Botanical Identification of Centella (Centella asiatica)

To identify Centella (Centella asiatica) accurately, examine its morphological characteristics, taxonomic classification, and diagnostic features.

Centella (Centella asiatica) Monograph

Scientific Classification

Centella asiatica belongs to the kingdom Plantae, division Magnoliophyta, class Eudicots, order Rubiales, family Rubiaceae, genus Centella, and species Centella asiatica. These classifications help identify its botanical relationships and place it within the broader context of plant taxonomy.

The following table shows the full taxonomy of this medicinal plant.

Botanical Nomenclature and Synonyms

Centella asiatica is the scientific name of the plant, first described by the botanist Adrien de Candolle in 1803. It is also known by several synonyms, including Hydrocotyle asiatica and Pilea asiatica. Common names such as gotu kola, centella, and brahmi are widely used globally. Regional and historical names reflect its traditional use in various cultures for medicinal purposes.

Morphological Characteristics

Centella asiatica is a low-growing herb with a creeping stem that forms a dense mat. Its root system is fibrous and shallow, anchoring the plant in moist soil. The leaves are round, fleshy, and have a distinctive scalloped edge, while the inflorescence is a compact cluster of small white flowers. The fruit is a three-lobed capsule that releases tiny seeds when mature.

Diagnostic Identification Features

Centella asiatica can be distinguished by its distinctive heart-shaped leaves with prominent veins, hairy stems, and small white flowers. It lacks the opposite leaf arrangement seen in similar species like Hydrocotyle. The presence of a square stem and the characteristic leaf shape are key diagnostic features.

Natural Habitat and Geographic Distribution

Centella asiatica is native to tropical and subtropical regions of Asia, including India, China, and Indonesia. It thrives in warm climates with high humidity. It prefers well-drained, sandy or loamy soils. It is commonly found at low to moderate altitudes, typically below 1,500 meters.

Phenology and Growth Cycle

Centella asiatica blooms from June to September, producing small white flowers. Seed formation occurs from July to October. For identification purposes, the plant is typically harvested during its vegetative stage, from March to June, when the leaves are most abundant and characteristic.

Phylogenetic Relationships

Centella asiatica belongs to the familyApiaceae, sharing characteristics with other members like Petasites and Pimpinella. Its closest relatives include species such as Pimpinella anisum and Petasites alpina. These relationships are supported by morphological and molecular data, highlighting its position within the Apiaceae family.