary panicles, bearing small, inconspicuous flowers with parts in groups of five.
The fruit develops into a small, fleshy drupe containing a single seed, which is typical for the genus and adapted for animal-mediated dispersal.
Applications
Local communities utilize the lightweight timber for minor construction tasks and wood crafts. The wood is relatively soft and easy to work with but lacks durability in outdoor environments.
Chemical analyses of related species suggest the presence of quassinoids in the bark and roots. These compounds are of interest for their bitter properties and potential pharmacological applications.
Interesting facts
- The species name monophylla translates to 'single-leafed', referring to its atypical unifoliolate leaves.
- It is one of the least documented species within its genus, largely due to its restricted range in French Guiana.
Geography of distribution
- French Guiana
Sources
- Plants of the World Online (POWO): Kew Science
- World Flora Online (WFO): WFO Portal
- Global Biodiversity Information Facility (GBIF): GBIF Secretariat