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{{SPlantbox
{{SPlantbox
|familia=Adiantaceae
|familia=Adiantaceae
|genus=Adiantum
|genus=Adiantum
|species=formosum
|species=formosum
|common_name=Australian maidenhair, Black stem, Giant maidenhair, Plumed maidenhair
|common_name=Australian maidenhair, Black stem, Giant maidenhair, Plumed maidenhair
|name_ref=Flora - A Gardener's Encyclopedia
|name_ref=Flora - A Gardener's Encyclopedia
|usda_ref=Flora - A Gardener's Encyclopedia
|usda_ref=Flora - A Gardener's Encyclopedia
|max_zone=11
|max_zone=11
|image=Upload.png
|image=Maidenhair fern - Dee Why.jpg
|image_width=240
|image_width=240
|image_caption=a young Maidenhair Fern
}}
}}
'''''Adiantum formosum''''', known as the '''Giant Maidenhair''' or '''Black Stem Maidenhair''' is a [[fern]] found in [[Australia]] and [[New Zealand]]. It was one of the many species authored by Scottish botanist [[Robert Brown (botanist)|Robert Brown]], appearing in his 1810 work ''[[Prodromus Florae Novae Hollandiae et Insulae Van Diemen]]''.<ref name=apni>{{APNI | name =Adiantum formosum R.Br. | id = 22194}}</ref> Its species name is the [[Latin]] adjective ''formosus'' "handsome" or "beautiful".<ref name=enc>{{cite book |author=Eliot RW, Jones DL, Blake T |title=Encyclopaedia of Australian Plants Suitable for Cultivation: Vol. 2|year=1985|pages=158–59 |publisher=Lothian Press |location=Port Melbourne |isbn=0-85091-143-5}}</ref>
| name = Adiantum formosum
| common_names = <!--- if multiple, list all, if none, leave blank -->
''Adiantum formosum'' is an attractive plant, with fronds up to 120 cm (48 in) high.<ref name=plantnet>{{cite web |title=''Adiantum formosum''|work= PlantNET - NSW Flora Online|url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Adiantum~formosum|accessdate=2010-07-20}}</ref> The rhizome of this species is unusually deep, up to 60 cm (24 in) below into the earth. The stems are black and can reach 90 cm (36 in) in length, while the fronds or blades are triangular with rectangular segments. The last segment of the frond is irregular and asymmetrical, on a short stem. This ''maidenhair'' fern can grow to 2 metres (7 ft) tall.<ref>Cundall. P., (2008) Native Plants:The definitive guide to Australian plants, Global Book Publishing Lane Cove, N.S.W, page 278, ISBN 978 174048 027 7</ref> The smallest segments of the fronds are the pinnules, which are wedge-shaped, rectangular or trapezoid. They have 1–10 sori along the margins underneath.<ref>{{cite web |title=''Adiantum formosum''|work= Flora of Australia Online|url=http://www.anbg.gov.au/abrs/online-resources/flora/stddisplay.xsql?pnid=4556}}</ref>
''Adiantum formosum'' is found in Queensland, and New South Wales, and into Victoria, where it is less common. It also occurs in New Zealand. It is often seen growing in moist areas or along streams usually on alluvial soils, ''Adiantum formosum'' is generally found in [[rainforest]] or in nearby open [[eucalyptus]] forest, where it may form a large colony.<ref name=plantnet/>
| origin = <!--- Mexico, S America, S Europe, garden, etc -->
Easy to grow in cultivation, ''Adiantum formosum'' makes a good subject for container gardening. It appears to go dormant in cooler months and grow rapidly during the summer.<ref name=enc/> A smaller, variegated form is commercially available and cultivated.
| poisonous = <!--- indicate parts of plants which are known/thought to be poisonous -->
| lifespan = perennial
| exposure = part to full shade
| water = ample
| features = foliage
| hardiness = <!--- frost sensitive, hardy, 5[[Celsius|°C]], etc -->
| sunset_zones = n/a
| color = IndianRed
| image = Upload.png <!--- Freesia.jpg -->
| image_width = 240px <!--- leave as 240px if horizontal orientation photo, or change to 180px if vertical -->
| regnum = Plantae
| divisio = Pteridophyta
| classis = Pteridopsida
{{inc|
{{inc|
==Cultivation==
==Cultivation==
===Propagation===
===Propagation===
===Pests and diseases===
===Pests and diseases===
==Varieties==
==Varieties==
==Gallery==
==Gallery==
<gallery perrow=5>
File:Adiantum formosum.jpg
Image:Upload.png| photo 1
Image:Upload.png| photo 1
Image:Upload.png| photo 2
Image:Upload.png| photo 2
==References==
==References==
<references/>
<!--- xxxxx *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381 -->
<!--- xxxxx *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381 -->
<!--- xxxxx *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432 -->
<!--- xxxxx *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432 -->
<!--- xxxxx *Sunset National Garden Book. Sunset Books, Inc., 1997. ISBN 0376038608 -->
==External links==
==External links==
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