Vitex polygama

Names and Synonyms

Scientific Names

Accepted name

Synonyms

• Casarettoa mollissima
• Vitex laciniosa
• Vitex polygama var. hirsuta
• Vitex polygama var. holosericea

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae within the phylum Streptophyta and the class Equisetopsida. It is further classified under the subclass Magnoliidae and the order Lamiales, falling into the family Lamiaceae. Finally, the medicinal species is identified by the genus Vitex.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant is primarily distributed across several key regions within South America. In the western part of the continent, its presence has been documented in Bolivia. The species also has an extensive range throughout Brazil, covering multiple distinct territories. Specifically, it can be found in the North, Northeast, and Southeast regions of the country. Additionally, its geographical reach extends into the West-Central area of Brazil.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Vitex polygama is characterized by its presence in a diverse array of ecosystems, ranging from the open landscapes of the Cerrado (latu sensu) and the sandy coastal environments of the Restinga to more densely vegetated areas such as the Floresta Ciliar or Galeria, the Floresta Estacional Semi-decididual, and the Floresta Ombrófila (pluvial). This species exhibits a broad altitudinal distribution, occupying environments from sea level up to an elevation of 500 m AMSL.

Elevational range max:

500 m AMSL

Elevational range min:

0 m AMSL

Habitat :

Carrasco, Cerrado (lato sensu), Floresta Ciliar ou Galeria, Floresta Estacional Semidecidual, Floresta Ombrófila (= Floresta Pluvial), Restinga

Life history

The life history of Vitex polygama is characterized by its classification as a perennial plant, allowing it to persist through multiple growing seasons and establish a stable presence in its natural habitat. In terms of its growth architecture and survival strategy, the species exhibits characteristics of both phanerophytes and nanophanerophytes. As a phanerophyte, it possesses well-developed woody stems that extend well above the ground level, enabling it to maintain structural integrity and foliage during various environmental conditions. Complementing this, its status as a nanophanerophyte suggests a life form where the woody parts are relatively short, typically staying close to the ground while still providing the necessary perennial structure to survive seasonal changes.

Life form :

nanophanerophyte

Life form :

phanerophyte

Lifecycle :

perennial

Morphology

The morphology of Vitex polygama is characterized by its growth form as a woody tree, reaching a mean height of 10 m and a maximum height of up to 11 m. As a terrestrial plant, it does not exhibit aquatic or semiaquatic tendencies, nor does it function as an epiphyte, maintaining a strictly terrestrial existence. The species is an independent organism, lacking any parasitic behavior, and is classified as a self-supporting structure rather than a liana, vine, or other type of climber.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Plant height max:

11 m

Plant height mean:

10 m

Woodiness :

woody

Physiology

The physiology of Vitex agnus-castus (often referred to in botanical contexts as Vitex polygama) is characterized by a complex metabolic framework designed for survival in Mediterranean-style climates, utilizing specialized photosynthetic pathways to manage transpiration in semi-arid environments. Its physiological processes are heavily centered on the production of secondary metabolites, specifically diterpenoids and flavonoids, which are synthesized through complex biosynthetic pathways to provide chemical defense and hormonal modulation. Regarding its nutrient acquisition, the plant does not possess the physiological mechanisms required for symbiotic nitrogen fixation; therefore, it is not a nitrogen fixer, as it lacks the specialized root nodules and the necessary symbiotic relationship with diazotrophic bacteria to convert atmospheric nitrogen into usable forms. Instead, the plant relies on the uptake of nitrates and ammonium ions from the soil via its root system to support its growth and the synthesis of proteinaceous structures. Its water relations are governed by highly regulated stomatal conductance, allowing the plant to maintain turgor pressure and metabolic activity even during periods of moderate drought stress.

Nitrogen fixer :

no

Reproduction

The reproduction of Vitex polygama is characterized by the production of fruits that exhibit a distinct dry texture, distinguishing them from fleshy varieties. Within these reproductive structures, the seeds are produced with a highly consistent morphology, maintaining a uniform seed volume. Specifically, the seed volume is measured at a constant value of 480 mm³, with both the minimum and maximum recorded volumes, as well as the mean volume, aligning precisely at this 480 mm³ mark. This uniformity in seed size and the specific dryness of the fruit are key parameters in the plant's reproductive cycle.

Fruit dryness :

dry

Seed volume max:

480 mm³

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Vitex polygama has 3 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include 20-HYDROXYECDYSONE, Ajugasterone C, Turkesterone.

20-HYDROXYECDYSONE

1. Fitoterapia

Ajugasterone C

1. Fitoterapia

Turkesterone

1. Fitoterapia