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'''''Matricaria perforata''''' is a species of [[Mayweed]].
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The taxonomy of the genus [[Mayweed|Matricaria]] has been the subject of some controversy, with many revisions in recent years. The [[Flora Europaea]] uses ''Matricaria perforata'' for this species. Synonyms/other scientific names include ''Tripleurospermum perforatum'' (Mérat) Lainz, ''Tripleurospermum maritimum'' subsp. ''inodorum'', ''Tripleurospermum inodorum''.
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Common name(s): scentless mayweed, scentless chamomile, wild chamomile, mayweed, false chamomile, German chamomile, [[Baldr]]'s Brow
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Origin Eurasia, North Africa
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Considered an invasive weed in North America
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{{Inc|
 
{{Inc|
Matricaria chamomilla, Linn. (Chamomilla officinalis, Koch). Wild Chamomile. Fig. 2333. Glabrous erect much- branched annual: lvs. 2-3-pinnate, with segms. short and very narrow-linear, giving the lf. a finely dissected appearance: heads rather large (nearly 1 in. across), on terminal peduncles, with 10-20 truncate white rays; bracts of involucre of about equal length, the edges scarious; receptacle without scales, elongating and hollow as anthesis advances: achene with 3-5 faint ribs and no border at top. Fields, Eu. and N. Asia; run wild in E. U. S.—Very similar in appearance to Anthemis Cotula (Fig. 219), but lacks the scales between the central florets and has a different odor. The name chamomile, or sometimes spelled camomile, is applied both in Matricaria and Anthemis.
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Matricaria chamomilla, Linn. (Chamomilla officinalis, Koch). Wild Chamomile. Glabrous erect much- branched annual: lvs. 2-3-pinnate, with segms. short and very narrow-linear, giving the lf. a finely dissected appearance: heads rather large (nearly 1 in. across), on terminal peduncles, with 10-20 truncate white rays; bracts of involucre of about equal length, the edges scarious; receptacle without scales, elongating and hollow as anthesis advances: achene with 3-5 faint ribs and no border at top. Fields, Eu. and N. Asia; run wild in E. U. S.—Very similar in appearance to Anthemis Cotula, but lacks the scales between the central florets and has a different odor. The name chamomile, or sometimes spelled camomile, is applied both in Matricaria and Anthemis.
 
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{{Inc|
 
{{Inc|
Matricaria inodora, Linn. (Chrysanthemum inodorum, Linn. Pyrethrum inodorum, Smith). Nearly or quite glabrous, branchy, diffuse annual, 1-2 ft. tall, from Eu. and Asia: lvs. many, sessile, 2-3-pinnately divided or dissected: heads 1½in. across, terminating the branches, with many acute white rays: achenes inversely pyramidal, with 3 conspicuous ribs. Not uncommon in fields eastward. Var. plenissima, Hort. (var. ligulosa, var. multiplex, M. grandiflora, Hort. not Fenzl), ia a common garden plant with very double clear white large heads. It is floriferous, and the fls. are fine for cutting. G.C. II. 12:753.—It often persists and blooms the second year. Foliage little or not at all scented.
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Matricaria inodora, Linn. (Chrysanthemum inodorum, Linn. Pyrethrum inodorum, Smith). Nearly or quite glabrous, branchy, diffuse annual, 1-2 ft. tall, from Eu. and Asia: lvs. many, sessile, 2-3-pinnately divided or dissected: heads 1½in. across, terminating the branches, with many acute white rays: achenes inversely pyramidal, with 3 conspicuous ribs. Not uncommon in fields eastward. Var. plenissima, Hort. (var. ligulosa, var. multiplex, M. grandiflora, Hort. not Fenzl), ia a common garden plant with very double clear white large heads. It is floriferous, and the fls. are fine for cutting.—It often persists and blooms the second year. Foliage little or not at all scented.
 
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{{Taxobox | color = lightgreen
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==Cultivation==
| name = ''Matricaria perforata''
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| image = Tripleurospermum perforatum 20041012 2572.jpg|
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| image_width = 240px
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===Propagation===
| regnum = [[Plant]]ae
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| divisio = [[Flowering plant|Magnoliophyta]]
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| classis = [[Magnoliopsida]]
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| ordo = [[Asterales]]
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| familia = [[Asteraceae]]
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| genus = ''[[Matricaria]]''
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| species = '''''M. perforata'''''
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| binomial = ''Matricaria perforata''
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}}
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'''''Matricaria perforata''''' is a species of [[Mayweed]].
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===Pests and diseases===
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The taxonomy of the genus [[Mayweed|Matricaria]] has been the subject of some controversy, with many revisions in recent years. The [[Flora Europaea]] uses ''Matricaria perforata'' for this species. Synonyms/other scientific names include ''Tripleurospermum perforatum'' (Mérat) Lainz, ''Tripleurospermum maritimum'' subsp. ''inodorum'', ''Tripleurospermum inodorum''.
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Common name(s): scentless mayweed, scentless chamomile, wild chamomile, mayweed, false chamomile, German chamomile, [[Baldr]]'s Brow
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==Varieties==
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Origin Eurasia, North Africa
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Considered an invasive weed in North America
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==Gallery==
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==Mythology==
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<gallery perrow=5>
In [[Sweden]] and [[Norway]], it is called ''[[Balder]]'s brow'', but in [[Iceland]], it is the close relative [[Sea Mayweed]] (''Matricaria maritima'') that carries this name<ref>[http://linnaeus.nrm.se/flora/di/astera/tripl/tripper.html Den virtuella floran (in Swedish)]</ref>. In ''[[Gylfaginning]]'', [[Snorri Sturluson]] explains that the name Balder's brow comes from the plants' whiteness:
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:''Annarr sonr Óðins er Baldr, ok er frá honum gott at segja. Hann er svá fagr álitum ok bjartr svá at lýsir af honum, ok eitt gras er svá hvítt at jafnat er til Baldrs brár. Þat er allra grasa hvítast, ok þar eptir máttu marka fegrð hans bæði á hár ok á líki. Hann er vitrastr ása ok fegrst talaðr ok líknsamastr. En sú náttúra fylgir honum at engi má haldask dómr hans. Hann býr þar sem heita Breiðablik, þat er á himni. Í þeim stað má ekki vera óhreint[.]''<ref>[http://www.hi.is/~eybjorn/gg/ggupar17.html An online edition of the Old Norse text.]</ref>
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</gallery>
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:The second son of [[Odin]] is Baldr, and good things are to be said of him. He is best, and all praise him; he is so fair of feature, and so bright, that light shines from him. A certain herb is so white that it is likened to Baldr's brow; of all grasses it is whitest, and by it thou mayest judge his fairness, both in hair and in body. He is the wisest of the [[Æsir]], and the fairest-spoken and most gracious; and that quality attends him, that none may gainsay his judgments. He dwells in the place called [[Breidablik]], which is in heaven; in that place may nothing unclean be[.]<ref>[http://www.northvegr.org/lore/prose/033036.php ''Brodeur's translation'' in English.]</ref>
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==References and footnotes==
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==References==
{{reflist}}
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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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==See also==
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==External links==
* [[List of Asteraceae genera]]
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*{{wplink}}
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{{asteraceae-stub}}
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{{stub}}
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