Matricaria perforata
| Tripleurospermum inodorum | |
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| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Tribe: | Anthemideae |
| Genus: | Tripleurospermum |
| Species: | T. inodorum |
| Binomial name | |
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Tripleurospermum inodorum (L.) Sch.Bip. |
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| Synonyms | |
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Tripleurospermum inodorum, common names scentless false mayweed,scentless mayweed, scentless chamomile, wild chamomile, mayweed, false chamomile, and Baldr's brow, is the type species of Tripleurospermum. This plant is native to Eurasia and North Africa and is considered an invasive weed in North America.
Historically included the genus Matricaria, Tripleurospermum inodorum 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.
Pollen is collected by solitary bees.
In Sweden and Norway, it is called Baldr's brow, but in Iceland, it is the close relative Sea Mayweed (Matricaria maritima) that carries this name. In Gylfaginning, Snorri Sturluson explains that the name Balder's brow comes from the plants' whiteness:
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Wikipedia