Lemnaceae

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Lemnaceae

[lem′nās·ē‚ē]
(botany)
The duckweeds, a family of monocotyledonous plants in the order Arales; members are small, free-floating, thalloid aquatics with much reduced flowers that form a miniature spadix.
References in periodicals archive ?
Lighter flipping chores center around scattered hyacinths, duck weed or other cover thin enough to actually bring the bass to the top without having to dig for it.
Duck weed, a flowering water plant which can double in size every two days, is behind the change and the recent warm spell has provided perfect growing conditions.
I was sorry to see that the fish ponds at St Fagans Castle are coated with duck weed.
Even an old sink will suffice, though it is wise to remember that in small pools in particular, a good covering of duck weed or a small shallow rooted waterlily is important to cut out excessive sunlight, which when combined with the mineral salts present in tap water, is a recipe for water which resembles pea soup.
With a simple dipping net - the kind that children use in ponds and streams - scoop off any duck weed that may have grown.
The duck weed got pushed together and the fish bunched under it.