Doodia aspera
{{Short description|Species of fern}}
{{Use dmy dates|date=December 2019}}
{{Use Australian English|date=October 2011}}
{{Speciesbox
| name = Prickly rasp fern
| image = Doodea_aspera_-_Eastwood.jpg
| image_caption = Growing at Eastwood, Australia
| taxon = Doodia aspera
| authority = R.Br.
| synonyms =
{{Species list
|Blechnum neohollandicum|Christenh.
|Woodwardia aspera|(R.Br.) Fée
}}
}}
Doodia aspera, commonly known as prickly rasp fern, is a widespread and common plant, growing in eastern Australia. Often seen in rainforest margins or eucalyptus forest in Victoria, New South Wales and Queensland, it is a terrestrial fern with reddish new growth.
Taxonomy
Doodia aspera was one of the many species first described by the botanist Robert Brown in his 1810 work Prodromus Florae Novae Hollandiae et Insulae Van Diemen, and it still bears its original name.{{APNI | name =Doodia aspera R.Br. | id = 16542}} The genus is named for Samuel Doody, curator of the Chelsea Physic Garden, and the species name aspera is the feminine form of the Latin adjective asper "rough", referring to the rachis and stipe.{{cite web|url= http://www.anbg.gov.au/gnp/interns-2006/doodia-aspera.html| title= Growing Native Plants: Doodia aspera |year=2006 | author=Irwin Lovadi|work=Australian National Botanic Gardens|publisher=Australian Government|location=Canberra, ACT}}
Description
Prickly rasp fern grows as fronds which rise vertically from the black scaled rhizome. These fronds are usually {{convert|20|to|45|cm|in|abbr=on}} long. The frond segments have dentate (toothed) margins, and measure around {{convert|6|cm|in|abbr=on}} long, and in a zig-zag pattern up the stem. Both the fronds and stipe are covered in small bumps, giving them a rough texture.{{NSW Flora Online|genus=Doodia|species=aspera|author= Peter G. Wilson}} When young, the fronds are a pinkish colour which changes to green with maturity.{{cite book |author1=Fairley, Alan |author2=Moore, Philip |title=Native Plants of the Sydney District:An Identification Guide |year=2000 |edition= 2nd|publisher=Kangaroo Press |pages=46–47|location=Kenthurst, NSW |isbn=0-7318-1031-7}}
Distribution and habitat
Doodia aspera is found all along eastern New South Wales, and into Victoria and Queensland. It is particularly common in the Blue Mountains west of Sydney. It grows on sandstone and igneous (granite and basalt) substrates, in sand- or gravelly soils{{cite journal|author1=Benson, Doug|author2=McDougall, Lyn|year=1993|title=Ecology of Sydney Plant Species Part 1: Ferns, fern-allies, cycads, conifers and dicotyledon families Acanthaceae to Asclepiadaceae|journal=Cunninghamia|volume=3|issue=2|pages=257–422|url=https://www.rbgsyd.nsw.gov.au/RoyalBotanicGarden/media/RBG/Science/Cunninghamia/Volume%203%20-%201993/Volume-3%282%29-1993-Ecology_of_Sydney_Plant_Species_Part_1-257-422.pdf|access-date=2 March 2016|archive-url=https://web.archive.org/web/20160313141238/https://www.rbgsyd.nsw.gov.au/RoyalBotanicGarden/media/RBG/Science/Cunninghamia/Volume%203%20-%201993/Volume-3(2)-1993-Ecology_of_Sydney_Plant_Species_Part_1-257-422.pdf|archive-date=13 March 2016|url-status=dead}} It is also found on Norfolk Island.
In tall open forest in the Sydney region, it is an understory ground cover in damp areas underneath such trees as Sydney blue gum (Eucalyptus saligna), mountain gum (E. deanei), river peppermint (E. elata) and forest red gum (E. tereticornis). It is also found in rainforest and dry open forest. Doodia aspera can grow as scattered plants or as dense colonies.
Ecology
Cultivation
Readily adaptable to cultivation, Doodia aspera grows in shade or sun with adequate moisture on acidic soils with some organic content. Drainage needs to be sufficient to prevent waterlogging. The pinkish to reddish new growth is an attractive feature. The fern is readily propagated by collecting and germinating the spores, or dividing the rhizomes.
References
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Category:Flora of New South Wales
Category:Flora of Victoria (state)