World's smallest flowering plant, with pics

Discussion in 'General Gardening Discussion' started by SimonZ, Nov 18, 2009.

  1. SimonZ

    SimonZ Gardener

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    Wolffia angusta, a rootless water plant, is regarded as the worldâ??s smallest flowering plant. Its fruits are also the smallest known. Shaped like a blob, it is only around one millimetre round, or as little as only just over half a millimetre long and about 0.2mm wide. Native to Australia, Asia and the Pacific, they are composed of about 40% protein, like the soybean, and are edible to humans, being used as supplement for some mammals. In fact, they are a recognised food in some parts of Asia - albeit in significant quantities! It is also a good food source for fish, waterfowl and ruminant mammals. The plants are part of the â??Duckweedâ? family, and float in freshwater habitats.
    FAMILY: Araceae/Lemnaceae
    HABIT: Perennial
    HEIGHT: Less than 1mm, usually.
    FLOWERING TIME: Summer.
    LEAVES: Round, centres pale white, edges green.
    FLOWERS: One anthers, one pistil. The green flowers are barely noticeable, almost leaflike, and in any case the plant reproduces vegetatively. Each plant, or frond, will reproduce several times before dying.
    FRUIT: Resembling a tiny fig, the fruit weighs around 0.00007 g. The seeds are freeze-resistant.
    PESTS AND DISEASES: Considering that entire plants and many of them may be wholly devoured in one attempt by many animals, it is fair to say that virtually every living creature is a potential predator of Wolffia angusta. It is also hard to imagine the tiny plants withstanding a disease, as surely any virus or fungi worth its salt would take little time to totally infect the plant. However, most of the duckweeds, including Wolffia angusta suffer few actual pests per se, one reason they are often chosen to be grown as animal feed and for protein supplementation - it lessens the risks and cuts down on costs of pest management. Duckweed toxicity is hotly debated, but in controlled growth environments these plants only exhibit toxicity when fed over and above specific levels.
    LINKS:
    Over five thousand plants in one thimble:
    http://waynesword.palomar.edu/images/thimble2.gif
    Close up of individual plants:
    http://keys.lucidcentral.org/keys/a...ia/Images/Newtaxonimages/wolffia_spp_2_SW.jpg
     
  2. PeterS

    PeterS Total Gardener

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    I bet that's a b potting up seedlings :D - thanks Simon
     
  3. capney

    capney Head Gardener

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    We learn some stuff in these boxes... thanks Simon
     
  4. redstar

    redstar Total Gardener

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    It is so wonderful to see this Simon. The microscopic size of this reminds me of our human seeds also. How even within both seeds there is even smaller pattern communication giving instruction of size shape and color. The wonders of Gods Creation.
     
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