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Matricaria discoidea

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(Redirected from Pineapple weed) Species of flowering plant

Matricaria discoidea
Pineappleweed
Conservation status

Secure  (NatureServe)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Matricaria
Species: M. discoidea
Binomial name
Matricaria discoidea
DC.
Synonyms

Artemisia matricarioides auct.
Chamomilla suaveolens (Pursh) Rydb.
Lepidanthus suaveolens (Pursh) Nutt.
Lepidotheca suaveolens (Pursh) Nutt.
Matricaria matricarioides auct.
Matricaria suaveolens (Pursh) Buchenau
Santolina suaveolens Pursh
Tanacetum suaveolens (Pursh) Hook.
Source: NRCS, GRIN

Matricaria discoidea, commonly known as pineappleweed, wild chamomile, disc mayweed, and rayless mayweed, is an annual plant native to North America and introduced to Eurasia where it grows as a common herb of fields, gardens, and roadsides. It is in the daisy family Asteraceae. The flowers exude a chamomile/pineapple aroma when crushed. They are edible and have been used in salads (although they may become bitter by the time the plant blooms) and to make herbal tea.

Description

The flower head or pseudanthium is cone-shaped, composed of densely packed yellowish-green corollas, and lacking ray-florets. The leaves are pinnately dissected and sweet-scented when crushed. The plant grows 2 to 16 in (5.1 to 40.6 cm) high. Flowerheads are produced from March to September.

Distribution and habitat

The plant grows well in disturbed areas, especially those with poor, compacted soil. It can be seen blooming on footpaths, roadsides, and similar places in spring and early summer. It is native to North America, from central Alaska south to California and Texas and east to Nova Scotia and Newfoundland. It is also native to Greenland. Though other sources, like the Flora of North America, assert that it is only native to the Pacific Northwest and while noting that NatureServe incorrectly list it as introduced to North America.

Alongside a variety of other plant species, wild chamomile seeds are known to be inadvertently transported to new areas through soil carried by cars; A study by Dunmail J. Hodkinson and Ken Thompson found that M. discoidea is one of the most common plants to be transported in this way.

It has been introduced widely in the northern hemisphere and is common and naturalized throughout Britain where it is one of the fastest-spreading plants in the 20th century.

Uses

The greens can be washed and eaten, and both the flowers and the whole plant can be steeped to make tea, described as "excellent" by one field guide.

Gallery

  • The pinnately dissected leaves are sweet-scented when crushed The pinnately dissected leaves are sweet-scented when crushed

References

  1. NRCS. "Matricaria discoidea". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 2008-06-14.
  2. Germplasm Resources Information Network (GRIN) (2005-09-07). "Taxon: Matricaria discoidea DC". Taxonomy for Plants. USDA, ARS, National Genetic Resources Program, National Germplasm Resources Laboratory, Beltsville, Maryland. Archived from the original on 2008-04-22. Retrieved 2008-06-14.
  3. BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
  4. "Pineapple Mayweed". NatureGate.
  5. ^ "Matricaria discoidea DC". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 21 February 2024.
  6. Brouillet, Luc (5 November 2020). "Matricaria discoidea - FNA". Flora of North America. Retrieved 21 February 2024.
  7. Hodkinson, Dunmail J.; Thompson, Ken (1997). "Plant Dispersal: The Role of Man". Journal of Applied Ecology. 34 (6): 1484–1496. doi:10.2307/2405264. ISSN 0021-8901. JSTOR 2405264.
  8. P.A. Stroh; T. A. Humphrey; R.J. Burkmar; O.L. Pescott; D.B. Roy; K.J. Walker (eds.). "Matricaria discoidea DC". BSBI Online Plant Atlas 2020. Botanical Society of Britain and Ireland. Retrieved 21 February 2024.
  9. The Wildlife Trusts, "Pineappleweed" http://www.wildlifetrusts.org/species/pineappleweed
  10. Nyerges, Christopher (2017). Foraging Washington: Finding, Identifying, and Preparing Edible Wild Foods. Guilford, CT: Falcon Guides. ISBN 978-1-4930-2534-3. OCLC 965922681.
  11. Benoliel, Doug (2011). Northwest Foraging: The Classic Guide to Edible Plants of the Pacific Northwest (Rev. and updated ed.). Seattle, WA: Skipstone. p. 123. ISBN 978-1-59485-366-1. OCLC 668195076.

External links

Taxon identifiers
Matricaria discoidea
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