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{{Taxobox
| color = lightgreen
| name = Yarrow
| image = Achillea millefolium.jpg
| image_width = 200px
| image_caption = [[Yarrow]] (''[[Achillea millefolium]]'')
| regnum = [[Plant]]ae
| divisio = [[Flowering plant|Magnoliophyta]]
| classis = [[Magnoliopsida]]
| ordo = [[Asterales]]
| familia = [[Asteraceae]]
| genus = '''''Achillea'''''
| genus_authority = [[Carolus Linnaeus|L.]]
| subdivision_ranks = Species
| subdivision =
''many, [[#List of species|see text]]''
}}

'''''Achillea''''' is a genus of about 85 [[flowering plant]]s, in the family [[Asteraceae]], commonly referred to as ''yarrow''. They occur in [[Europe]] and temperate areas of [[Asia]]. A few grow in [[North America]]. These plants typically have frilly, hairy, aromatic [[Leaf|leaves]].

These plants show large, flat clusters of small [[flower]]s at the top of the stem. These flowers can be white, yellow, orange, pink or red. A number of species are popular [[garden]] plants.

The genus was named for the [[Greek mythology|Greek mythological]] character [[Achilles]]. According to the [[Iliad]], Achilles' soldiers used yarrow to treat wounds [http://www.killerplants.com/whats-in-a-name/20020802.asp], hence some of its common names such as allheal and bloodwort.

''Achillea'' species are used as food plants by the [[larva]]e of some [[Lepidoptera]] species - see [[list of Lepidoptera which feed on Achillea]].

== Species ==
*''Achillea abrotanoides''
*''[[Achillea ageratifolia]]'' : Balkan Yarrow, Greek Yarrow
*''Achillea ageratum'' : Sweet Yarrow
*''Achillea albicaulis''
*''Achillea aleppica''
*''Achillea ambrosiaca''
*''Achillea armenorum''
*''Achillea asplenifolia''
*''Achillea atrata''
*''Achillea aucheri''
*''Achillea barbeyana''
*''Achillea barrelieri''
[[Image:Achillea asplenifolia1.jpg|thumb|right|250px|''Achillea asplenifolia'']]
*''Achillea biebersteinii''
*''Achillea brachyphylla''
*''Achillea bulgarica''
*''Achillea cartilaginea'' : Silver Spray Yarrow
*''Achillea chrysocoma''
*''[[Achillea clavennae]]'' : Silvery Yarrow
*''Achillea clusiana''
*''Achillea clypeolata''
*''Achillea coarctata ''
*''Achillea collina''
*''Achillea cretica''
*''Achillea crithmifolia''
*''Achillea cucullata''
*Achillea decolorans = synonym of ''Achillea ageratum'' Garden Mace
[[Image:Achillea clavenae0.jpg|thumb|right|250px|Silvery Yarrow (''Achillea clavenae'')]]
*''Achillea depressa''
*''Achillea distans'' : Alps Yarrow
*''Achillea erba-rotta'' : Musk Milfoil
*''Achillea falcata''
*''[[Achillea filipendulina]]'' Fernleaf Yarrow
*''Achillea fraasii'' : Filigree Yarrow
*''Achillea fragantissima''
*''Achillea lewisii''
*''Achillea goniocephala''
*''Achillea grandiflora''
*''Achillea griseovirens''
*''Achillea gypsicola''
*''Achillea holosericea''
[[Image:Gemeine Schafgarbe, violett - gross.jpg|thumb|right|250px|Purple yarrow]]
[[Image:Gemeine Schafgarbe, weiss - gross.jpg|thumb|right|250px|White yarrow]]
[[Image:Achilleamillefolium2web.jpg|thumb|right|250px|Yarrow (''Achillea millefolium'')]]
*''Achillea horanszkyi''
*''Achillea huteri''
*''Achillea kelleri''
*''Achillea kotschyi''
*''Achillea lanulosa'' : White Yarrow
*''Achillea ligustica'' : Ligurian Yarrow
*''Achillea lingulata''
*''Achillea macrophylla'' : Broad-leaved Yarrow
*''Achillea membranacea''
*''Achillea micrantha''
*[[Achillea millefolium]] : Milfoil, Yarrow, Allheal, Thousand-leaf, Bloodwort, Carpenter's Grass, Cammock, Green arrow, Gordoloba, Plumajillo, Sneezeweed, Nosebleed, Green Adder's Mouth, Soldier's Woundwort, Dog Daisy, Old-man's-pepper
**''Achillea millefolium alpicola'' : Common Yarrow
**''Achillea millefolium arenicola'' : Common Yarrow
**''Achillea millefolium borealis'' : Boreal Yarrow, Northern Yarrow
**''Achillea millefolium californica'' : California Yarrow, Western Yarrow
**''Achillea millefolium gigantea'' : Giant Yarrow
**''Achillea millefolium litoralis'' : Coast Yarrow
**''Achillea millefolium megacephala'' : Largehead Yarrow
**''Achillea millefolium millefolium'' : Common Yarrow
**''Achillea millefolium nigrescens'' : Common Yarrow
**''Achillea mille
folium occidentalis'' : Western Yarrow
**''Achillea millefolium pacifica'' : Pacific Yarrow
**''Achillea millefolium puberula'' : Common Yarrow
*Achillea mongolica = synonym of ''Achillea sibirica''
*''Achillea monocephala''
*''Achillea moschata'' : Musk Milfoil, Forest Lady's Herb
*''Achillea nana'' : Dwarf Alpine Yarrow
*''Achillea nobilis'' : Noble Yarrow, Creamy Yarrow
*''Achillea ochroleuca''
*''Achillea odorata''
*''Achillea oxyloba''
*''Achillea oxyodonta''
*''Achillea pannonica''
*''Achillea phrygia''
*''[[Achillea ptarmica]]'' : Sneezewort, Sneezeweed, Seezewort Yarrow, Bachelor's Buttons
[[Image:Achillea ageratum corimbo.jpg|thumb|right|250px|Sweet Yarrow (''Achillea ageratum'')]]
*''Achillea pyrenaica''
*''Achillea roseo-alba''
*''Achillea rupestris''
*''Achillea santolina''
*''Achillea schischkinii''
*''Achillea sedelmeyeriana''
*''Achillea setacea''
*''Achillea sibirica'' : Siberian Yarrow
*''Achillea sintenisii''
*''Achillea sipikorensis''
*Achillea sudetica = synonym of ''Achillea millefolium alpestris''
*''Achillea sulpherea''
*''Achillea talagonica''
*''Achillea taygetea''
[[Image:Achillea filipendula detalle corimbo.jpg|thumb|right|250px|Fernleaf Yarrow (''Achillea filipendula'')]]
*Achillea tenuifolia = synonym of ''Achillea millefolium millefolium''
*''[[Achillea tomentosa]]'' : Woolly Yarrow
*''Achillea tzsonii''
*''Achillea umbellata''
*''Achillea vermicularis''
*''Achillea vermiculata''
*''Achillea virescens''
*''Achillea wilhelmsii''
*''Achillea wilsoniana'' : Wilson's Yarrow

== References ==
* [http://flower-jpeg.blogspot.com/2007/02/achillea.html Achillea] by Flower-JPEG - Photos and info about it
* [http://www.killerplants.com/whats-in-a-name/20020802.asp Why was yarrow named for Achilles? (killerplants.com)]

[[Category:Asteraceae]]
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