Viburnum lantana

Morphological description

It is a deciduous shrub or small tree, with a bushy habit, which can reach a height between 1 and 5 meters. The stem is woody and covered by brown-pink bark; young branches are thin, flexible and characterized by a dense pubescence composed of stellate hairs and furfuraceous scales, giving them a woolly and gray-green appearance. Older branches take on an ochre color. Branches that touch the ground can root, contributing to the plant's expansion ability. The buds are opposite, tomentose, white and without scales; floral buds are short, conical and develop at the tips of the current year's twigs, while leaf buds are larger, club-shaped and with dentate margins.

The leaves are opposite, ovate-lanceolate or elliptical, with variable sizes from 4-6 cm wide to 6-12 cm long. Their margin is finely dentate or crenate-dentate. The upper surface is dark green, subglabrous and slightly rough, while the lower surface is gray-green, rough and covered by a dense woolly and tomentose pubescence, with well-visible veins. The petiole is arcuate and about 1–3 cm long, also tomentose.

The flowers, hermaphroditic and slightly fragrant, are gathered in terminal umbels of an umbel-like shape, with a diameter that can reach 10 cm and composed of numerous flowers (about 7 rays in the umbel). Each flower has a white campanulate corolla, 6-8 mm wide, formed by five oval and rounded lobes. Before opening, the buds may take on a pinkish color. The calyx is reduced, with five obtuse teeth, while the stamens are five, with white filaments and yellow anthers. The flowers do not show size differentiation between peripheral and central ones.

The fruits are ovoid drupes, slightly flattened laterally, 7-10 mm long. During ripening they change color from green to bright red, then become black and shiny at full maturity. They contain a flat, brown stone, with a characteristic groove on both sides.

The root system is typical of a bushy shrub, capable of producing roots from branches that touch the ground, thus favoring the formation of dense populations.

Habitat and distribution

This species is widespread in southern and central Europe, western Asia and North Africa, with a well-established presence in Italy and the Mediterranean basin. In Italy it commonly grows at the edge of deciduous woods and thickets, preferring heliophilous and thermophilous environments. It is a pioneer species that settles in poor, well-drained and calcium-rich soils, often in association with downy oaks, hornbeams, hazels and hop-hornbeams.

Wayfaring Tree adapts to live from the plains up to 1,400 meters altitude, colonizing forest edges, hedges and shrubs. It generally prefers sunny exposures and calcareous soils, with a good ability to withstand poor soils and relatively dry conditions.

Flowering period

Flowering mainly occurs between April and May, with some local variations depending on altitude and climate. The flowers, white and fragrant, develop in well-visible umbels that attract numerous pollinating insects. Fruiting follows flowering and occurs from August to September, when the drupes mature and change color.

Ecology and pollination

The flowers are hermaphroditic and suitable for entomogamous pollination, mainly by pollinating insects attracted by their scent and pure white color. The presence of compact umbels facilitates simultaneous visits by multiple insects, increasing pollination efficiency.

Seed dispersal occurs thanks to the fleshy fruits, which are consumed by various bird species. These contribute to the plant's spread through seed expulsion in other sites, facilitating colonization of new habitats.

Curiosities and traditional uses

Historically, the young and flexible shoots of Wayfaring Tree have been used as weaving material, replacing willow, both for bindings and basket making. The secondary bark was used to extract an adhesive substance.

From a phytotherapeutic point of view, the species is known for its medicinal properties, although it is toxic if not used correctly. In gemmotherapy, Wayfaring Tree is used as a remedy for allergic asthma, thanks to its ability to calm the pulmonary neurovegetative system and reduce bronchial spasms. The infusion of the inflorescences has anti-inflammatory effects, while that of leaves and young twigs is used externally to prepare compresses applied on corns, ulcers and boils. Moreover, it is useful to strengthen the gums and to counteract small hemorrhages.

The ripe fruits constitute an important food source for birdlife, thus contributing to the ecological balance of the habitats where the species is present.

Etymology

The genus name derives from the Latin "viere," meaning “to weave,” referring to the flexibility of the branches traditionally used for basketry and bindings. The specific epithet "lantana" probably also alludes to this characteristic of bending easily, deriving from the Latin "lentare," meaning “to bend.”

In Italian, the common name “lantana” or “viburno lantana” directly recalls the scientific denomination, while other popular names are linked to traditional use and the physical characteristics of the plant.

Sources

• Prof. S. Pignatti, "Flora d'Italia"
• Acta Plantarum - Flora delle regioni italiane (scheda di Marinella Zepigi)
• Tela Botanica / H. Coste, "Flore descriptive et illustrée de la France"
• World Flora Online (WFO)