water velvet

Names and Synonyms

Common Names

• Ferny Azolla
• Mosquito Fern
• Water Velvet
• green azolla
• water-velvet
• Feathered Mosquito Fern

Scientific Names

Accepted name

Synonyms

• Azolla pinnata subsp. pinnata

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

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

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant, known as Azolla pinnata, exhibits a widespread presence across various regions of Australia. It can be found growing in the waters of New South Wales and the Northern Territory. Furthermore, its distribution extends through the tropical and subtropical areas of Queensland. The species is also documented within the southern reaches of South Australia. Finally, its geographical range includes the temperate environments of Victoria.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Azolla pinnata is characterized by its preference for lowland environments, where it thrives in stable aquatic settings. It exhibits a broad vertical distribution across various landscapes, occupying an elevational range that begins at a minimum of 9 m AMSL and extends to a maximum of 1030 m AMSL. This wide altitudinal tolerance allows the species to colonize diverse lowland ecosystems, ranging from coastal marshes to montane wetlands, provided the necessary hydrological conditions are met.

Elevational range max:

1030 m AMSL

Elevational range min:

9 m AMSL

Habitat :

Lowland

Life history

The life history of Azolla pinnata is characterized by a variable lifecycle that can function as an annual, biennial, or perennial depending on environmental conditions, allowing it to adapt to shifting aquatic habitats. As a specialized hydrophyte, it thrives in water environments, utilizing its aquatic adaptations to colonize the surface of stagnant or slow-moving bodies of water. Its vegetative state is consistently evergreen, maintaining its foliage and photosynthetic capabilities throughout its active growth periods without undergoing seasonal leaf shedding. Furthermore, its biological classification as a cryptophyte underscores its survival strategy, where its essential regenerative structures are protected from harsh environmental fluctuations, ensuring its persistence within its niche.

Deciduousness :

evergreen

Life form :

hydrophyte

Life form :

cryptophyte

Lifecycle :

annual

Morphology

The morphology of Azolla pinnata is characterized by its diminutive stature, with a mean plant height of approximately 0.02 m and a maximum height reaching up to 0.05 m. It is classified as an aquatic plant, functioning as a non-woody, self-supporting organism rather than a climber or a vine. Its growth form is defined as a herb and specifically a forb, exhibiting a terrestrial ecological orientation in its epiphytic classification. As an independent species, it does not exhibit parasitic behavior, maintaining a self-sufficient biological structure.

Aquatic :

aquatic

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Plant height max:

0.05 m

Plant height mean:

0.02 m

Woodiness :

non-woody

Physiology

The physiology of Azolla pinnata is characterized by its specialized micro-morphology and specific nutrient processing capabilities. The plant exhibits highly consistent leaf dimensions, with a maximum leaf length of approximately 0.2 cm. Its leaf width remains uniform across various developmental stages, maintaining a mean, minimum, and maximum measurement of 0.2 cm, which contributes to its compact, floating structural integrity. Regarding its metabolic processes, although many species within the Azolla genus are renowned for their symbiotic relationships, the specific physiological profile for this instance indicates that it does not function as a nitrogen fixer (Nitrogen_fix_1: no), distinguishing its nutrient acquisition strategy from nitrogen-fixing varieties.

Leaf length max:

0.2 cm

Leaf width mean:

0.2 cm

Nitrogen fixer :

no

Reproduction

The reproduction of Azolla pinnata is characterized by a complex interplay of biological and environmental processes. In terms of sexual reproduction, the plant utilizes an abiotic pollination syndrome, where the transfer of pollen is mediated by non-living environmental factors, specifically following a water-based pollination syndrome. Once fertilization occurs, the dispersal of its progeny follows an anemochorous syndrome, relying on wind currents to transport reproductive units. Interestingly, within the specific parameters of its reproductive profile, asexual reproduction is noted as absent, placing the primary emphasis on its specialized sexual mechanisms and environmental dispersal strategies.

Dispersal syndrome :

anemochorous

Pollination syndrome :

water

Pollination syndrome :

abiotic

Reproduction asexual :

absent

Sources: Global Inventory of Floras and Traits (GIFT)

Activities

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

Antioxidant

1. Iranian biomedical journal

Conditions

Azolla pinnata has 1 reported investigations on conditions identified across 0 scientific publications and several other databases. The most consistently reported conditions include oxidative stress.

Oxidative stress

1. Iranian biomedical journal

Preparations

Azolla pinnata has 1 reported preparations identified across 0 scientific publications and several other databases. The most consistently reported preparations include Fresh Azolla pinnata.

Fresh azolla pinnata

1. Journal of the Egyptian Society of Parasitology