Genus Woodfordia in Family Lythraceae
In botanical taxonomy, a genus (plural genera) is a rank used to group closely related species within a family. In the hierarchy, genus sits below family and above species.
Genera are defined by shared morphological, anatomical, and genetic characteristics (for example, features of flowers, fruits, seeds, or leaves) that indicate a close evolutionary relationship among the species they contain.
Each genus can include one or more species. Examples include Rosa (roses) and Solanum (nightshades, including tomato and eggplant).
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Genus Description
Suggest a correction!Woodfordia, a small genus in the family Lythraceae, includes about two accepted species that differ mainly in flower number per node (WFO, 2024; POWO, 2024). Woodfordia fruticosa (L.) Kurz is the widespread tropical Asian and African taxon, and W. uniflora (Lam.) Koehne is restricted to Madagascar; both are the basis for current circumscriptions (Dassanayake & Fosberg, 1983). As typical lythrads the plants are shrubs to small trees bearing opposite or whorled leaves that are entire and lack stipules. Inflorescences are axillary, frequently glomerulate, with red to orange-red, short- to long-tubular flowers on short pedicels. The perianth is usually five-lobed with spreading lobes, and the androecium comprises 10–16 stamens inserted in two whorls within the hypanthium, the longer exserted ones providing a conspicuous display (Ghora & Panigrahi, 1989). The ovary is superior, with axile placentation, and matures into a thin-walled, papery to leathery capsule that opens along valves to release numerous small, wind-dispersed seeds (Graham et al., 1993).
The center of diversity lies in tropical Asia with extensions into eastern Africa; W. fruticosa is a characteristic constituent of seasonally dry thorn scrub and open savanna to lowland dry forest up to mid-elevations, while W. uniflora occupies similar habitats in Madagascar (Verdcourt, 1995). Basic chromosome number x=8 is reported for W. fruticosa (see contributors in Löve, 1984). The showy flowers indicate insect pollination, and the lightweight seeds are adapted to wind dispersal, consistent with family-level biology (Graham et al., 1993).
No subgeneric classification is widely applied in modern treatments; phylogenetic placements consistently situate Woodfordia within Lythraceae, nested near genera with similar calyciflorous flowers (APG IV, 2016). Recent monographs recognize two species and reject numerous historic segregates proposed in 19th‑century literature (Koehne, 1903; Verdcourt, 1995).
Beyond horticulture, W. fruticosa is cultivated for ornamental flowers and occasionally for tannins in bark and leaves (Dassanayake & Fosberg, 1983). It has local horticultural value but is not a major timber or crop species. Its weedy potential is limited by harsh, dry habitats rather than invasive spread.
Conservation assessments are uneven, but habitat loss and overuse could threaten island and peripheral populations (Verdcourt, 1995). Targeted surveys and ex situ cultivation would strengthen long-term persistence, particularly for the Madagascar endemic.