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Blechnum nudum

Fishbone Water-fern

Densely tufted perennial fern with erect fronds, on thick erect rhizome (rooting stem), sometimes forming a short trunk. Forms large colonies. Sterile and fertile fronds dissimilar. New growth yellowish.

Additional information

  • FamilyBlechnaceae
  • StoreyLower storey
  • Size0.5-1 m x 0.5-1 m
  • Plant groupingFerns & Fern Allies
  • LeavesElliptic mid green sterile fronds, once divided. Oblong leaflets crowded, spreading with wide stalkless bases. Fertile fronds stiffly erect, segments narrow, shorter, separated. Shiny black stems and scales.
  • FlowersNon-flowering. Narrow, continuous spore cases covering either side of midvein. Segment margin curved back partly covering spores.
  • Bird attractingNo
  • Butterfly attractingNo
  • Frog habitatYes
  • Growing conditionsMoist alluvial soils along margins of watercourses and shaded gullies in riparian, moist and wet forests. Tolerates periods of flooding. Semi shade to dappled shade.
  • Garden useFerneries, sheltered gullies and beside water areas. Protect from hot sun and drying winds. Containers.
  • Commercially availableAustralian plant & indigenous nurseries
  • Conservation statusWidespread within the Shire
  • Aboriginal Use In some areas - food - starchy rhizome eaten raw or roasted
Photographer/s: Marilyn Bull ©

Plant Communities

  • 01 Alpine Ash Montane Damp Forest (EVC 38)
  • 15 Scented Paperbark Riparian Thicket - Middle & Upper Yarra (EVC 59)
  • 04 Alpine Ash Montane Wet Forest (EVC 39)
  • 16 Messmate Shrubby Foothill Forest Central Highlands/UpperYarra (EVC 45)
  • 05 Mountain Ash Forest - Central Highlands (EVC 30)
  • 20 Messmate Lowland Forest (EVC 16)
  • 06 Mountain Ash Wet Forest - Dandenongs (EVC 30)
  • 22 Silver-leaf Stringybark Heathy Woodland (EVC 48)
  • 07 Mountain Grey Gum Damp Forest - Central Highlands (EVC 29)
  • 30 Swamp Gum Swampy Riparian Woodland (EVC 83)
  • 08 Mountain Grey Gum Damp Forest – Dandenongs (EVC 29)
  • 33 Mountain Swamp Gum Swampy Riparian Woodland (EVC 83)
  • 09 Myrtle Beech Cool Temperate rainforest (EVC31)
  • 34 Manna Gum Floodplain Riparian Woodland (EVC 56)
  • 11 Manna Gum Riparian Forest - Central Highlands (EVC 18)
  • 36 Scented Paperbark Riparian Thicket – Central Highlands (EVC 59)
  • 12 Manna Gum Riparian Forest - Dandenongs (EVC 18)
  • 39 Sedge Wetland Complex (EVC 136)
  • 13 Manna Gum Riparian Forest - Upper Yarra (EVC 18)
  • 46 Silvertop Ash Heathy Dry Forest (EVC 20)
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