PlantaeDB Logo
Login Sign-up

Genus Actinodaphne in Family Lauraceae

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!

Actinodaphne (Lauraceae) comprises about 115 evergreen species distributed from Sri Lanka and the Indian subcontinent to the Philippines, New Guinea and northern Australia (POWO, 2024; WFO, 2024). The genus is typified by Actinodaphne (see Van der Werff, 1991). Plants are dioecious; leaves are alternate, entire, leathery, usually densely brown‑tomentose when young. Stipules are absent. Inflorescences are axillary panicles bearing unisexual flowers with six tepals in two whorls and nine fertile stamens in three whorls, the inner whorl bearing two‑celled anthers. The ovary is superior with a single basal ovule; fruit is a fleshy drupe (Van der Werff, 1991; Kostermans, 1978).

Malesia holds the greatest diversity; narrow endemics include A. kerrii in northern Thailand and A. sikkimensis in the Eastern Himalaya, while others occupy lowland to montane forest up to 2000 m (Lee et al., 2020). The genus follows an Indo‑Malesian pattern with few Australian disjuncts. Habitat loss is the chief threat; several species are regionally vulnerable (WFO, 2024).

Pollination is inferred from occasional field observations to involve small beetles and flies (Luo et al., 2020). Chromosome counts are consistently 2n = 24, indicating a base number x = 12 (Liu et al., 2020). Seed dispersal is presumed by birds or mammals attracted to the fleshy drupes; vegetative reproduction has not been documented.

Molecular studies place Actinodaphne in a monophyletic clade within core Lauraceae (Van der Werff, 1991; Lee et al., 2020). Historically informal groups based on leaf size and indumentum have been proposed, but recent revisions synonymise several former species under Cinnamomum and Neocinnamomum, reflecting morphological overlap noted by Kostermans (1978). Alternative treatments merging Actinodaphne into a broader Cinnamomum remain contested, and generic limits continue to be refined.

Some species provide timber, e.g., A. javanica supplies valued hardwood in Java, and a few are used as ornamental street trees. Aromatic foliage of several Indian species serves locally as spice or incense, though the genus is not a major crop.

Habitat loss and limited distribution render many taxa vulnerable; updated range maps and genetic studies are needed for effective conservation (WFO, 2024). Ongoing field and molecular work will be crucial for clarifying species boundaries and implementing protection measures.

Pick a Species to see its components: