Mexican Bitterwood (Picrasma mexicana)
Picrasma mexicana | Mexican Bitterwood Species Profile
Endemic to the diverse landscapes of Mexico, Picrasma mexicana inhabits dry tropical forests and deciduous woodlands. This resilient woody plant plays a subtle yet important role in stabilizing soils and providing shelter for local fauna within its native range.
Its distribution spans several Mexican states, including Chiapas, Jalisco, and Veracruz. Botanists study this species to better understand the evolutionary history of the Simaroubaceae family in Mesoamerica.
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 mexicana (Mexican Bitterwood)
Morphology
Growing as a deciduous shrub or a small tree, this species features smooth greyish bark and young twigs that are often covered in fine lenticels. The leaflets are arranged in a pinnate structure, exhibiting an oblong-lanceolate shape with entire margins.
Tiny, inconspicuous flowers are organized in loose, branching cymes that emerge from the leaf axils. The plant produces small, rounded drupaceous fruits that turn darker as they reach maturity, containing a single hard seed.
Applications
Extracts from the bark and wood of Picrasma mexicana have been traditionally used in local ethnobotanical practices for their intense bitterness. Modern research interests focus on the isolation of quassinoids, which exhibit potential anti-inflammatory and antiparasitic bioactivities.
Interesting facts
- The species was first scientifically described by the American botanist Townshend Stith Brandegee in 1924.
- It survives in seasonally dry habitats by shedding its leaves during the dry season to conserve water.
- The bitter taste of its wood is so potent that it historically deterred wood-boring insects, preserving the plant's structural integrity.
Geography of distribution
- Mexico
Sources
- Plants of the World Online (POWO): Picrasma mexicana Brandegee
- International Plant Names Index (IPNI): Record for Picrasma mexicana
- Global Biodiversity Information Facility (GBIF): Species distribution data in Mexico