PlantaeDB Logo
Login Sign-up

Genus Luehea in Family Malvaceae

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).

Do you wish to read more about plant taxonomy? Click here!

Genus Description

Suggest a correction!

Luehea is a genus of the family Malvaceae (subfamily Grewioideae; POWO, 2024; WFO, 2024), comprising approximately 40 species of trees and shrubs found from southern Mexico through Central America to northern South America and into the Caribbean (Malvaceae of the World, 2004; GBIF, 2024). The type species commonly cited is Luehea divaricata (K. Schumann) K. Schumann (POWO, 2024).

Morphologically, Luehea is distinguished by its frequently stellate-tomentose indumentum, leaves that are usually palmately veined with stipules that may be persistent or caducous, and inflorescences that are axillary cymes or panicles. Flowers are showy, with five sepals, five petals, and a conspicuous staminal column formed by numerous stamens in phalanges. The ovary is superior, typically five-locular with axile placentation, and the fruit is a septicidal five-valved capsule with winged seeds (Malvaceae of the World, 2004; Taxon, 2009).

Species diversity is highest in the Caribbean basin and northern South America, with several endemic to particular islands or coastal regions (POWO, 2024; GBIF, 2024). Habitats span coastal lowland forest, dry to moist forest, and rocky or limestone outcrops; species such as L. divaricata occur in mixed forest and secondary vegetation. Luehea rufescens is recorded from coastal dunes in Brazil (Flora Neotropica, 1999).

Pollination is likely generalist insect-mediated given floral traits; seed dispersal syndromes vary, including wind-dispersed seeds with wings. Chromosome counts are available for a handful of species but the base number remains insufficiently established for the genus as a whole (Flora Neotropica, 1999; Malvaceae of the World, 2004).

Taxonomically, Luehea was traditionally placed in Tiliaceae and later merged into Malvaceae after molecular work recognized Grewioideae as a well-supported clade within Malvaceae (APG IV, 2016; Taxon, 2009). While sectional or subgeneric treatments have been used historically (Flora Neotropica, 1999), most modern treatments treat Luehea as a cohesive genus without formal subdivisions, though several species complexes remain unresolved (POWO, 2024; WFO, 2024). Alternative circumscriptions, particularly those separating Lueheopsis or including Sparrmannia in Luehea, are recognized but generally rejected by contemporary sources (Malvaceae of the World, 2004).

The genus has minor horticultural value, with a few species planted as ornamentals or shade trees; L. grandiflora is occasionally cultivated in tropical horticulture (Flora Neotropica, 1999). No species are widely invasive, though local spread into secondary growth can occur.

Conservation concerns are diffuse and dataset-dependent; deforestation, habitat fragmentation, and climate shifts threaten coastal and lowland endemics. Comprehensive global assessments remain incomplete, and floristic inventories for the Caribbean basin are a priority (POWO, 2024; GBIF, 2024).

Pick a Species to see its components: