giant salvinia

Salvinia molesta · Accepted scientific name

Scientific literature: Very Sparse (1 studies) · ★☆☆☆☆

Giant salvinia, scientifically known as Salvinia molestia, is a highly invasive floating aquatic fern. Characterized by its rapid growth and hairy leaves, it forms dense mats that obstruct waterways, deplete oxygen levels, and disrupt local ecosystems. Controlling this aggressive species is critical for maintaining healthy, functional aquatic environments globally.

Family
Salviniaceae
Native range
Europe
Parts used
Not available
Common names
Not available
Scientific synonyms
Salvinia Adnata

Names and Synonyms

Scientific Names

Accepted name

Salvinia molesta

Synonyms

Regional and Traditional Names

French:

  • salvinie géante

Sources: Wikidata

Taxonomical Classification

This plant belongs to the kingdom Plantae and is classified under the phylum Streptophyta and class Equisetopsida. Within the subclass Polypodiinae, it falls under the order Salviniales and the family Salviniaceae. Finally, it is identified by the genus Salvinia.

Rank Classification
Kingdom Plantae
Phylum Streptophyta
Class Equisetopsida
Subclass Polypodiinae
Order Salviniales
Family Salviniaceae
Genus Salvinia

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a specific geographical distribution across various parts of the European continent. In Northern Europe, its presence can be documented in Denmark. Moving into Middle Europe, the species is found within the borders of Austria and Belgium. It also populates aquatic environments throughout Germany. Finally, its range extends further into Middle Europe to include Hungary.

Region Area
Northern Europe Denmark
Middle Europe Austria
Middle Europe Belgium
Middle Europe Germany
Middle Europe Hungary
Middle Europe Netherlands
Southwestern Europe Corse
Southwestern Europe France
Southwestern Europe Portugal
Southeastern Europe Italy

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Salvinia molesta is characterized by its presence in specific aquatic and riparian environments, primarily thriving within Floresta Ciliar or Galeria (riparian or gallery forests) and as part of diverse Vegetação Aquática (aquatic vegetation) communities. This species occupies a broad vertical distribution across varying landscapes, ranging from sea level up to an elevation of 1500 m AMSL. Its ability to colonize these lentic ecosystems allows it to integrate into the complex structural layers of wetland habitats, where it plays a significant role in the local aquatic vegetation dynamics within its established altitudinal gradient.

Elevational range max:
1500 m AMSL
Elevational range min:
0 m AMSL
Habitat :
Floresta Ciliar ou Galeria, Vegetação Aquática

Life history

The life history of Salvinia molesta is characterized by a perennial lifecycle, allowing the plant to persist and expand across aquatic environments over multiple seasons. As a specialized hydrophyte, it is perfectly adapted to living in water, utilizing its unique morphology to thrive in floating aquatic habitats. This species maintains an evergreen status, ensuring that its photosynthetic structures remain functional throughout its growth period without the need for seasonal shedding. Furthermore, its biological classification includes a cryptophyte life form, reflecting its specialized survival strategies within its niche ecosystem.

Deciduousness :
evergreen
Life form :
hydrophyte
Life form :
cryptophyte
Lifecycle :
perennial

Morphology

The morphology of Salvinia molesta is characterized by its aquatic growth habit, functioning as a free-floating herb and forb that inhabits water bodies. As a non-woody, independent organism, it does not exhibit parasitic or epiphytic tendencies, maintaining a terrestrial-like structural independence while living in an aquatic environment. The plant is self-supporting rather than a climber or liana, and it maintains a very diminutive stature with a plant height ranging from a minimum of 0.01 m to a maximum of 0.35 m.

Aquatic :
aquatic
Climber :
self-supporting
Epiphyte :
terrestrial
Growth form :
herb
Growth form :
forb
Parasite :
independent
Plant height max:
0.35 m
Plant height min:
0.01 m
Woodiness :
non-woody

Physiology

The physiology of Salvinia molesta is characterized by a specialized morphological and metabolic structure adapted for rapid aquatic proliferation. The plant utilizes a C3 photosynthetic pathway to facilitate carbon fixation, supporting its high growth rates in various aquatic environments. Its foliage exhibits significant morphological variation in size, with leaf lengths ranging from a minimum of 1 cm to a maximum of 4 cm. The leaves maintain a highly consistent width, with both the mean and the extreme minimum and maximum measurements recorded at 2 cm. Furthermore, the plant does not possess the physiological capability to act as a nitrogen fixer, relying instead on the absorption of available nutrients from its surrounding water medium to sustain its metabolic processes.

Leaf length max:
4 cm
Leaf length min:
1 cm
Leaf width mean:
2 cm
Nitrogen fixer :
no
Photosynthetic pathway :
C3

Reproduction

The reproduction of Salvinia molestia is characterized by a highly efficient combination of sexual and asexual strategies. Asexual reproduction is present, allowing the plant to rapidly colonize aquatic environments through vegetative fragmentation and budding. In terms of sexual processes, the plant utilizes an abiotic pollination syndrome, specifically adapted for a water-based environment through water pollination. The resulting fruit type is classified as other, falling outside the standard botanical categories like capsules or berries. Following fertilization, the dispersal of the species is primarily zoochorous, utilizing animals for movement, which is further specified by a secondary zoochorous dispersal syndrome to facilitate its spread across various habitats.

Dispersal syndrome :
zoochorous
Fruit type :
other
Pollination syndrome :
water
Pollination syndrome :
abiotic
Reproduction asexual :
present

Sources: Global Inventory of Floras and Traits (GIFT)

Activities

Salvinia molesta has 1 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include Antioxidant.

Activities reported in Salvinia molesta
Activity Supporting sources Consensus
Antioxidant 1 supporting sources ★☆☆☆☆

Antioxidant

  1. Drug development research

Preparations

Salvinia molesta has 2 reported preparations identified across 0 scientific publications and several other databases. The most consistently reported preparations include aqueous methanol extract, butanol extract.

Preparations reported for Salvinia molesta
Preparation Supporting sources Consensus
Aqueous methanol extract 1 supporting sources ★☆☆☆☆
Butanol extract 1 supporting sources ★☆☆☆☆

Aqueous methanol extract

  1. Drug development research

Butanol extract

  1. Drug development research