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Acaena (view source)

Revision as of 05:10, 20 June 2009

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__NOTOC__{{Plantbox
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| name = ''Acaena''
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| common_names =    <!--- if multiple, list all, if none, leave blank -->
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| growth_habit = ?  <!--- tree, shrub, herbaceous, vine, etc -->
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| high = ?  <!--- 1m (3 ft) -->
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| wide =    <!--- 65cm (25 inches) -->
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| origin = ?  <!--- Mexico, S America, S Europe, garden, etc -->
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| poisonous =    <!--- indicate parts of plants which are known/thought to be poisonous -->
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| lifespan =    <!--- perennial, annual, etc -->
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| exposure = ?  <!--- full sun, part-sun, semi-shade, shade, indoors, bright filtered (you may list more than 1) -->
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| water = ?  <!--- frequent, regular, moderate, drought tolerant, let dry then soak -->
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| features =    <!--- flowers, fragrance, fruit, naturalizes, invasive -->
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| hardiness =    <!--- frost sensitive, hardy, 5°C (40°F), etc -->
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| bloom =    <!--- seasons which the plant blooms, if it is grown for its flowers -->
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| usda_zones = ?  <!--- eg. 8-11 -->
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| sunset_zones =    <!--- eg. 8, 9, 12-24, not available -->
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| color = IndianRed
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| image = Acaena novae-zelandiae1.jpg
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| image_width = 240px    <!--- leave as 240px if horizontal orientation photo, or change to 180px if vertical -->
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| image_caption = ''[[Acaena novae-zelandiae]]'' foliage and various fruiting stages
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| regnum = Plantae
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| divisio = Magnoliophyta
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| classis = Magnoliopsida
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| ordo = Rosales
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| familia = Rosaceae
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| tribus = Sanguisorbeae
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| genus = Acaena
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}}
 
{{Inc|
 
{{Inc|
 
Acaena (from Greek word signifying thorn). Rosaceae. New Zealand Bur. Trailing, more or less evergreen plants used in rockwork and as ground cover under trees and between other plants.
 
Acaena (from Greek word signifying thorn). Rosaceae. New Zealand Bur. Trailing, more or less evergreen plants used in rockwork and as ground cover under trees and between other plants.
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About 40 species of sub-shrubs or herbs of the southern hemisphere, allied to Agrimonia and Sanguisorba: lvs. unequally pinnate, alternate, the lfts. toothed or cut: fls. small, crowded in erect terminal spikes or heads; petals none; calyx 5-7-lobed, usually armed with spines; stamens 1-10, or even more: fr. an achene, 1 or 2 being enclosed in the hardened calyx.
 
About 40 species of sub-shrubs or herbs of the southern hemisphere, allied to Agrimonia and Sanguisorba: lvs. unequally pinnate, alternate, the lfts. toothed or cut: fls. small, crowded in erect terminal spikes or heads; petals none; calyx 5-7-lobed, usually armed with spines; stamens 1-10, or even more: fr. an achene, 1 or 2 being enclosed in the hardened calyx.
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Acaenas are little grown in this country, but are prized in England as groundwork for dwarf spring-flowering bulbs, as trilliums; also useful in protecting native orchids and bog plants. Propagation is by cuttings, divisions and seeds.
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Acaenas are little grown in this country, but are prized in England as groundwork for dwarf spring-flowering bulbs, as trilliums; also useful in protecting native orchids and bog plants.{{SCH}}
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}}
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}}
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==Cultivation==
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{{Taxobox
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{{edit-cult}}<!--- Type cultivation info below this line, then delete this entire line -->
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| color = lightgreen
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| name = ''Acaena''
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| image = Acaena novae-zelandiae1.jpg
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| image_width = 250px
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| image_caption = ''[[Acaena novae-zelandiae]]'' foliage and various fruiting stages
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| regnum = [[Plant]]ae
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| divisio = [[Flowering plant|Magnoliophyta]]
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| classis = [[Magnoliopsida]]
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| ordo = [[Rosales]]
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| familia = [[Rosaceae]]
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| subfamilia = [[Rosoideae]]
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| tribus = [[Sanguisorbeae]]
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| subtribus= [[Sanguisorbinae]]
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| genus = '''''Acaena'''''
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| genus_authority = [[Carolus Linnaeus|L.]]
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| subdivision_ranks = [[Species]]
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| subdivision =
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See text.
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}}
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'''''Acaena''''' is a genus of about 100 species of [[perennial plant|perennial]] [[herb]]s and [[subshrub]]s in the [[Rosaceae]], native mainly to the [[Southern Hemisphere]], notably [[New Zealand]], [[Australia]] and [[South America]], but with a few species extending into the [[Northern Hemisphere]], north to [[Hawaii]] (''A. exigua'') and [[California]] (''A. pinnatifida'').
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===Propagation===
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Propagation is by cuttings, divisions and seeds.{{SCH}}
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The [[leaf|leaves]] are alternate, 4-15 cm long, and pinnate or nearly so, with 7-21 leaflets. The [[flower]]s are produced in a tight globose inflorescence 1-2 cm diameter, with no petals. The [[fruit]] is also a dense ball of many [[seed]]s; in many (but not all) species the seeds bear a barbed arrowhead point, the seedhead forming a [[burr (fruit)|burr]] which attaches itself to [[animal]] [[fur]] or [[feather]]s for dispersal.
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===Pests and diseases===
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{{edit-pests}}<!--- Type pest/disease info below this line, then delete this entire line -->
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;Selected species  
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==Species==
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;Selected species{{wp}}
 
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===Invasive species===
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==Gallery==
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Some species have been introduced accidentally to other areas, attached to [[sheep]]'s [[wool]], and have become [[invasive species]]. ''A. novae-zelandiae'', the [[bidibid]] from New Zealand, is the most commonly encountered species in [[Great Britain]], where it is often abundant on coastal sand dunes, crowding out native vegetation and creating an often painful nuisance with the barbed burrs. In California, ''A. pallida'', from New Zealand and southeast Australia, is similarly a problem species.
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{{photo-sources}}<!-- remove this line if there are already 3 or more photos in the gallery  -->
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<gallery>
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Image:Upload.png| photo 1
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Image:Upload.png| photo 2
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Image:Upload.png| photo 3
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</gallery>
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==References==
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*[[Standard Cyclopedia of Horticulture]], by L. H. Bailey, MacMillan Co., 1963
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<!--- xxxxx  *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381  -->
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<!--- xxxxx  *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432  -->
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<!--- xxxxx  *Sunset National Garden Book. Sunset Books, Inc., 1997. ISBN 0376038608  -->
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==External links==
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*{{wplink}}
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{{stub}}
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[[Category:Categorize]]
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[[Category:Rosaceae]]
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<!--  in order to add all the proper categories, go to http://www.plants.am/wiki/Plant_Categories and copy/paste the contents of the page here, and then follow the easy instructions!    -->
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[[Category:Pantropical flora]]
 
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