Green-flowered bitterwood (Hannoa chlorantha)
Silhouette: T. Michael Keesey
/ License
Hannoa chlorantha - Characteristics, Distribution and Traditional Uses
Thriving within the lush equatorial rainforests of West-Central Africa, Hannoa chlorantha plays a vital role in its native woodland ecosystems. This woody plant is typically found in mature wet forests, adapted to low-light conditions under the dense canopy.
Local communities occasionally utilize the tree for its bitter compounds and lightweight timber. Its distribution spans several countries, making it a key element of regional biodiversity.
Taxonomy
- β ΡΠ°ΡΡΡΠ²ΠΎ Plantae
- β division Tracheophytes
- β subdivision Spermatophytes (Seed plants)
- β Angiosperms
- β mesangiosperms
- β eudicots
- β Superrosids
- β rosids
- β malvids
- β order Sapindales
- β family Simaroubaceae (Quassia family)
- β genus Hannoa (Hannoa Tree)
- β species Hannoa chlorantha (Green-flowered bitterwood)
Morphology
This species displays characteristic vegetative and reproductive structures that facilitate its survival in humid environments:
- Growth Habit: A medium to large evergreen tree capable of reaching significant heights in the forest canopy.
- Foliage: Alternately arranged, pinnately compound leaves consisting of several pairs of coriaceous (leathery) leaflets with a glossy upper surface.
- Flowers: Small, inconspicuously colored greenish or yellowish-green blossoms clustered in loose paniculate inflorescences.
- Fruit: Small, ellipsoidal drupes that transition to a dark purple or black coloration upon reaching maturity.
Applications
Traditional forest communities have found practical uses for different parts of this tree:
- Traditional Medicine: Infusions prepared from the bark and roots are historically employed to alleviate fevers and gastrointestinal discomfort.
- Woodcraft: The soft, lightweight timber is suitable for carving light household utensils and general carpentry.
Interesting facts
Scientific investigations into the genus suggest several intriguing characteristics:
- Bitter Compounds: Like many of its close relatives, this plant contains natural quassinoids, which impart an intensely bitter taste that deters herbivorous insects.
- Canopy Adaptability: The leathery texture of the leaflets helps the tree retain moisture even during temporary dry spells in the upper canopy layers.
Geography of distribution
- Cameroon
- Republic of the Congo
- Gabon
- Democratic Republic of the Congo
- Angola (Cabinda)
Sources
- Plants of the World Online (POWO), Royal Botanic Gardens, Kew.
- World Flora Online (WFO).
- Global Biodiversity Information Facility (GBIF).