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Marsilea costulifera/ M. angustifolia - Narrow-leaf Nardoo

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  • Marsilea costulifera/ M. angustifolia - Narrow-leaf Nardoo


    Marsilea costulifera.
    Photo thanks to SOLOMON.

    Name:
    Common: Narrow-leaf Nardoo
    Scientific: Marsilea costulifera
    AKA: Marsilea angustifolia

    Difficulty: Easy
    Light requirements: low, medium or high
    Type: Rhizome
    Temperature: 10 - 35c
    pH:
    Country of Origin: Australia
    CO2: Not required
    Substrate: Aquasoil or DIY in aquariums
    Filtration/Circulation:

    Position in tank: It can be used as a groundcover in medium to high light tanks. It has been reported to work as a groundcover in low light tanks, but may struggle and shoot leaves on higher stems.

    When first planted in the tank, if the stems with leaves are too long, they can be cut off to encourage shorter growth, then the rhizomes planted immediately.

    In the pond it can be planted in pots up to a metre deep (although it would prefer to be nearer the surface), and will send leaves to the surface.

    Propagation: It is propagated through sporocarps – modified leaves on the nodes at the base of leaf stems, which form a hard outer casing around spores. These have been known to successfully germinate after 40 years. These sporocopes are different sizes and shapes for each species, and the most reliable form of identification.

    If planted in a pot, the root ball can be divided and re-potted.

    Ferts: It is a fairly heavy root feeder. It will benefit from liquid ferts as well, but is primarily a root feeder. It can survive in an inert substrate with root tabs, but it won’t thrive as it would in an aquasoil or DIY soil.

    It will melt & die with full-strength algaecide. If this is used at all, it should be at ¼ strength.

    There are about 65 species worldwide of this aquatic fern, and 6 species in Australia, all of which are suitable for use as pond or aquarium plants:
    Marsilea angustifolia/ Marsilea costulifera “Narrow-leaf Nardoo” – grows fast, dark leaves, narrower than other species
    Marsilea costulifera/ Marsilea angustifolia “Narrow-leaf Nardoo” – grows fast, dark leaves, narrower than other species, leaflets (x4) to 8mm
    Marsilea crenata “Scalloped Leaf Nardoo” – serrated edges on leaves
    Marselia drummondii “Common Nardoo”
    Marsilea hirsuta “Hansen’s Nardoo” / “hairy leaved nardoo”
    Marsilea mutica

    Of the exotic varieties grown in Australian aquariums, there is:
    Marsilea minuta – one of the rarest

    To tell Marsileas (Nardoos) apart they should be grown emersed and better yet allowed to flower.

    This nardoo is from Australia

    It occurs naturally in still or slow-moving water margins to a metre deep. It can tolerate droughts, often still growing in drying river banks. It tolerates sand to clay soil.

    It is good for weed suppression, and its sporocarps are food for waterbirds, which contribute to its distribution, along with flooding & the wind carrying the spores.

    It is slightly lighter green in aquariums than M. drummondii.

    Marsilea angustifolia is a synonym for M. costulifera.

    The submersed and emersed leaves are different. The emersed grown leaves have the typical 4 leaved clover look, while the submersed leaves generally has 1 lobe.

    It is a good plant for beginners in ponds, or beginners +1 in aquariums.

    Relevant threads:

    Australian Marsilea sp. List & submersed/ emersed growth differences:
    http://www.aquariumlife.com.au/showt...light=marsilea

    Differentiating between Marsilea (Nardoo) species – with pics of sporocarps:
    http://www.aquariumlife.com.au/showt...arsilea-minuta

    Photo thanks to corlis (Doc)

    Kimberley biotype plant list:
    http://www.aquariumlife.com.au/showt...e-Regent-River

    Marsilea angustifolia/ Marsilea costulifera and Marsilea hirsuta, with pics:
    http://www.aquariumlife.com.au/showt...ea-costulifera

    Marsilea costulerfa:
    http://www.aquariumlife.com.au/showt...light=marsilea

    Marsilea drummondii – how to plant in aquarium (with pics):
    http://www.aquariumlife.com.au/showt...mmondii-Length
    Marsilea dummondii – link to field guide:
    http://www.aquariumlife.com.au/showt...lea-drummondii

    Marsilea hirstuta – low light, how to plant:
    http://www.aquariumlife.com.au/showt...light=marsilea
    Low-tech slow growing carpet:
    http://www.aquariumlife.com.au/showt...light=marsilea
    http://www.aquariumlife.com.au/showt...light=marsilea
    Emergent leaves die off on planting, then new growth comes back:
    http://www.aquariumlife.com.au/showt...light=marsilea
    http://www.aquariumlife.com.au/showt...light=marsilea

    Marsilea minuta – exotic and rare in Australia, weeds readily:
    http://www.aquariumlife.com.au/showt...arsilea-Minuta

    Marsilea mutica - Rainbow nardoo – good pond plant:
    http://www.aquariumlife.com.au/showt...light=marsilea

    References:

    Australian National Botanic Gardens:
    http://www.anbg.gov.au/gnp/interns-2...rummondii.html

    CSIRO:
    http://www.cpbr.gov.au/cpbr/WfHC/Mar...dii/index.html

    The Planted Tank:

    Tropical Fish Keeping:

    Victorian Flora:
    http://www.victorianflora.wmcn.org.a...ntno=242.00000

    Wikipedia - sporocarps:
    http://en.wikipedia.org/wiki/Sporocarp_%28ferns%29

    Pictures:



    Marsilea drummondii.
    Photo thanks to harca.


    Marsilea drummondii.
    Photo thanks to harca


    Marsilea drummondii – Toothleaved form.
    Photo thanks to DiscusEden


    Marsilea mutica.
    Photo thanks to DiscusEden.

    07/07/2014
    DiscusEden
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