Knowra Lemnoideae Lemnoideae Lemnoideae is a subfamily of Araceae comprising tiny, free-floating aquatic plants known as duckweeds. Its members have highly reduced bodies and reproduce rapidly, often by budding.
Araceae : Araceae is a family of flowering plants that includes aroids such as lilies, philodendrons, and duckweeds. Lemnoideae is classified within this family, despite its members' extreme reduction in form.
Daughter frond : A daughter frond is a new duckweed frond that develops from a budding pocket on a parent frond. Repeated daughter-frond production allows populations to expand without flowering.
Lemna minor : Lemna minor is a widespread duckweed species with small floating fronds, commonly used in laboratory studies. Its rapid clonal growth makes it a standard experimental duckweed.
Pistia stratiotes : Pistia stratiotes, or water lettuce, is a floating aquatic plant in Araceae with a conspicuous rosette of leaves. This aroid retains a recognizable leafy body, unlike duckweeds’ reduced fronds.
Wolffia : Wolffia is a genus of duckweeds whose minute plants lack roots and are among the smallest flowering plants. It represents the most reduced growth form found among duckweeds.
Turion : A turion is a compact, starch-rich resting structure formed by some aquatic plants to survive unfavorable conditions. Some duckweeds form turions that sink and overwinter beneath the water surface.
Wastewater treatment : Wastewater treatment removes contaminants from used water through physical, chemical, or biological processes. Duckweed beds can take up excess nutrients from wastewater.
Lemnoideae morphology : Lemnoideae morphology describes duckweed body forms, including root-bearing fronds and rootless spherical plants. The range of forms helps distinguish genera within the subfamily.
Spirodela : Spirodela is a duckweed genus with relatively large floating fronds and several roots per frond. Its more developed fronds show the structural range within Lemnoideae.
Buoyancy : Buoyancy is the upward force exerted by a fluid that supports an immersed or floating object. Air spaces and body shape help keep duckweed fronds at the water surface.
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