Botanical Identification of Common Myrtle (Myrtus communis)

To identify Common Myrtle (Myrtus communis) accurately, examine its morphological characteristics, taxonomic classification, and diagnostic features.

Common Myrtle (Myrtus communis) Monograph

Scientific Classification

Common Myrtle, Myrtus communis, belongs to the kingdom Plantae, division Magnoliophyta, class Eudicots, order Sapindales, family Myrtaceae, genus Myrtus, and species Myrtus communis. These classifications place it within the flowering plants and the broader group of eudicots, which are characterized by two seed leaves.

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

Botanical Nomenclature and Synonyms

The scientific name of Common Myrtle is Myrtus communis, first described by Linnaeus in 1753. It has several synonyms, including Myrtus ericifolia and Myrtus nana, though these are now considered outdated. Common names vary, such as "Common Myrtle" or "Sweet Myrtle," while regional and historical names reflect its widespread use in traditional medicine across different cultures.

Morphological Characteristics

Common Myrtle is a small to medium shrub with a dense, compact growth habit. Its root system is fibrous and shallow, adapting to various soil types. The stems are woody, aromatic, and often branched, while the leaves are dark green, glossy, and oval-shaped with a waxy texture. The inflorescence consists of clusters of small, fragrant flowers, typically white or pale pink, followed by dark blue or black berries containing small, hard seeds.

Diagnostic Identification Features

Common Myrtle can be distinguished by its opposite, elliptic leaves with a smooth upper surface and a hairy underside, and its small, dark blue-black berries. It differs from similar species like Myrtus nivellei by its more robust growth and the presence of a distinct, aromatic resinous scent when the leaves are crushed.

Natural Habitat and Geographic Distribution

Common Myrtle is native to the Mediterranean region, including parts of southern Europe, North Africa, and western Asia. It thrives in temperate climates with mild winters and warm, humid summers. It prefers well-drained, slightly acidic soils and is typically found at elevations between 0 and 1,500 meters.

Phenology and Growth Cycle

Common Myrtle blooms from late spring to early summer, producing small white or pinkish flowers. Seed formation occurs in late summer to early autumn. For herbal use, the leaves are harvested in early spring, while flowers and berries are collected during their respective blooming and ripening periods.

Phylogenetic Relationships

Common Myrtle (Myrtus communis) belongs to the Myrtaceae family, sharing close phylogenetic relationships with other myrtle species like Myrtus nivellei and Myrtus exalbida. It is closely related to genera such as Syzygium and Eucalyptus, which are also part of the same family. These relationships are supported by shared morphological and genetic traits, including aromatic leaves and floral structures.