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Wolffiella hyalina (Delile) Monod

Introduction & Overview

Common and Scientific Names

  • Scientific Name: Wolffiella hyalina (Delile) Monod
  • Common Name: Hyaline duckweed

Quick Facts

  • Origin: Originates from subtropical freshwater habitats
  • Features: Almost invisible, delicate fronds that float gracefully on water

Taxonomy & Classification

  • Genus: Wolffiella
  • Botanical Background: Described by botanist Delile and later revised by Monod, this species has been a subject of interest due to its minimalistic structure and ecological role in aquatic environments.

Natural Habitat & Distribution

  • Geographical Range: Native to subtropical regions, Wolffiella hyalina is commonly found in slow-moving or still freshwater bodies in parts of North Africa and the Middle East.
  • Environment: Thrives in calm waters with high humidity, soft sediments, and a stable, warm climate, making it well adapted to quiet wetlands and ponds.

Morphological Characteristics

Leaves

  • Small
  • Nearly translucent
  • Rounded
  • Delicate and ethereal appearance

Inflorescence (Spadix & Spathe)

  • Inconspicuous flowers are arranged in small clusters
  • Modest in size with minimal scent
  • Pollination is likely assisted by water movement or wind

Growth Habit

  • Free-floating aquatic herb
  • Lacks extensive rhizomatous growth, instead propagating primarily by simple frond division

Cultivation & Care

Light Requirements

  • Bright, indirect light to avoid overheating while still encouraging healthy growth

Watering & Humidity

  • Constant moisture is crucial
  • Should be maintained in well-oxygenated, clean water to mimic its natural habitat

Soil & Potting Mix

  • Ideal cultivation occurs in aquatic setups
  • If grown in containers, a shallow pot with nutrient-rich aquatic substrate is recommended

Temperature & Fertilizer

  • Subtropical temperature ranges
  • Light feeding of liquid fertilizer can support growth, but care should be taken not to overload the water with nutrients

Propagation Methods

Division

  • Primary method of propagation is through the natural division of its fronds, making it easy to expand a colony


Seeds

  • Rare 
  • Generally not used for propagation due to the efficiency of vegetative reproduction

Common Pests & Diseases

Typical Issues

  • Algae overgrowth
  • Occasional fungal infections in stagnant water

Treatment Recommendations

  • Maintaining clean water with good circulation
  • Occasional manual removal of excess algae is recommended

Notable Traits & Uses

  • A unique, almost ethereal look, which has intrigued both botanists and aquarium enthusiasts
  • Due to its delicate appearance and ease of propagation
  • Use in aquariums and water gardens, where it contributes both aesthetic value and ecological benefits

Conservation & Availability

Wild Population Status

  • Not known to be at risk and remains stable in its native freshwater environments

Market Availability

  • Relatively common in the aquatic plant trade
  • Can often be found at specialized aquatic plant suppliers and garden centers

References & Resources

Further Reading

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